best solar panels for home

Lithium (LiFePO4) Battery Runtime Calculator

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Use our lithium battery runtime (life) calculator to find out how long your lithium (LiFePO4, Lipo, Lithium Iron Phosphate) battery will last running a load. Calculator Assumption How To Use Lithium Battery Runtime Calculator? 1- Enter the battery capacity and select its unit. The unit types are amp-hours (Ah), and Miliamps-hours (mAh). Choose according to your battery capacity label. 2- Enter the battery voltage. It’ll be mentioned on the specs sheet of your battery. For example, 6v, 12v, 24, 48v etc. 3- Optional: Enter battery state of charge SoC: (If left empty the calculator will assume a 100% charged battery). Battery state of charge is the level of charge of an electric battery relative to its capacity. For example, enter 80 for an 80% charged battery. 4- Is your output load connected through an inverter? If you’re using a solar battery and running an AC load, it should be connected through an inverter. 5- Enter the total output load and select its unit. The units are, watts (W), and kilowatts (kW = 1000 watts). How To Calculate Lithium Battery Runtime? AdvertisementsI’ve seen many ways to calculate the battery runtime online. Which are easy but least accurate. So I’m gonna share the most accurate and difficult method. Formula #1 (Best For Large Capacity Batteries): Battery runtime = (Battery capacity Wh × battery discharge efficiency × inverter efficiency, if running AC load) ÷ (Output load in watts). Formula #2 (Best For Small mAh Batteries): Battery runtime = (Battery capacity Ah/mAh × battery discharge efficiency) ÷ (Output load in amps/milliamps). Formula 1: Example Let’s suppose, Formula 2: Example Let’s take the iPhone 14 pro max as an example, Lithium Battery Maximum Discharge Rate? Rechargeable batteries are designed to be charged/discharged at a limited current rate to increase the battery lifespan or life cycles. Lithium batteries can be discharged at 1C (for example, 100 amps for a 100Ah battery). Discharging your battery at a higher rate than what is recommended will increase the heat in battery cells. As a result, your battery will drain quickly. For instance, if you’re running a 100A load on a 100Ah battery, it will last 35-40 minutes instead of 1 hour. How Many Hours Does A Lithium Battery Last? Calculating how many hours your battery will last while running a load is not an easy task. There are so many factors to consider for an accurate value.

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Lead Acid Battery Life Calculator: (SLA, AGM, Gel)

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Use our lead-acid battery life calculator to find out how long a Sealed Lead Acid (SLA), AGM, Gel, and Deep cycle lead-acid battery will last running a load. Calculator Assumptions How To Use This Calculator? Step 1: Enter the battery capacity and select the unit type. The unit types are amp-hours (Ah), and milliamp-hours (mAh). Step 2: Enter your battery voltage (V). Is this a 6v, 12v, 24, or 48v battery? Step 3: Optional: Enter the battery state of charge (SoC). SoC is defined as how much your battery is charged relative to its capacity. (The default value is 100%, meaning a fully charged battery). Step 4: Optional: Enter the battery depth of discharge limit (DoD). (The default value is 50% because most lead-acid batteries have a DoD limit of 50% in order to maintain their health). Check your battery specs sheet for a more accurate number. Step 5: Is your load connected through an inverter? Select accordingly. (The inverter is the device that converts the DC current into AC current so we can run our household appliances) Step 6: Enter the total output load and select the unit type. The unit types are Watts (W), and kilowatts (kW). Note: 1 kW = 1000 watts. Lead Acid Battery Life (Runtime) Formula Formula: Lead-acid Battery life = (Battery capacity Wh × (85%) × inverter efficiency (90%), if running AC load) ÷ (Output load in watts).\ ExampleAdvertisements AdvertisementsLet’s suppose, Why none of The Above Methods Are 100% Accurate? I won’t go in-depth about the discharging mechanism of a lead-acid battery. Instead, I’m going to share the key points to remember when discharging your lead-acid battery. 1. The Faster You Discharge A Lead Acid Battery The Less Energy You Get (C-Rating) The recommended discharge rate (C-rating) for lead acid batteries is between 0.2C (5h) to 0.05C (20h). Look at the manufacturer’s specs sheet to be sure. Formula to calculate the c-rating: C-rating (hour) = 1 ÷ C   Discharging your battery at a higher rate will increase the temperature in battery cells which as a result will cause power losses. e.g, a 100ah lead-acid battery with a C-rating of 0.05C (20 hours) will last about 20-25 minutes instead of 1 hour while running a 50 amp load (remember the 50% DoD limit). 2. Battery Age Count A lead-acid battery will lose its 20% storage capacity after 500-900 cycles (Look at the manufacturer’s specs sheet for an accurate value). So if you have an old battery it’ll store less power. As a result, it will deplete more quickly than the estimated time. 3. Batteries Don’t Discharge Evenly Your battery will be discharged at a different rate depending on how heavy the output load is connected. Which makes it really hard to guess the exact runtime of your battery.

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Lithium Battery Watt Hour Calculator: (mAh / Ah ↔ Wh)

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Use our lithium (LiFePO4) battery watt-hour calculator to convert the battery capacity from amp hours (Ah), or milliamp hours (mAh) to watt hours (Wh). How To Use This Calculator? 1 – Enter the battery capacity and select the unit type. The unit types are amp-hours (Ah), and milliamp-hours (mAh). For example, if you have a 100ah battery, enter 100 and select the unit type to Ah. 2 – Enter the battery voltage. Is this a 6v, 12v, 24v, or a 48v battery? It should be mentioned on the specs sheet of your battery or on the battery itself. 3 – Optional: Enter the number of batteries if you’re using multiple batteries. (Default value will be 1) How Do You Calculate Lithium Battery Watt-Hours? Multiply the battery capacity in amp-hours (Ah) by the battery voltage to calculate watt hours (Wh). Formula: Battery capacity Watt-hours = Battery capacity Ah × Battery voltage Example Let’s say you have a 12v 200ah lithium battery. Lithium Battery Amp-Hours To Watt Hour Calculation AdvertisementsHere’s a chart about different capacity (Ah) lithium batteries into watt hours @ 12v, 24, and 48v. Battery Ah watt-hours @ 12v watt-hours @ 24v watt-hours @ 48v 20Ah 240 Wh 480 Wh 960 Wh 50Ah 600 Wh 1200 Wh 2400 Wh 70Ah 840 Wh 1680 Wh 3360 Wh 100Ah 1200 Wh 2400 Wh 4800 Wh 120Ah 1440 Wh 2880 Wh 5760 Wh 150Ah 1800 Wh 3600 Wh 7200 Wh 200Ah 2400 Wh 4800 Wh 9600 Wh 300Ah 3600 Wh 7200 Wh 14,400 Wh 400Ah 4800 Wh 9600 Wh 19,200 Wh Why Calculate Battery Watt-Hours? Energy is equal to amp-hours multiplied by volts. Converting battery amp hours to watt-hours will give an idea of how much actual energy your battery can store or deliver. For example, A 36v 12.8ah battery can store or deliver more energy than a 12v 30ah battery. The benefit of converting battery amp hours to watt-hours:

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Battery Runtime Calculator: How Long Does Battery Last?

Blogs, Solar Calculators /

How long will your battery last? find out with our easy-to-use battery runtime calculator. Calculator Assumptions Limitations Of This Calculator How To Use Our Battery Runtime Calculator? 1. Enter battery capacity in amp-hours (Ah): If the battery capacity is mentioned in watt-hours (Wh), Divide the watt-hours by battery voltage (V) to find out the battery capacity in Ah. 2. Enter your battery voltage (V): Do you have a 12v, 24, or 48v battery? For a 12v battery, ENTER 12. 3. Select your battery type: For lead acid, sealed, flooded, AGM, and Gel batteries select “Lead-acid” and for LiFePO4, LiPo, and Li-ion battery types select “Lithium”. 4. Enter your battery’s state of charge (SoC): SoC of a battery refers to the amount of charge it has relative to its total capacity. A fully charged battery will have 100% SoC. 5. Enter your battery’s recommended depth of discharge (DoD) limit: Battery depth of discharge (DoD) measures the used capacity of your battery from its total capacity. Lead-acid, AGM, sealed, flooded, and Gel batteries should not be discharged below 50%, while only lithium (LiFePO4, LiPo, and Li-ion) batteries can be safely depleted to 100%. Ask your manufacturer or have a look on at your battery’s specs sheet for a more accurate value. 6. Is your load connected through an inverter? Select yes, if you’re using an inverter to run the AC appliances. Or select no, if the appliance is directly connected to the battery without an inverter (usually not recommended). 7. Enter total output load in watts: If your appliance has an output load mentioned in amps, convert it into watts by multiplying the amps by the given volts of the appliance. 2 Ways To Calculate Battery Runtime Ready for calculation? Let’s dive in! I’ll share 2 methods to estimate battery life from basic (least accurate) to advanced (most accurate). Formula 1 Formula: Battery capacity in Ah ÷ Output amps (A) Or, Battery runtime = Battery capacity in watt-hours (Wh) ÷ Total Output in watts Accuracy: Lowest Dividing the battery capacity (in amp-hours – Ah, or milliamp-hours – mAh) by the output load (in amps – A, or milliamps – mAh) is the least accurate way to calculate the battery runtime. Because it doesn’t take into account for battery’s discharge efficiency rate, recommended depth of discharge, and state of charge. Mostly, the battery capacities are mentioned in amp-hours (Ah) but our appliances are in watts. Which makes it confusing in the first place. You can convert the battery capacity in watt-hours or the appliance input capacity into watt-hours to make it work. Battery capacity in watt-hours = Battery Ah × Battery voltage AdvertisementsOutput load in load in amps = Load in watts ÷ volts Example Let’s say you have: To calculate 50ah battery lifetime using this formula, divide 50ah by 10a.50ah ÷ 10a = 5 hrs According to this formula, a 50-ah battery will run a 10-amp load for 5 hours. Formula 2 Formula: Battery runtime = (Battery Ah × Battery volts × discharge efficiency × DoD limit × SoC × inverter efficiency) ÷ load Accuracy: Highest This formula takes into account for battery’s discharge efficiency rate, recommended depth of discharge, and state of charge. Based on directscience.com data: Example Let’s continue with the previous example and find out the most accurate runtime estimate. Let’s say you have: Now let’s put this info into our 2nd formula. (50ah × 12v × 85% × 50% × 100% × 90%) ÷ 120 watt (229.5) ÷ 120 watt = 1.9 hours Turns out, in actuality a 50ah battery will run a 10A load for about 1.9 hours. Why None Of These Methods Guarantee 100% Accuracy? Battery runtime formulas aren’t fully accurate due to the complexity of battery discharge, as there are other factors that can impact discharge time. Which are… 1. Batteries Discharge Unevenly If you discharge a battery too quickly, it won’t provide as much energy as the label claims, known as Peukert’s law. This is because more energy turns into heat instead of powering devices when discharged quickly. The effect of Peukert’s law on Lead-acid vs. Lithium: Lead acid batteries lose energy faster when discharged quickly, while lithium batteries can be discharged at up to 50% of their capacity without losing power. Here’s an example of how discharge time affects the usable capacity of a 100ah lead acid battery. Usable 100ah lead acid battery capacity Hours of discharge 100ah 20 hours 90ah 10 hours 87ah 8 hours 82ah 6 hours 80ah 5 hours 70ah 3 hours 60ah 2 hours 50ah 1 hour 2. Battery Life Cycles Matter Batteries can only be charged and discharged for a limited number of times, which is called the life cycle. Lead-acid batteries last for a few hundred cycles if they are maintained properly. Lithium batteries can last for thousands of cycles. But as batteries are used and charged more, they hold less charge capacity. After about 500 cycles, a lead-acid battery will lose about 20% of its capacity, while a lithium battery will 20% of its capacity after about 2000 cycles. Check your battery’s data sheet for more accurate numbers. 3. Effect Of Temperature On Batteries Performance Temperature affects how well your battery works. Usually, batteries work best when it’s between 68°F and 77°F (20°C to 25°C). A higher or lower temperature (than what’s recommended) will affect the battery’s performance. A rule of thumb is “an increase or decrease in temperature to 77ºF or 25º C can reduce battery performance by 50%”. To get the most out of your battery, keep it at the right temperature by using a cooling system or putting it in a spot where it won’t get too hot or too cold. How Long Does A 12v Battery Last? Here’s a chart on how long 12v different amp-hour (Ah) batteries will last running a 10-watt load. Battery Size (Ah) Runtime (Lead-acid) Runtime (Lithium) 6ah 3 hrs 6 hrs 7ah 3 hrs 7 hrs 12ah 6 hrs 12 hrs 18ah 8 hrs 19 hrs 20ah 9 hrs 21 hrs 36ah 17 hrs 37 hrs 50ah 23 hrs 52 hrs 60ah 28 hrs 62 hrs 70ah 32 hrs 73 hrs 80ah 37 hrs

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Solar Panel Size Calculator – Charge Your Battery In Desired Hours

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Use our solar panel size calculator to find out what size solar panel you need to charge your battery in desired time. Simply enter the battery specifications, including Ah, volts, and battery type. Also the charge controller type and desired charge time in peak sun hours into our calculator to get your result Calculator Assumptions How To Use Our Solar Panel Size Calculator? 1. Enter battery Capacity in amp-hours (Ah): For a 100ah battery, enter 100. If the battery capacity is mentioned in watt-hours (Wh), divide Wh by the battery’s voltage (v). 2. Enter battery volts (V): Is this a 12, 24, or 48-volt battery? 3. Select battery type: Is this a lead-acid, AGM, or lithium-ion (LiFePO4) battery? 4. Enter battery depth of discharge (DoD): Battery DoD This is the percentage of the battery discharged relative to the total battery capacity. For half discharged battery you ENTER 50, and if the battery is fully discharged which you can achieve on a lithium battery, ENTER 100. 5. Select charge controller type: Are you using a PWM or MPPT charge controller to charge the battery?  6. Enter desired charge time (in peak sun hours): How fast would you like to charge your battery or how many peak sun hours your location receives? For Example Let’s suppose, you have: Result: You need about a 120-watt solar panel to fully charge a 12v 50ah lithium (LiFePO4) battery from 100% depth of discharge in 6 peak sun hours. 6 Steps To Calculate The Perfect Solar Panel Size For BatteryAdvertisements Follow these 6 steps to calculate the estimated required solar panel size to recharge your battery in the desired time frame. Steps Batteries are quite complex, making it nearly impossible to calculate the exact solar panel size needed to recharge them in a desired timeframe. However, I have covered the most impactful real-world factors in these steps. 1- Multiply the battery amp-hours (ah) by battery volts to convert the battery capacity into watt-hours (Wh). Let’s suppose you have a 12v 50ah battery. 2- Multiply the battery watt-hours by the battery depth of discharge limit. Lead-acid, AGM, and gel batteries come with a depth of discharge limit of 50%, and lithium batteries with 100% DoD. Let’s say you have a 12v 50ah lead-acid battery. 3- Divide the battery capacity after DoD by the battery’s charge efficiency rate (lithium: 99%; Lead-acid: 85%). Advertisements4- Divide the battery capacity value (after charge adding efficiency factor) by the desired number of charge peak sun hours. Let’s suppose you want to recharge your battery in 5 peak sun hours. 5- Divide the solar power required in peak sun hour by the charge controller efficiency (PWM: 80%; MPPT 98%). Let’s suppose you’re using a PWM charge controller. 6- Add 20% to the solar power required after the controller to cover up the solar panel inefficiency.

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Solar Battery Charge Time Calculator (12v, 24v, 48v)

Blogs, Solar Calculators /

Use our solar battery charge time calculator to find out how long will it take to charge a battery with solar panels. How To Use Our Solar Battery Charge Time Calculator? To use the calculator, follow these steps: 1. Enter the total solar system size in watts: If you have multiple solar panels connected together, add their rated wattage and enter the total value in watts into the calculator. 2. Enter the battery capacity in amp-hours (Ah): If the battery capacity is given in watt-hours, divide the watt-hours by the battery voltage to find out the amp-hours. For example, enter 50 for a 50Ah battery. 3. Enter the battery voltage (V): Is this a 12, 24, or 48-volt battery? Enter 12 for a 12V battery. 4. Select your battery type from the options provided. 5. Enter the battery depth of discharge (DoD): Battery DoD indicates how much of the battery capacity is discharged relative to its total capacity. For example, enter 50 for a battery that is half discharged, and enter 100 for a battery that is fully discharged (which is achievable only with lithium batteries). 6. Select the charge controller type: Which type of charge controller are you using? PWM or MPPT? 7. find out the estimated battery charge time. Note: The calculator assumes the following efficiencies: 1. Battery charge efficiency – Lead-acid — 85%, lithium — 95% 2. Charge controller efficiency – PWM — 80%, MPPT — 95% 3. Solar panel output efficiency – 80% How To Calculate Solar Panel Charge Time? Dividing the battery amp-hours (Ah) by the solar panel’s output amps (Ah ÷ charging amps) is the most inaccurate way to calculate the battery charge time. Instead, use this formula: Formula Solar battery charge time = (Battery Ah × Battery volts × Battery DoD) ÷ (Solar panel size (W) × charge controller efficiency × battery charge efficiency × 0.8) This method takes into account most of the real-world factors that affect the battery’s charge time. Or follow these steps: Steps Let’s say you have a 12v 100ah lead acid battery with 50% Depth of discharge, a 100-watt solar panel, and an MPPT charge controller. 1. Multiply 12 by 100 to convert the battery capacity into watt-hours.12 × 100 = 1200 watt-hours 2. Multiple the battery capacity in watt-hours by its depth of discharge.1200 × 50% = 600 watt-hours 3. Multiply the solar panel-rated watts by the charge controller efficiency. PWM — 80%, MPPT — 95%.100 × 95% = 95 watts 4. Take into account for battery charge efficiency rate by multiplying the battery charge efficiency by the solar panel’s output (W) after the charge controller. AdvertisementsBased on directscience.com data, on average: 95 × 85% = 80 watts 5. Take into account the solar panel’s output efficiency. Solar panels are designed to produce their rated wattage under ideal conditions, but in real-world conditions, on average, you’d receive about 80% rated output from your solar panel.80 × 80% = 65 watts 6. Now divide the battery capacity after DoD by the solar panel output (after taking into account the losses).600 ÷ 65 = 9.2 hours Turns out, a 100-watt solar panel will take about 9 peak sun hours to fully charge a 12v 100ah lead acid battery from 50% depth of discharge. How Fast Should You Charge Your Battery? Deep cycle or solar batteries are designed to charge and discharge at a specific rate, which is referred to as the c-rating. It’s important to note the recommended charge time for different types of batteries: Charging your battery at a higher rate than what’s recommended can increase the battery’s internal cell temperature, which will ultimately decrease the battery’s overall health and charging efficiency. Note: Refer to your battery’s data sheet to find its c-rating or maximum charge rate. Why none of The Above Methods Guarantee 100% Accuracy? Calculating the accurate charge time for a battery is a challenging task because there are numerous real-world factors that can impact it. Some of these factors include the state of charge of the battery, the absorption stage for lead acid and lithium batteries, solar panel output efficiency, and PWM charge controller efficiency. 1. Lead acid battery charge efficiency will depend on its state of charge (SoC). The below chart illustrates the lead acid battery charge efficiency based on its state of charge. lead acid battery charge efficiency will decrease drastically after 70-80% charge, that’s because of the absorption stage. 2. Absorption stage for lead acid and lithium battery: During the absorption stage, which is a phase in the battery charging process, a fixed amount of time is used to charge the battery, regardless of the amount of input power For lead acid batteries, this stage typically lasts between 2-3 hours and helps the battery reach its total capacity from 80% charge. The absorption stage is important for the health of the battery, as it helps to balance the battery cells and prevent damage. However, lithium batteries do not require an absorption stage, although charge controllers may perform a brief 20-30 minute absorption charge to balance the battery cells. 3. Solar panel output efficiency will depend on many factors, such as the tilt angle of the panel, weather conditions (e.g., sunny or cloudy), and ambient temperature. For example, if the panel is not tilted towards the sun, it may not receive optimal sunlight, resulting in lower efficiency. Similarly, if it’s cloudy or there is low light, the panel’s output will decrease. Moreover, solar panels become less efficient at higher temperatures, so if the ambient temperature is high, the panel’s output may be reduced. 4. The efficiency of a PWM charge controller can be affected by different factors, such as temperature and the voltage difference between the solar panels and the battery. A PWM charge controller can only lower the high voltage to match the battery voltage for safe charging but cannot increase the amps. As we know power (watts) = Amps × Volts. In contrast, an MPPT charge controller can reduce the voltage and boost the amps to compensate for any losses. High temperatures can cause the controller’s efficiency to decrease, while a greater voltage

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Solar Panel Amps Calculator (Watts to Amps)

Blogs, Solar Calculators /

Solar Panel Amps Calculator Use our solar panel amps calculator to calculate the solar panel amps or convert solar panel watts to amps. How To Use This Calculator? Some Key Points Before You Leave We usually measure or convert the watts into amps of solar panels to figure out how much current (amps) is being stored in the battery. Or we measure the amperage of the solar panel output, to select the wire size from solar panels to the charge controller. So if your goal is to figure out how many amps are being stored in the battery then enter the voltage of your battery (for example 12 for a 12v battery). 200-Watt Solar Panel How Many Amps? How Do I Calculate Solar Panel Amps? To calculate the amps from watts use this formula. Solar Panel Amps (12v, 24v, 48v) Solar Panel Size (Watts) Amps @12v Amps @24v Amps @48v 5 watt 0.42 amps 0.21 amps 0.10 amps 20 watt 1.67 amps 0.83 amps 0.42 amps 30 watt 2.50 amps 1.25 amps 0.63 amps 40 watt 3.33 amps 1.67 amps 0.83 amps 50 watt 4.17 amps 2.08 amps 1.04 amps 100 watt 8.33 amps 4.17 amps 2.08 amps 120 watt 10.0 amps 5.00 amps 2.50 amps 150 watt 12.5 amps 6.25 amps 3.13 amps 170 watt 14.1 amps 12.0 amps 6.0 amps 200 watt 16.6 amps 8.3 amps 4.15 amps 250 watt 20.8 amps 10.4 amps 5.20 amps 300 watt 25.0 amps 12.5 amps 6.25 amps 350 watt 29.1 amps 14.5 amps 7.25 amps 400 watt 33.3 amps 16.6 amps 8.3 amps 450 watt 37.5 amps 18.7 amps 9.38 amps 500 watt 41.6 amps 20.8 amps 10.4 amps 550 watt 45.8 amps 22.9 amps 11.4 amps 600 watt 50.0 amps 25.0 amps 12.5 amps 700 watt 58.3 amps 29.1 amps 14.5 amps 800 watt 62.5 amps 31.2 amps 16.6 amps 900 watt 66.6 amps 33.3 amps 18.7 amps 1000 watt 83.3 amps 41.6 amps 20.8 amps 1200 watt 100.0 amps 50.0 amps 25.0 amps 1400 watt 116.6 amps 58.3 amps 29.1 amps 1500 watt 125.0 amps 62.5 amps 31.2 amps 1600 watt 133.3 amps 66.6 amps 33.3 amps 1800 watt 150.0 amps 75.0 amps 37.5 amps 2000 watt 166.6 amps 83.3 amps 41.6 amps 3000 watt 250.0 amps 125.0 amps 62.5 amps 4000 watt 333.3 amps 166.6 amps 83.3 amps Table: solar panel Watts to amps conversion Summary

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Battery Amp hours To Watts (Ah to Watts) Calculator

Blogs, Solar Calculators /

Use our battery amp-hour (Ah) to watts calculator to find out the battery capacity in watt-hours. How To Use This Calculator? How To Calculate Watts In A Battery? Watts is the unit that represents the total number of power. So to calculate watts from Ah use this formula. Watts = Amps*volts Multiplying the value of amps with volts will give you the number of watts. For Example Let’s suppose you have a 12v 300Ah battery. 12v 300Ah battery is equal to 3600 watts or 3.6kW. How Many Watts Is A 12-Volt Battery – Chart Here’s a chart with the conversion of different size 12v batteries in watts. 12V Battery Size (Ah) Equal to Watts (W) 7Ah 84 watts 12Ah 144 watts 33Ah 396 watts 50Ah 600 watts 60Ah 720 watts 70Ah 840 watts 100Ah 1200 watts 110Ah 1320 watts 120Ah 1440 watts 150Ah 1800 watts 160Ah 1920 watts 170Ah 2040 watts 200Ah 2400 watts 220Ah 2640 watts 250Ah 3000 watts 300Ah 3600 watts 400Ah 4800 watts Table: How many watts are in a 12v battery Summary Why Calculate Watts In A 12v Battery? Battery capacities are rated as Amp-hours (Ah). But most of our appliances are rated as watts. So calculating Ah to watts will give you an idea of the total capacity of your battery in watts so you can determine how long will your battery last on running any appliances. Also what appliances running your battery will fall in the safe zone because of battery c-ratings (Charge and discharge rate of battery). To better understand this, read the article Maximum Charging Current & Voltage For 12v Battery. Also converting your 12v battery in watts will give you an idea of how many watts it can store so you can pick the right size solar panel in order to recharge your battery. How Many Watts Is A 12V Car Battery Usually, 12v car batteries have a capacity of 60Ah so let’s assume that you have a 12v 60Ah car battery. 12 × 60 = 720 watts. So a 12v car battery is equal to 720 watts. You can calculate the value by yourself with the formula that I have mentioned above or by using a calculator. How many watt-hours in a car battery 12v 100Ah car battery has 1200 watt-hours (Wh). How Many Watts Are In 12 Volts To calculate how many watts are 12 volts, you would need the value of amps, and multiplying the amps by 12 will give you watts (Watts = Amps × 12). For example, 12v 33Ah how many watts? 12 × 33 = 396 watts For More Head to roopsolar blogs and get related posts

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How to Calculate Solar Panel Battery and Inverter?

Blogs, Solar Panel /

The solar calculation for home Step 1:- Home electrical load calculation? Step 2:- Inverter Selection? Step 3:-Battery Selection? Step 4:-Solar Panel Selection? Step 1:- Home electrical load calculation? 4 Led Light    = 4×25 = 100W 2 fan              = 2×80 = 160W 1 Tube Light = 1×40 = 40W 1 Led TV        = 1×50 = 50W Total Load = 350W Step 2:- Inverter Battery House Load: – 350W Consider – 500W However, the Recommendation is 800-1000W best AC load =350w Battery DC Volt = 12V DC current required P = V x I I=P/V 350W AC Load …DC current required (I) =29.17=30A Step 3:- Battery Size Selection in AH Formula:-W x H/V Where: – W= Total load (350w) H= Backup time in hours (8) V= Battery voltage (12v) =350X8/12=233AH Battery Standard: – 250AH Battery Select: – 250AH Battery Charging Current We will calculate the charging current for the 250AH battery. As we know the charging current should be 10% of the AH rating of the Battery. Therefore Charging current for 250AH Battery                        = 250X10%                        = 25A Step 4:-Solar Panel Selection? Solar panel Current =Battery charging current + Home load current                                    = 25+30                                    = 55 A Solar plate power Formula = V X I                 = 12 X 55                 = 660W 340W Home load (AC) = 660W Solar panel required DC The 660w Solar panel below is available in the market. No. of solar plates =Total solar plates watt/single panel watts =660/180 = 3.66 Approx. (4) No. of solar plates:-4 panels (4x 180w) 350w home electrical load Inverter: – 800-1000w Battery: – 250Ah Solar panels: – 4 X 180w

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How to Buy Solar Panel on Loan?

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The consumption of electricity in homes has been increasing over the years. It varies from season to season. If a household gets an electricity bill of Rs. 2000 during the rainy season, it can easily go up to Rs. 5000 during hot summer days, which is expensive for a common man. The family also does not want to run ACs at free will and is more cautious when running an AC at home because he is scared of the high electricity bill. In such a situation, a homeowner starts looking for alternatives to reduce his electricity bill. One such super-effective alternative is the application of solar energy and generating free power. But people often face a few challenges when installing a solar system. These are i)No loan financing available for solar system installation ii)Availing Net Meters for the solar system. Can we get a loan on the solar system? Buying a solar system is just like buying any other product like a car. Come to think of it, the purchase and ownership of mobile phones, cars, or homes have become convenient these days due to the easy availability of loans and EMI options. Everyone knows how to buy mobile phones, cars, and homes on EMI but do you know how to buy a solar system on loan? Anyone holding a credit card can easily avail of the EMI option on a solar system, but do debit cardholders have this facility? About 80 crores Indians are bank cardholders, out of which nearly 30 crores people own Pradhan Mantri Jan Dhan Yojana debit card (ATM card). Only 50 lakh people i.e. approximately 1% have credit cards that allow them to avail EMI option on the installation of solar systems.  There are two ways of availing of loans on a solar system. Option 1: Buy “Solar Panel” on EMI with Debit Card A few banks such as SBI, HDFC Bank, Axis Bank, ICICI Bank, Kotak Mahindra Bank, and Federal Bank have already made it easier to avail loan facility by allowing to check the Loan Eligibility Criteria to buy solar panels. A potential customer has to send an SMS like DCEMI<SPACE><last digits of Debit Card Number> to 56767, in case he has an account with HDFC bank. One should use the same mobile number to send this text message, as is registered with the bank. You will get a reply with your loan status on the same number. If you will be eligible, you will get a message regarding your eligibility amount in the message itself. The chance of loan approval is just 0.02% and the cardholder’s approval for a loan depends on the bank’s internal database/ criteria. Similarly, you can try for other banks like: – SBI Bank – SMS DCEMI to 567676 from your registered mobile number  – ICICI Bank – SMS DCEMI<SPACE><last 4 digits of Debit Card number> to 5676766 – Axis Bank – SMS DCEMI<SPACE><last 4 digits of Debit Card number> to 5676782 – Kotak Bank – SMS DCEMI<SPACE><last 4 digits of Debit Card number> to 5676788 – Federal Bank – SMS DC<SPACE>EMI to 9008915353 or give a missed call to 7812900900  Option 2: Way to Get Home Improvement Loan from the Bank A few banks like the State Bank of India grant loans of up to Rs.1 lakh for home improvement with an interest rate of nearly 8%. The loan term is 4-5 years or more. A customer can avail of such loans for installing the solar system.  What does a customer need to avail of a loan for Home Improvement? STEP 1. He needs to visit the nearest bank branch of his area and find out about the bank’s policy on the Home Improvement loan. STEP 2. The next step is to contact any dealer or a distributor of a private solar company like Loom Solar in your area. They will give a quotation of the size of the solar system that the customer needs to install on their own letterhead. This letter is needed for availing of the loan. STEP 3. Now the bank will transfer nearly 80% of the total price of the solar system to the private company’s reseller’s bank account. It might take around 5-7 days for the whole process. STEP 4. Then the reseller of the private company will install the solar system at the customer’s premises. When the customer hands over the NOC to the reseller, the bank transfers the balance 20% to the reseller’s bank account. List of Banks in India for Rooftop Solar Finance In India, many banking and non-banking services offer easy solar finance for rooftop solar installation. Below is the list of banks that provide homes with solar loans / easy EMI, 1. HDFC Bank Rooftop Solar Finance HDFC is the largest private sector bank of India in terms of its assets and market capitalization. It is the third-largest company listed by the Indian Stock Exchanges. HDFC Bank Limited offers banking and financial services to its customers and has its headquarters in Mumbai, Maharashtra. Find out more information Read our Blog:- https://roopsolar.com/how-to-get-home-with-solar-loan-from-hdfc-bank/ 2. SBI Rooftop Solar Finance The Government of India has set an ambitious target of installation of Grid Connected Rooftop Solar Photovoltaic (GC-RSVP) projects with capacity aggregating 40 GW out of the total incremental target of 175 GW of Renewable Energy capacity by 2022.  Read our Blog:- https://roopsolar.com/how-to-get-home-with-solar-loan-from-sbi/ Conclusion The most common questions in installing a solar system are what will be the total cost, can I get a loan or EMI option and where can I get the net meters? You can contact Faridabad’s Loom Solar Company has installed grid-connected solar systems on loans and net meters at many customers’ home premises.

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