If your website uses Wordpress, be sure to use enable the "code editor" first by clicking on the kabob menu in the upper right of the editor to open the tools menu, then selecting "Code Editor." Then you can paste the HTML widget code where you would like it to appear on your page. Some web page editors use a design or WYSIWYG mode by default, ensure you select "code" or "text" mode before pasting the HTML code to ensure the embedded content renders correctly. The phone battery has a capacity of around 3351mAh.Copy the HTML code and paste it into your web page editor. To calculate its capacity in milliamp hours, you'd do the following: 12.4Wh × 1000 ÷ 3.7V = 3351.35mAh You know it's a 3.7 volt lithium ion battery and you want to find out how many milliamp hours it is. Let's say you're interested in buying a new phone with a 12.4 watt hour battery. Milliamp hours (mAh) = Watt hours (Wh) × 1000 ÷ Volts (V) Example So, to convert watt hours to milliamp hours, you multiply watt hours by 1000 and then divide by volts. (Just like how 1 meter is 1000 millimeters.) □ How to Convert Watt Hours to Milliamp Hours (Wh to mAh)ġ amp hour is equal to 1000 milliamp hours. Time for you to build one with a 150Ah capacity. Turns out his generator's battery has a capacity of around 145Ah. To find out, you'd do the following: 3.5kWh × 1000 ÷ 24V = 145.83Ah You wonder: How many amp hours is his generator's battery? ![]() Let's say your buddy tells you he built a 3.5kWh 24V solar generator. Amp hours (Ah) = Kilowatt hours (kWh) × 1000 ÷ Volts (V)Ĭalculator: Kilowatt Hours to Amp Hours Calculator Example So, to convert kilowatt hours to amp hours, you multiply kilowatt hours by 1000 and then divide by volts. (Just like how 1 kilometer is 1000 meters.) How to Convert Kilowatt Hours to Amp Hours (kWh to Ah)ġ kilowatt hour is equal to 1000 watt hours. In this example, your car battery has a capacity of 1200Wh. To calculate your battery's watt hours, you'd multiply 100Ah × 12V: 100 amp hours (Ah) × 12 volts (V) = 1200 watt hours (Wh) Let's say you have a 100Ah 12V car battery. To convert amp hours to watt hours, you just multiply amp hours by volts: Watt hours (Wh) = Amp hours (Ah) × Volts (V)Ĭalculator: Amp Hours to Watt Hours Calculator Example How to Convert Amp Hours to Watt Hours (Ah to Wh) This means our battery's max charge rate is 83.3 amps, and we can design our solar power system so we don't exceed that limit. This is important to know because many LiFePO4 batteries have a maximum recommended charge rate of 50% of battery capacity in amp hours. The LiFePO4 battery in the example above had a 166.67Ah capacity. Why convert watt hours to amp hours? One reason is because it can help you figure out the max charge rate of your battery, so you can design a solar power system that doesn't go over that limit. After all, things like wire gauge, fuse size, and max charge and discharge rates depend on amperage, not wattage. This is helpful for making an apples to apples comparison of the energy these batteries can deliver.īut, it can be helpful to convert watt hours to amp hours when designing a solar electrical system. Some brands have started reporting their batteries' capacities in watt hours - particularly for solar generators (aka portable power stations). For instance, a 12V LiFePO4 battery actually has a voltage of 13.6V when fully charged. ![]() Note: Most people use a battery's nominal voltage when calculating amp hours or watt hours, but it's worth reminding you that a battery's actual voltage is slightly different and varies based on its remaining capacity. ![]() In this example, your battery has a 166.67Ah capacity. ![]() To do so, you'd divide watt hours by volts: 2000Wh ÷ 12V = 166.67Ah You know it's a 12 volt battery, and you want to calculate its amp hours. Let's say you have a 2000Wh LiFePO4 battery. To convert watt hours to amp hours, simply divide watt hours by volts: Amp hours (Ah) = Watt hours (Wh) ÷ Volts (V) Example How to Convert Watt Hours to Amp Hours (Wh to Ah) Here's a conversion chart converting common watt hour values to amp hours at 12 and 24 volts.
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