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Battery capacity tells you how much energy a battery can store and deliver over time. It's usually expressed in: To calculate how much energy a battery holds in watt-hours, use: If your battery capacity is in mAh (milliamps), convert it to Ah first: You have a 12V battery rated at 100Ah. So it stores 1200 watt-hours of energy.
Given: Step 1: Apply the formula to calculate energy capacity (Wh): This means the battery can store 240 watt-hours of energy. Knowing the energy capacity is essential when deciding how long the battery will power devices, systems, or equipment before needing a recharge.
The energy capacity is calculated by multiplying the charge capacity by the nominal voltage of the battery. While charge capacity tells you how much charge a battery can hold, energy capacity indicates how much usable power the battery can deliver. 2. Can I calculate energy capacity for any type of battery?
To calculate how much energy a battery holds in watt-hours, use: If your battery capacity is in mAh (milliamps), convert it to Ah first: You have a 12V battery rated at 100Ah. So it stores 1200 watt-hours of energy. If you're powering a 100-watt device: