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01 November 2019

Battery rated energy vs. capacity

If you’ve ever been shopping for a battery, chances are you’re familiar with the often confusing task of decoding specifications. One question that commonly comes up during battery specifications comparison is, what’s the difference between rated energy and capacity?

It’s actually very important to distinguish between rated energy and capacity, which are technically specified as watt hour (Wh) and amp hour (Ah), respectively. Despite what some may think, these values are not correlated. So, if a decision is made based on capacity alone, you might not end up with a suitable battery for your application

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