• ironhydroxide@sh.itjust.works
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    9 months ago

    It’s because you can get more when measuring in mA than you can in A.

    5000 mAh means you can get 5000 hours out when pulling at 1mA. 5 Ah means you can get 5 hours when pulling at 1A.

    You’d think these are commutative, but battery chemistry doesn’t work that way. The harder you load, the less actual power you can get. So a battery that can provide 1mA for 5000 hours can’t necessarily provide 1A for 5 hours.