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I bought a 5600mAh external battery for my iPhone 5. It doesn't have an indicator of charge percentage (don't get smart, yes I know, iPhone shouldn't be mixed with non genuine Apple merchandise and all that jazz :)). How long should I charge it for on my wall outlet? And, how can I know how much is it charged, without buying additional equipment to measure that?
Vladimir Despotovic
Posted 2016-11-18T14:15:57.987
Reputation: 219
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If it's a lithium-based battery chemistry, it should already have all the safety and management circuitry it needs to be safe to use. Even cheap NiMH chargers monitor the charging process and react to changing charging conditions such as changes to current or voltage.
– a CVn – 2016-11-18T14:24:29.337Ok, but why was it hot when it was plugged into the ground electric plug (in the wall), and it is not getting hot when I plug it into laptop, on laptop's usb port? – Vladimir Despotovic – 2016-11-18T14:35:54.420
1You would be wise to just plug it in to an electrical socket anyway. You're just draining your laptop battery to charge another battery, and a wall outlet would likely be faster too. – Kaizerwolf – 2016-11-18T15:49:00.383
I will edit my question to specify that I only want to charge on wall, not on laptop. Thanks for the advice. Do you know how long would I have to charge it (since this is my original question)? – Vladimir Despotovic – 2016-11-18T18:19:24.883