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Battery drain Fairphone 2

Hi !

I have 2 Fairphone 2 and only one battery. When putted in one of the two phones the battery acts normally however in the second phone the battery drains in a few minutes, so the problem obviously cames from the phone.

What could I do to solve this problem ?

Are there different apps on the 2 phones ? Try “adb shell” and use the top command to see if there are processes with high CPU load. Or have a look at settings / battery if some apps cause high battery usage …

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It sounds like the battery contacts may be at issue. After the second phone drains the battery, is it still empty when you insert it back in the first phone?

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Both phones are exactly the same, I did a factory reset on both of them.

The battery was at 35% on the first one, I putted it in the second one and the battery dropped to 18% in a minute. I putted it back again in the first one and the battery came back to 33% and it doesn’t drain abnormally

That means it’s probably not actually draining the battery; it’s just not making good contact. It’s a fairly common issue in FP2s of a certain age. Try giving the gold contacts that contact the battery a clean with some alcohol on a cotton bud; if that doesn’t work,you can try inserting a battery shim to squeeze the battery against the gold contacts.

Here’s an illustration of where the shim’s supposed to go. You can use some tape or just a folded up piece of paper, see if it makes a difference.

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