The Apple iPhone 5s was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, or 64 GB / Silver, Gold, and Space Gray.

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Battery capacity terrible after repair - stuck at 100 mAh

I did a bit of an overhaul on my iPhone 5s, replacing the lighting adapter and accompaniment, then a few days later replacing the front facing camera/prix sensor cable and battery.

Upon startup after the second set of replacement parts the phone seemed to work fine, but discharged amazingly quickly. I used Battery Life app to check the capacity and it was showing 100 mAh where it should have been 1550.

Ok I thought, must be defective, I'll put the old one back in for now. I swap them back and lo and behold, the old battery is also showing 100 mAh and discharging super quick.

So: coincidence? Did I cause a short somewhere? Software issue? Is it worth trying another battery replacement or is it just time to retire the phone and upgrade.

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Might be hard to explain but one time I was changing the charging port on a 5s and with the new part the battery life seemed to drain quickly, wouldn't have much of a charge and wouldn't charge. I forgot what app I used but it showed the capacity being at around 100 mAh as well. Tried another part and the same thing happened. Come to find out that close to the battery plug, there are some either some capacitors or resistors and they can be easily broken off when unplugging the battery. If I remember right, there is a capacitor there called the FL 11 that is responsible for the charging and status of the battery life. I accidentally broke it off and it had to be microsoldered back on. Check around the plug and see if you see some very tiny shiny objects close to it and see if one isn't broken off. This might not help but it sounds close to what happened to me.

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Bingo! I broke off three (3!!) of the little buggers. Found two of 'em while looking under the scope, don't know where the third got off to. Wish I would have known about those... sigh.

As usual, I'm my own worst enemy! ;D

Not sure who I could possibly get to repair the darn thing, might have to relegate it to a corded iPod if I can't find a replacement motherboard.

Thanks a bunch for pointing me in the right direction!


Did you solder back the capacitors ? is so how?


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Have you used a multi-meter to measure voltage at battery FPC Connector? See if it is truly sending the 3.8 to 4 volts to battery connection. If it is, then I would try different battery... if it is, it may be charging IC... Repost results and we can go from there... Good Luck!

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Turns out I'm clumsy and I damaged some teeny tiny components. Thanks for the reply!


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Darren will be eternally grateful.
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