1. djnerd2005's Avatar
    Hi all,

    I have replaced the battery and the power connector of my Samsung Galaxy TAB 3 10.1 but now my battery won't charge more than 50%

    Does one of you know how to solve this issue or can tell me what is wrong?

    Hope to hear from you.

    Kind regards

    DJNERD2005

    PS: I have used new original parts for replacement.
    04-18-2018 12:57 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! What happens if you use the tablet normally until it shuts off automatically from low battery, then charge it for at least 12 hours? Does it still stop at 50%?
    04-18-2018 05:28 PM
  3. Beut's Avatar
    This is the common problem of Samsung battery connector. The cables don't make good contact with pins of battery connector on mainboard.
    Here is example of good connection

    Samsung Galaxy Tab 3 10.1 (GT-P5210) won't charge more than 50%-good-contac.jpg

    The second one is example of bad contact

    Samsung Galaxy Tab 3 10.1 (GT-P5210) won't charge more than 50%-bad-contact.jpg

    Don't assume your old battery is bad because new one has the same problem of loose contact.

    The easy way to fix is using Silver conductive glue but you have to use with care. Wipe off any extra glue between terminals with alcohol, otherwise you will have a shorted circuit with symptoms like overheated, low or high battery temperature.
    This is example, no glue between cables

    Samsung Galaxy Tab 3 10.1 (GT-P5210) won't charge more than 50%-silver-conductive-glue.jpg

    This is a sample from Ebay

    https://rover.ebay.com/rover/1/711-5...QAAOSwyXNZ5XVn

    One red ( positive ) or black ( negative ) cable lost contact, you never get full charge or battery capacity drops quickly. Most users always blame the battery is bad due to the quick discharge, but the real problem is from loose battery cables.

    Another possible root cause is the cracked solder joints of battery connector on mainboard.
    This one needs to be resoldered and this one is 99% found on all samsung tablets above 10 inches

    Samsung Galaxy Tab 3 10.1 (GT-P5210) won't charge more than 50%-weak-connector.jpg

    This battery connector was fixed, more solders added to fix cracked solder joints. These cracks you won't see unless using microscope, without experiences, most will see it looks normal.

    Samsung Galaxy Tab 3 10.1 (GT-P5210) won't charge more than 50%-jntc.jpg

    This rework is beyond the scope of most users, you may need the help from a repair shop

    Most Tab 3 need to fix both battery connectors. After that, it can last another 1 or 2 years.
    B. Diddy likes this.
    04-18-2018 09:53 PM
  4. B. Diddy's Avatar
    Darn it, I keep forgetting that this is the kind of thing @Beut specializes in! Thanks for the help.
    04-19-2018 12:11 AM

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