why is my tablet charging in a weird way

[Android Central Question]

i have the samsung galaxy Tab a 10.1 2019 this morning when i was charging it it said that the charging will take 3 hours but after 3 hours i check the tablet and it said that it will take 16 hours to charge i know that it is not the charger problem because i am using the charger and adapter that came with the tablet so i went to device care in settings but its saying that that the battery is ok but also keeps dying when a 20 percent

 

[Mooncatt]

If that is the 2019 model, then you've presumably been using this tablet for about 2 years. If that is still the factory original USB cable, chances are that has gone bad. I would try a new, or known good, USB cable first.

 

[B. Diddy]

Welcome to Android Central! Have you already tried using different chargers and/or cables? Also, make sure the USB port is clean -- use a can of compressed air to blow it out, and a dry toothbrush to scrub it.

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[J Dubbs]

i have the samsung galaxy Tab a 10.1 2019 this morning when i was charging it it said that the charging will take 3 hours but after 3 hours i check the tablet and it said that it will take 16 hours to charge i know that it is not the charger problem because i am using the charger and adapter that came with the tablet so i went to device care in settings but its saying that that the battery is ok but also keeps dying when a 20 percent

If it's not your cable or charger then its the battery dying unfortunately. Those are classic signs of a battery going bad

It seems a little new for the battery to be going already, but everyone gets slightly different battery life depending on how they use the device. Your last ditch effort would be a factory reset... I've actually had that fix a battery issue on one of my tablets