charging tablet loses % while playing

[OvidiuHiei]

Ok so the tablet is brand new, first it had the " problem" where it wouldnt say it had more than 1% even though it could stay for 30m at 1%, then i let it charge overnight while it was off and it went to 100%
now i put it to charge again and while playing games instead of going % up it goes down? its like it cant keep up with the charging while playing a game, is it normal or should i go to the store to get it replaced?
Also should a tablet be charged while its turned OFF?

and now i put it to charge for like 5 hours and it was only at 15%..

 

[ansm]

Ok so the tablet is brand new, first it had the " problem" where it wouldnt say it had more than 1% even though it could stay for 30m at 1%, then i let it charge overnight while it was off and it went to 100%
now i put it to charge again and while playing games instead of going % up it goes down? its like it cant keep up with the charging while playing a game, is it normal or should i go to the store to get it replaced?

First part can be battery calibration problem. You can charge it to 100% an then discharge to 0% and device going off several times. Sometimes it helps. Many devices can recalibrate themselves.

Slow charging of or slow discharging while playing games - normal.

Slow charging of untoched device can be charger/cable problem.

Also should a tablet be charged while its turned OFF?

Some devices can charge while off, some can't. It depends on device.

 

[OvidiuHiei]

after i did a factory reset is now charging normally..wtf i dont understand anything x.x
is it possible that tablets bug if you let them hit 1% battery and then they have trouble charging all the way up?

 

[Rukbat]

Yes, you should NEVER discharge a lithium battery past 40%.

 

[ManiacJoe]

Yes, you should NEVER discharge a lithium battery past 40%.

The 40% guide applies only to long-term storage.

For normal usage, all you need to do is stop use before you actually get to zero.