Hi,
If it runs OK all the time on the charger but only intermittently OK when on the battery only, I’d suspect that there is a problem with the battery or the battery connection to the systemboard.
Here’s a link to the ifixit Samsung Galaxy Tab 3 10.1 Battery Replacement guide. This shows how to open the tablet to replace the battery so it is also useful to use to view the battery cable connection to the systemboard to ensure that it is securely connected.
If the battery cable connection appears to be OK you may have to replace the battery to find out if the problem is with the battery.
Here’s a link to just one supplier of a replacement battery for your tablet.
It is not a recommendation to use the supplier. It is shown to give an idea of the cost of the part. There are other suppliers online that may suit you better. Just search for Samsung Galaxy Tab 3 10.1 Battery for results
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Samsung galaxy Tab A, i have try a new battry in it but same thing still happend
crwdns2934271:0crwdnd2934271:0 martins.orji crwdne2934271:0
mmy tablet show its 100% charged as soon as i unplug my charger cable..y tablet dies with in 5 minutes it shuts off. i have to keep my tablet plugged in 24/7 or when im using it.even when its 85% charged.. i can turn it back on without being plugged in but only for about 5 minutes then it turns off again
crwdns2934271:0crwdnd2934271:0 Renee Dunlap crwdne2934271:0