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Android tablet released in September of 2014. Lenovo Tab S8-50F

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Battery draining & Performance Drop

My Lenovo Tab S8 has been showing a remarkable Battery life draining in Past month. I haven't installed or upgraded any App or Services recently. I tried to save more battery life by disabling some power consumption settings. And I did Erase Cache Partition as well. I was able to work even under Battery Saving Mode without any performance issue. But disabling those settings didn't get any performance increase or Battery life increase. 3D games like Mortal Kombat X mobile was working fine on this Tab. With recent issues, I couldn't Run the game, as it takes minutes to load & movements were more like Slow motion. But Today I found something Wonderful about performance. When it plugs in to Charger, Performance is good as earlier. When I unplug the Charger, again it goes back to Slow motion speed. Please can anyone give me some clue to fix this. I thought it was some Software issue & even thought to Reset the Tab. But now it seems to have only Power consumption issue. This happens even for Offline games as well.

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My lenovo tablet is always on 0 percent battery and as soon as I unplug it, it shuts down. I found it a few days ago and wondered if it would work or not but from this morning till now it is still on 0 percent battery. I have not used it in quite a while but no charges are working.

What shall I do?


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If it works normally when the charger is connected but not when working on the battery only, then it seems as though the battery is starting to fail.

How long have you had the tablet? Even rechargeable batteries have a lifespan.

Here is a link to the service manual for your tablet. Scroll to p.28 to view the necessary pre-requisites and then the procedure to remove / replace the battery.


On p.37 item #2 you will find the Lenovo part numbers for the battery and the other battery accessory parts that may be required when you replace the battery. It may be that you can reuse some of them, except the battery of course, if you are careful when you remove the battery. Just search online using the part number only, e.g. battery part # is 5B19A4657T, to get results for suppliers of the part.

Hopefully this is of some help.

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Dimuthu Karunathilaka будет вечно благодарен.
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