irrational battery behaviour

[allanoptical]

I have a Vodafone/Lenovo Smart Tab II

At present the battery and charger are behaving irrationaly.

I have tried several chargers and leads and also reset the operating system to the factory default.

At present my battery refuses to charge, for example after 2 hours connected to the charger the battery state went from 9% to 7%. When left for 4 hours it went from 7% to 14%

This is of course making the tabelt useless

Can anyhting be done about this

[drey_p]

Hi there

It sounds like the battery needs to be replaced. You can arrange a repair by calling 191 from your handset or by taking the device into your local Vodafone Store. 

[hrym]

I agre with drey_p.  Have you allowed the battery to go flat?  This is bad news for lithium-based cells and will considerably shorten their life.   They have no memory effect and it's actually much better to keep them topped up.

[allanoptical]

Thanks for replies, I had supected this might be the case.

In general I try to avoid the battery getting very low and usually put the device on rechargewhen the inducator looks to be less than about 1/3 full. In about 18 months use only got 4 or 5 warnings from the device to recharge so I think I have been treating the battery correctly.

[hrym]

It certainly sounds as though you have.  As long as you switched off and recharged as soon as you got the warning, you should be fine.