[Q] Alcatel Evo7 Battery problem and rewiring

Hello I new to the forum but I often visit the webpage.
I write this post to ask for help to try to repair the battery of my tablet. The problem is the battery life, when it was new lasted up to 4 hours now not even 10 min.
I open my tablet to check the battery and found what I think the problem. The battery itself has a circuit board. I check the voltages on the pines of the batteries (two in parallel) and mark 3.5-3.47 volts but on the conector at the end of the circuit board mark 0.1-0.2 volts.(I would show images but as I'm a new user I can not do it.)
I´m assuming that the battery circuit is failing. Now I was thinking bypass the battery circuit and directly connect the batteries to the tablet.
My question is whether it is safe to do so, the circuit must have its function but I'm not sure what it is?
Buy a new battery would cost almost half of what it cost me the tablet itself, so it is the last option.
Any recommendation or comment is appreciated.

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