this is my first post here!

I have a problem with a custom board I made.

The problem is when I plug the battery nothing happens, no voltage flow, but if I touch the VBAT- with GND of my PCB for a instant, the voltage is OK all the time, the current flow and the battery works properly.

3.7 V battery Li-Ion 1 cell

Any idea are welcome!

Here you can see my battery protection


On the page 18 of the ds:http://www.ti.com/lit/ds/symlink/bq2970.pdf

When the battery is connected for the first time, the discharging circuit might not be enabled. In this case, short the V– pin to the VSS pin. Alternatively, connect the charger between the Pack+ and Pack – terminals in the system.


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