I have a small (?) problem
I want battery cell is completely disconnected when my product is travelling (plane)
So I first put a bistable relay on pin 23 (BAT) to cell.
This works perfectly.
So where is the problem ?
It's about some shocks.
In rare cases, if my product as a violent shock, relay can cut the power too
So I decided to put a mosfet instead of relay.
I also add a voltage comparator so CHGOFF become high when celle is reaching 4V1 (this work)
But the problem is, even CHGOFF is on high level, charge continues slowly (in one or two days, it will reach about 4V4)
So my question is: how to get charge really stopping (perhaps I could join to CHGOFF NTC pin but did it really change anything ?)
Thanks for help