On Tuesday, February 12, 2019 at 3:21:32 PM UTC-8, Mike wrote:


I can't think of any place a jumper will be useful.
Don't even think about shorting the BMS chip.

blush... isn't a bare metal battery better than a dead one?

The cells are protected against under/over voltage. You need all that.
My limited experience with this battery is that it shuts off charge
when either cell reaches 4.2V.
I prefer to quit before that, around 4-4.1V/cell

I have a little 9V charger, blissfully ignorant of balancing acts.


https://imgur.com/pAjauT7

I poked a tiny hole in the side of the package so I could poke a probe in
and access the point where two batteries connect in series.

Mine looks the same. I totally missed the tap to the series connection there.

If I ever need it again, I can use that and the two 9V terminals
to charge each cell individually to 4V. I'm hoping that the
battery will shutdown output at a voltage higher than the voltage
that prevents charging. Not had to test that yet.

Maintaining balance is a proactive activity.
(swaying precariously) tisn't what happy consumers sposed to have to do?

It's been three years. Probably should open up all the meters
and recharge 'em.

amen! and get rid of the devices that just stay on to the last millivolt.
Meanwhile, I appreciate the knowledge that allows me to wake these (still costly) batteries from their self induced coma... wish it were easier.