Battery Problems

[milly]

Dropped battery 2 foot max and then did not light up the battery level display. Checked output voltage 18.6 charged it 18.9v as it should be for a 24v battery. All wires have continuity and voltage. All plugs, switch and fuse ok.
The only thing not showing is battery display when the button is pressed not sure if that would affect anything as not got small enough screwdriver till tomorrow.
Also put battery on bike and nothing.

[FrankenMech]

Sorry, can't help you. I don't know anything about Lithium battery construction or charging systems. I have never worked on anything but lead-acid, NiCd, NiMH.

[snaker]

Your kind of into some "Authorized service personnel only" territory.
If returning it or getting it to someone is out, then your in the nothing to lose territory.
But those things do have some energy and fire risks, so it might not be worth it to gerry rig.

Without any indepth knowledge and no test equipment, your down to a couple meter test points, but mostly visual inspection.
I would get a good magnifying glass and look at everything.
Check every electrical connector at each pin (connection and crimp), battery terminals and wire ends.

Circuit boards:
Look close at each connection, including each of the IC legs.
I see mounting screws on the skinny dash board, but not on the square board.
Is that loose and bouncing around?
If a loose board takes a beating, it can flex and crack a conductor trace, which is the same as a broken wire.
I only see the red and black going to the dash board?
With all the components on that board, the red must be some sort of data buss and input/output power, assuming that is includes a switch?

If nothing else, maybe buy a exact replica and do some comparison testing?

[milly]

Nov 17, 2023 9:54:13 GMT -5 snaker said:

Your kind of into some "Authorized service personnel only" territory.
If returning it or getting it to someone is out, then your in the nothing to lose territory.
But those things do have some energy and fire risks, so it might not be worth it to gerry rig.

Without any indepth knowledge and no test equipment, your down to a couple meter test points, but mostly visual inspection.
I would get a good magnifying glass and look at everything.
Check every electrical connector at each pin (connection and crimp), battery terminals and wire ends.

Circuit boards:
Look close at each connection, including each of the IC legs.
I see mounting screws on the skinny dash board, but not on the square board.
Is that loose and bouncing around?
If a loose board takes a beating, it can flex and crack a conductor trace, which is the same as a broken wire.
I only see the red and black going to the dash board?
With all the components on that board, the red must be some sort of data buss and input/output power, assuming that is includes a switch?

If nothing else, maybe buy a exact replica and do some comparison testing?

Thank you FrankenMech done most of checks I can do. Circuit board paraphernalia beyond my scope other than obvious breaks or burnt out bits. The main circuit board below battery is like a sandwich with bottom one being glued to case internals between and on top.Top one is not loose but movable almost like it's a press fit. No more messing from me with it seen the danger those things can do. Put together and now residing out the house. I ordered a new one which is a 24v 10ah so just figured would look and see if anything simple before taking it back to shop.

[FrankenMech]

I keep all my questionable lithium battery devices outside in an old steel ammo box until I can dispose of them properly. I don't like lithium batteries.

I use some ventilated ceramic containers for the chargers.

Then I run around with a lithium battery implanted in my chest. I may blow up any second..........