Electric bike kit help

[Madison]

I bought a kit.
Straight out of China.
Not recommended!
( I won't go into too much details but their service and parts suck!)
Anyway.
I found that the rear light had come loose after install, water entered, and I assumed the battery was shot.
Took it off the bike, let the it set for a couple of weeks and just tried it for kicks.
The battery looks okay.

There is a part that was contained within the battery.It's a little red circuit board with led meter levels
I know it is the voltage level check meter but I am wondering if it has something to do with the charge controller?
(I'd assume the charger has an auto shut off)
I thought maybe someone here would know?
If, it is only the meter, I don't care if it doesn't work because there is level meter on the accelerator anyway.
I think it was causing a short and it is definitely shot from getting wet.
Just wondering if I can trash it?

Thanks
Here are some pics

[EL34]

Can't help with the circuit board thing

Is this a kit to make a bicycle into an electric motorized bike?

Have been seeing ads everywhere for bicycle conversion kits.

This place has a ton of them

Gas engines
http://www.bikeberry.com/gas-engine-kits.html

Electric kits
http://www.bikeberry.com/electric-motor-kits.html

Not that I want one, but all these kits just sprang up out of nowhere recently.

[PRR]

I think it is just your voltmeter. Set it aside.

Charge the battery. See if it runs.

[Madison]

I think you're right.
That's a lot of tiny parts just for a volt meter.
Charger auto shutting off @ 42V, where it should.
I'll put it (back) together and see what happens.
Thanks.