Electronics > Beginners

Failed battery

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fixit7:
I have had this for a few years.

Charged it about 20 times.

I had 2 of them and one UBL running some 12 volt leds.

Both of the SkyWolfEyes went to 0 volts.

I claims to have a protection circuit.

The Sky ones weight 36 grams, 42 for the UBLs.

https://imgur.com/a/3vUnHcJ

Could my UBL have been damaged?

Thanks.

Daixiwen:
Are those 18650 cells? If so they are probably fake, you can't have a 5000mAh capacity in that size with today's technology.

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