What prompted this was me purchasing the bike light for very cheap at an REI returns sale. I think I paid $20 for the light. The tag on the item said that it had a bad battery. This was correct. I ordered a replacement battery and the light works fine now.
Still I was curious if there was anyway to repair the original battery. Since I had a dead battery pack on my hands I was curious. So I cut open the sealed plastic battery case.
The photos show what I found:
The photo above shows the back side of the circuit board. "S1" designates the on/off switch. If the battery were flipped over on its back you can see where the switch would fit back in place with the clear rubber switch cover of the case.
A close up of the battery. This is a lithium ion battery. It's shaped like a standard AA battery but a little larger. The battery is welded to the circuit board at the positive and negative terminals.
Replacing the battery for this pack would be tricky. The dead battery would have to be unsoldered and some careful quick soldering would be required to attach the new batteries to the terminals. Once in place, the pack would have to be resealed with some sort of plastic glue that would re-weld the cases halves together.
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hello, so, there are three wires inside the cord that goes to the light. do you have any pics of where they go? i know red and black would go to the battery. but mine has a yellow as well. any ideas? thanks, joe
ReplyDeleteit's probably the ground. hit it with a circuit tester...
ReplyDelete