Hi everyone! Long time lurker, first time poster here. I know that this thread is offtopic as this is a flashlight DIY forum, but I have a little project I’m working on and I thought maybe you guys would have the battery expertise from all your cool builds to help me.
Recently my Pulsonic electric toothbrush stopped working. Unfortunately I’m a little over my warranty period now and didn’t want to pay for a costly replacement. Now being a tinkerer, I disassembled the toothbrush and tested the rechargable battery. It appears that it’s dead and won’t hold a charge anymore - a common problem with these toothbrushes. The battery is soldered on, which isn’t an issue for me. I have a soldering iron and decent skill to desolder the existing pins and replace the battery. I also was able to narrow down an after market battery that has similar voltage, size, and current.
See the battery here:
(Tenergy 3.7V 800 mAh)
Now you can get these with or without tabs/pins. I bought one but the tabs they come with though are too wide and not long enough. So the issue is either finding a supplier for the correct pins or finding an alternative way to solder the battery to the PCB. If I were to find the right pins, I’d be soldering them on to the leads. I understand that this can be dangerous, but I think I can be careful and move the iron away before the battery heats up for too long.
Here’s a picture of a similar battery with the right pins:
http://oi59.tinypic.com/154c0hy.jpg
The two joints that need to be desoldered:
http://oi62.tinypic.com/24giyyr.jpg
Opposite view:
http://oi60.tinypic.com/dyvmdh.jpg
The PCB with the battery fitted in, before soldering:
http://oi57.tinypic.com/2gvm1wp.jpg
Does anyone know where I could find similar pins or if there is an alternative way to attach the battery? I’d really appreciate your help. Thanks in advance
