Is there any way for me to connect a mobile phone battery to our PCB other than the "phone battery connector" I uploaded? I'm still looking for alternatives and the wired ones like the one I attached too available nearby are either too expensive for their capacity like 500 mAh just goes for 10 dollars or too big (or thick) to fit inside the enclosure I am trying to design.
The battery attached is my other way out for this project but it's too thick at almost 20mm and my fire detector enclosure will be at 64mm (~2.5") at most in height because of that. If I could find a connector, then I could stay at 51mm(~2") at my current design which accepts up to 8 or 6mm of thickness I think.
I am looking for >1Ah 3.7V Li-ion batteries and I badly need the cheaper ones. Just suggestions for our project. Thank you.
You can easily solder wires to the contacts on the phone batteries. When I salvage phone batteries I solder wires with a standard JST connector so that I can use them just like any of my regular LiPo batteries.
@pert
Is it safe to do that? I've read articles online that it's quite possible but somehow risky for the battery because I ain't that good in soldering. But I'll try to see if it works. Thanks
I'm guessing the articles you saw were talking about making battery packs by soldering directly to lithium cells. That is indeed considered not a good idea since you will need to put quite a bit of heat into the cell to avoid a cold joint. This is why spot welding is preferred. However, the situation is different with a phone battery. The contacts on the battery are not directly on the cell. There is a whole BMS board between those contacts and the cell. That means there will not be much thermal conductivity between contact and cell and also that you won't need to put so much energy into the contact to get it hot enough for a good solder joint. So if you're reasonably conservative in your soldering there will not be any significant heat transferred to the cell. I found that they soldered quite easily. I really didn't keep the iron on the contact much longer than I would have when just soldering a header pin to a breakout board.
