see this post :@Pipes. My PSM is a touch old and no longer charges. I opened it up and discovered that all soldering was still in-tact. I'm guessing its the battery. Where can I find a replacement battery?
It needs to be 3S.
https://hobbyking.com/en_us/turnigy...light-compatible-eflb0995.html?___store=en_us
Max dimensions:
Pack Size: 55 x 30 x 25mm
Charge Plug: JST-XH
It's basically just a 3S 20C lipo battery. But dimensions are important. There's a bonus link in the part list within Pipes' FAQ.