My marshall major iv headphone not turning on and not able to charge but works fine with 3.5mm audio jack cable. I'm guessing that's because battery is faulty. I found dissemble video online and battery is Li-Pol battery with 3.7V (3-pin connector). Can I just buy the same kind of battery and fix it myself (no need for soldering)? Can I just plug in the 3 pin with the little chip inside the headphone?
Headphone battery
[image|2849117]
The battery I want to buy
[image|2849119]