I've just bought 2 Li-ion batterie and respective charger in the hope that I could easly replace the non-replaceable one powering my new headphones.
Because things are never as easy as they seem, the project didn't work...
Hence after browsing a bit on the net I landed here for help.

My headphones are powered with an Li-Ion battery with the following characteristics:

3,7V, 500mAh, and 2,0Wh

It's lettering are: +AHB622540 and OA21200-0021

I've bought, thinking only on voltage and more capacity, the following one

3,7V, 1700mAh, 6,2Wh

Model No: CS-NP170MC
Part No: NP-170, CB-170

I'm guessing the problem is the difference in output?
Anyway, Is there a way that I can use the new battery? Maybe using a resistence?

Thanks in advance.

 

Exactly what didn't work? The battery should power it no problem.

 

When i use the original battery everything works, leads light on, and i can talk and ear ppl. when I try the new battery, the leads won't light up.
If yous say it should work (as I 1st thought also), then it's maybe a polarity problem, since I dunno the native battery polarity.
But I've tried to invert it too...

 

Ok, thanks for the help, really helped me cause I was getting confused
The problem was in my home-made battery adapter that was'nt making good contact with the battery (thought it looked to me it was )
Anyway cheers