X21 Battery not charging

[rsayyid]

Hello all.. Thanks for the great forum.
I recently got my wife an X21 off of eBay. Unfortunately, it turned out that the battery cannot be charged. I've tried a new battery on the machine, and everything works fine with or without the power adapter except that the system cannot charge the battery.

I suspect that the charging circuit is gone, however, I am not sure if it is on the motherboard for the x21 or not. I've tried looking through the hardware maintenance manual, but I can't find anything.

If it is on the motherboard, is it possible to get an external charger of some sort?

Thanks