Has anyone here disassembled a Dell Inspiron 2650? 

The CMOS Battery seems to be soldered and located at the bottom of the board,  however I don't know the specfic type. 

I'm creating a database and don't actually have the system on me, but finding out the type will be extremely helpful as I can't find any information online besides CR2032, which it clearly isn't. 

Additionally, I've disassembled an Inspiron 5160 that also had a soldered CMOS Battery located at the bottom of the board, and noticed it was an ML1220 rechargable.

I want to say it probably also uses an ML1220, or rechargable battery however I'm not certain.