The LI-92B Rechargeable Lithium‑Ion Battery from Olympus is compatible with several of their digital cameras. It features 3.6V of output power, a capacity of 1350mAh, and a rating of 4.9Wh. It can be recharged externally with the optional UC‑90 charger, or while it's in the recorder
 
Compatible with the following Olympus recorders;
 
DS-2600
DS-9000
DS-9000
DS-9500IT
DS-9500IT
 
Also works with the following Olympus cameras;
Stylus SP-100
Stylus XZ-2 iHS
Tough TG-4
Tough TG-3 iHS
Tough TG-2 iHS
Tough TG-1 iHS

Capacity: 4.9 Wh

Amp-Hours: 1350 mAh
Chemistry: Lithium-Ion
Output Voltage: 3.6 VDC