BP-608
This small, compact Lithium-ion battery pack has no memory, so you can charge the battery any time without the worry of lowering the batteries life expectancy.
Canon BP-608, 750 mAh, 7.2 V, Lithium-Ion (Li-Ion)
Canon BP-608. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 750 mAh, Battery voltage: 7.2 V. Weight: 60 g