Energizer ENB-C5L Digital Replacement Battery NB-5L for Canon IXUS 970 IS, PowerShot SD900 and SX210 IS (Grey) Replaces the Canon NB-5L Li-ion Battery Battery Specs: 3.7V 820mAh Compatible with Canon IXUS 970 IS/PowerShot SD900/SX210 IS and similar camera models Can be used with original lithium-ion battery charger This Li-ion battery is 100% memory-free and will not suffer from the inconvenient memory effects that are typically associated with similar battery types.