This high-capacity lithium-ion rechargeable battery is a replacement for the Canon POWERSHOT S50 battery. The NB2LH can be used with all the cameras/camcorders that use the POWERSHOT S50 battery, but the NB-2LH has more miliamps or power. Click here to see our POWERSHOT S50 replacement battery which is a longer lasting battery for camcorders. Our batteries feature lithium-Ion technology, which ensures maximum battery life and maximum power.