Switronix Series 7 SL-E6 Rechargeable Lithium-Ion Battery Pack (1800mAh)The Series 7 SL E6 Rechargeable Lithium ion Battery is a 7. 4v, 1800mAh battery pack which works with the same cameras as the Canon LP E6, and can also charge on the Canon LC E6 charger. The SL E6 battery can also communicate with the camera allowing you to check the remaining capacity on the camera's power source information screen.