This kit is fully compatible with Canon EOS 5D, 10D, 20D, 20Da, 30D, 40D, 50D, D30, D40, And 300D/Digital Rebel Digital SLR Cameras. The Mini Rapid Multi Voltage Charger plugs directly in to your wall outlet or your car"s cigarette lighter and charges your Canon battery in approximately 60 to 90 minutes. Its unique flat pin, foldable design allows easy storage and makes it the most compact battery charger on the market! Spare batteries will enable consistent high speed shooting, more flash shots, image review and playback, imaging in NEF/ RAW mode and operating in low temperature conditions without worrying if you will have enough power to get all the shots you want. This spare will not put constraints on how you want to shoot. Memory Free! This can be charged at any time without harm, even if it already has a partial charge and can be typically charged many times. Please note-These batteries are NOT compatible with the "Canon 5D Mark II".