Polaroid Double (Dual) Battery Charger " Charge 2 Batteries At The Same Time" For The Canon LP-E8 (T4i, T3i, T2i), LP-E6 (7D, 5D Mark 2, 60D), BP-511 (20D, 30D, 40D, 50D) Batteries Interchangeable Snap In Plates Lets You Customize Unit To Charge Two Different Model Batteries or Two Of Same Model Batteries Simultaneously Intelligent LED Status Indicators For Real Time Charging Progress Dual Quick Charge One Or Two Batteries Simultaneously Designed For Todays "Memory Free" Battery Formulations Double Up Your Power, Save Time! &lt;&gt; AC & DC Chargers Included