This is a comparison of Canon LP-E6 battery series. Its the original LP-E6 with 1800 mAh , LP-E6N with 1865 mAh and the latest LP-E6NH with 2130 mAh capacity. The original E6 can not be charged internally on a camera and the othe r two variants can. All the 3 batteries can be used with a powerbank without an issue while recording.