Canon VL-10Li On Camcorder Battery Video Light is a compact powerful 10 watt video light. 3 Batteries, CH-910 dual charger( The CH-910 holds two battery packs and can charge them one after the other. Once the batteries are charged, the CH-910, with batteries in place, can be clipped to your belt and then connected directly to the camcorder. This will give you twice the recording time of just one battery. It can be used with any combination of Canon BP-900 series Lithium-Ion batteries.