Canon Knowledge Base - Attaching and charging the battery pack FS10, FS11 and FS100 camcorders
BP-808 BP 808 Battery for Canon FS300 FS100 XA10 VIXIA HG20 HF21 HFS11 HF S10
Amazon.com : Replacement for Canon FS100 Battery and Charger with Car Plug and EU Adapter - Compatible with Canon BP-808 Digital Camcorder Batteries and Chargers (Decoded 890mAh 7.4V Lithium-Ion) : Electronics