Amazon.com : Replacement for Canon HV20 Battery - Compatible with Canon BP-2L14 Digital Camcorder Battery (2700mAh 7.4V Lithium-Ion) : Digital Camera Batteries : Electronics
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Canon VIXIA HV20 Battery Replacement
NB-2L Battery & Regular Charger for Canon HG10 HV20 HV30, Optura 30, Optura 40 | eBay
Amazon.com : Replacement for Canon HV20 Battery - Compatible with Canon BP-2L14 Digital Camcorder Battery (2700mAh 7.4V Lithium-Ion) : Digital Camera Batteries : Electronics