Amazon.com: Synergy Digital Camera Battery, Compatible with Canon MVX3i Digital Camera, (Li-ion, 7.4V, 1500mAh) Ultra High Capacity, Replacement for Canon BP-508 Battery : Electronics
Kastar 4-Pack BP--511A Battery and LED2 USB Charger Compatible with Canon IXY DVM, DM-MVX1i MVX1i, DM-MVX2i MVX2i, DM-MVX3i MVX3i, DM-MVX100i MVX100i, DM-MVX150i MVX150i, DM-MVXLi MVXLi Camera - Walmart.com
User manual Canon MVX3i (English - 174 pages)
Kastar 2-Pack BP-511 Battery and LCD AC Charger Compatible with Canon DM-MVX3i MVX3i, DM-MVX100i MVX100i, DM-MVX150i MVX150i, DM-MVXLi MVXLi, DM-MV30 MV30 MV30i, DM-MV100 MV100i MV100X MV100Xi Cameras - Walmart.com
Kastar 3-Pack BP-511 Battery and LCD AC Charger Compatible with Canon DM-MVX3i MVX3i, DM-MVX100i MVX100i, DM-MVX150i MVX150i, DM-MVXLi MVXLi, DM-MV30 MV30 MV30i, DM-MV100 MV100i MV100X MV100Xi Cameras - Walmart.com
Amazon.com : VI VINTRONS 1500mAh Battery for Canon MVX100i, MVX150i, MVX2i, MVX3i : Electronics
Battery For Canon DM-MVX1i MVX3i FV M1 FVM1 FV M10 FVM10 FV10 FV100 FV2 FV20 NEW | eBay