Buy Camcorder Batteries Good Battery Life Best Battery For Digital Camcorder 700, 1400, 3300mAh?

Best Battery for Digital Camcorder 700, 1400, 3300mAh? - buy camcorder batteries good battery life

I have a video camera JVC DVC my stepfather, but the battery life is terrible, and I look forward to buying a new battery for it ... Who says it can have 3 types of batteries

BN-VF707 (700mAh)
BN-VF714 (1400mAh)
BN-VF733 (3300mAh)

I assume that the BN will take a longer-VF733 (3300mAh), but I'm not sure