I purchased this as a spare to the NP-FH40 that was supplied with my Camcorder, the book says about an hour continuously recording and that would be about right. I ended up making the NP-FH70 my first battery and the other the spare, the book again says about 120-140 mins for this battery but I was sometimes up in the 180 mins mark (3 hours)worth of battery would fill 3 x 60 min tapes, although in reality you would be well through your second tape (hour) before having to reach for that spare! I think it is a good product for the price and is still relatively small so dosen't make the camcorder feel any more awkward to control.
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