S-8970 is the replacement battery for SONY NP-F970, compatible with SONY HVR-V1/Z1/Z7, DSR-PD190, HD1000E, etc. S-8970 can exchange digital info with the cameras, and display remaining power info on the camera viewfinder. With 7.2V nominal voltage, the S-8970 has 47Wh / 6.6Ah capacity, and can run approx 5.5 hours on SONY HVR-Z1 camcorder when LCD monitor is on. The S-8970 can be charged on SWIT Dual channel charger S-3602F and SONY original charger. It takes about 4 hours and 30 minutes to charge from empty to 100%.