ProMaster NPFW50 Li-ion Battery for Sony (7438) The Promaster NPFW50 replacement battery offers a price effective alternative powering your Sony DSLR, mirrorless or camcorder Add a spare battery to your equipment to ensure you have power when it matters Promaster batteries come with a 1 year unconditional warranty, and are made to match or exceed the standards set by the manufacturer Safely entrust your next photo trips or recording a childs' performance with batteries from ProMaster capacity: 1100.0 mAh | voltage 7.2 v