battery pack for Sony a7S – Power Sony a7 & a6500 or similar cameras (with the NP-FW50 batteries) for +5 hours on 1 batterypack with 8.4v DC and 5v usb output.
Sony’s a7 and a6000 or similar series does suffer when it comes to batterylife of the NP-FW50 batteries. When I shoot with either my a7S and my a6000, I do carry plenty of batteries. They seem to last about an hour, which is NOT very good. The battery grip for the a7S (VG-C1EM) does double the batterylife, but also adds quite a lot in size and is not good when shooting on a rig.
I have a solution (Thanks for the tip Simon Conroy from Amberfilm) which will power your a7S or a6000 for +5 hours straight.
It’s the Ex-pro 7600 mAh battery with a dedicated Sony FW-50 battery adapter with a spiral kabel (1 m when stretched).
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I have stresstested it and can sy it will definately hold op for +5 hours in normal shooting conditions. It’s light and feels very sturdy.
It comes with a case and 1 adapter with a battery dummy which slides right in and replaces the regular battery. The cable has a spiral cord and it fits nicely through the lillte latch in the battery door of the Sony a7s or the a6000 cameras.
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Picture number 7 (right hand side of this page) shows the Ex-Pro® Sony On-The-Move 7600mAh Rechargeable Battery Power System with my a7S and the CYP-4KS scaler hooked up to it.
Conclusion: this battery pack comes heavily recommended and there is no doubt that I will purchase a couple more, to have as spares in the bag or for days with longer shooting hours.