How to power Sony a7 & a6000 or similar cameras (with the NP-FW50 batteries) for up to 20 hours on 1 batterypack with 8.4v DC output.
>> Important: ONLY works in movie mode NOT for photographs! Camera will freeze. <<
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 up to 20 hours straight. Here is what you need to make that happen:
EasyACC battery 20.000 mAh with DC8.4v output
AC adapter/charger for Sony NP-FW50 compatible cameras incl. battery adapter