For sale is a great kit for powering your H series camera from either AC or common 6000mAh (or greater) 7.4V Sony L series batteries.
The kit includes a Hasselblad DC Power Grip kit for running off AC that I adapted to also run off L series batteries for when AC isn't nearby or for when a long cord would be a PITA.
The 6600mAh batteries I use (see link later) are cheap as chips and are 2x the mAh rating of the stock Hassy H5-6 series batteries.
The unit can be run off the Sony batteries via a short cord (say w/battery mounted to L bracket) or an included long cord.
I created and used it for a couple of specific projects, but no longer see a use for it. All connections are tinned, screwed in securely and hot-glued for tension relief & prevent water ingress
Included:
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1. Hassy DC grip for the camera, unmodified.
2. Hassy AC adapter & AC power cord, unmodified
3. Power cord from power brick to camera modified with common adapter shared w/ battery 'sled'
4. Sony L series battery sled modified with common DC socket. Unit has a rotating 1/4-20" stud on rear for mounting to L bracket or ____
5. Short, coiled, power cord
6. Long, large gauge* uncoiled, power cord (app. 12').
*Needed to prevent power drop over the distance,
Because of the issue shipping LiO batteries, none are included, but they are readily available for little coin. This is the US$59.00 kit I use which includes 2x 6600mAh batteries and 2 chargers. The higher the mAH rating, the longer they last.
https://www.bhphotovideo.com/c/product/1373127-REG/dracast_drbk2npf2ch6600_2_x_np_f_6600mah.htmlPrice is US$235 shipped by Canada Post Normal Parcel in N.A. Payment by EMT if in Canada or PP (add 3%).