Dynacore D-H310S 310Wh 14.8V High-Load V-Mount Battery

The D-H310S packs 24 Li-ion cells into a 14.8 V, 310 Wh, 21 Ah V-mount body and rates it for 300 W / 25 A continuous with a 380 W peak, which is the bracket a cine camera plus a monitor and a wireless link actually lands in. Dynacore doubles the battery connector polarity on the 7-pin terminal specifically to stop the electrode block overheating under that kind of load.

Two D-tap sockets share 150 W for accessories, USB-A gives 10 W at 5 V for a phone or a small recorder, and USB-C handles PD 2.0 / 3.0 at up to 60 W in both directions, so the pack charges from a laptop supply. A four-LED gauge reads the state of charge, a double press of the check button turns on a rear-facing work light for finding the V-mount plate in the dark, and the case is rated to survive a 1.2 m drop.