SWIT HB-A290B | 290Wh Battery with 28V B-Mount, 16V D-tap and USB-C/USB-A, also ideal for long term use or high power draw lights 290Wh Battery with 28.8V B-Mount(21.6-33.6V) and 16V D-tap, USB-C, USB-APower info on SONY/RED; 1xD-tap always output normal voltage; 250W stable output; Only 3 hours with 6A fast charging (by SWIT PC-P460B); LED indicators; 1.5m Drop-Off really tested; Multiple circuits and peak-current protections