Swit PB-R290S+ 290W V-mount IP54 HD akku: SWIT PB-R290S, 290Wh Waterproof IP54 Robust Heavy-duty Battery, V-Mount, SWIT Exclusive Quality Robust 290Wh Water proof and dust proof IP54 certificated 1.5m Drop-Off really tested, Protected with Robber Corners+Dual Housing Multiple circuits and peak-current protections 1xD-tap in/out Power info on SONY/RED 8-LED indicators Max output 250W/20A Only 3.5 hours with 6A fast charging (by SWIT S-3812S or PC-P460S) 14.4V 3 Years Guarantee