5AH 26650 4S2P 4.6Ah Battery Cassette LiFePO4

WARNING: Lithium batteries can explode or catch on fire, they can dump massive amounts of power, will melt things and burn up your devices. Build and use at your discretion, this is a record of what I have done not a suggestion that you do it.

Battery cassette built to retro fit a Profoto Acute B originally equipped with a PB cell to Li for under $650 which Profoto charges for their battery. The cassette is held together with two screws and a lots of kapton tape... also necessary because the