Ebike Polar Bear quad battery combiner 50A (4 in 2 out)

This quad battery setup for most of ebike up to 2000w

During use the battery with the higher voltage will power the bike until such time when all batteries have equal voltage, then both batteries will power the bike simultaneously, giving you the combined current of all. The batteries should have good overlap in voltage (ideally the same). For example, combining a 48v and a 52v battery will work, but is not ideal since there is little overlap in voltage between the two batteries. A 48v & 72v battery have no overlap, thus they would not work together. The capacity (rang) while using this device can be greater than when using each battery sequentially, since the bike can then operate at a higher average voltage .

Safely connects 4 batteries together for added range

Voltage Range: 12v - 84v

Voltage drop <0.25v