7-pin Balance taps for wiring A123 packs in 2S to 6S configurations-25cm long wire. When wiring an A123 pack, cut all wires to length needed for longest span, and tuck any excess wiring between or along cells, under the shrink wrap. All wires should be same length to avoid voltage reading errors. (see LBA10-A manual for diagrams). This is an HP-style plug that is used on Hyperion, Polyquest, Max Amps, and other brand battery packs. Hyperion