Hyperion 7-Pin Charger side (Female) Balance Connector, HP-style for 6S, These are the connectors that MATE to PolyQuest, E-Tec, and Hyperion Lithium Battery Packs. Use them to wire up a board with metal tabs, so that you can easily check the individual cell voltages within your pack with a voltmeter. You could also use these to attach PolyQuest, E-Tec, and Hyperion Lithium Battery Packs to some brand of Balance Adapter other than Hyperion LBA 6 (but we don't recommend that!).