Works With Most Battery Chargers. Allows 2S - 6S batteries to be properly balanced during charging process. Balance Board with 2S - 6S Terminals and Balance Board to Charger Cable Plugging cable into charger and plugging balance lead of battery into balance board COMMENTS: For the Duratrax Onyx 245 charger only. Connector Is On for , , Racers Edge, And Many More Batteries. Color: black+white material: plastic Product description This board works on most balance chargers. It will work with any 2S,3S,4S,5S and 6S batteries with a JST-XH Balance Plug. size: 65 x 26 x 13mm Package Contents: 2 x Balance Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.