This is a Traxxas iD LiPo Battery Adapter. Traxxas Balance Lead Adapter enables you to connect your Traxxas iD batteries to accessory cell voltage checkers without using the EZ-Peak Live app with EZ-Peak Live chargers. The adapter is compatible with 2s, 3s, and 4s Traxxas iD LiPo batteries.
Note:
Do not attempt to use the TRA2938X adapter for charging or any purpose other than adapting Traxxas iD batteries to accessory cell