This is the Traxxas Power Cell iD Technology LiPo battery.
Semi rigid construction does not require a hard case and eliminates wire harness connectors that can loosen and fail
Engineered specifically to fit Traxxas models
12AWG multi strand wire is soldered directly to the LiPo cells eliminating increased resistance from bullet connectors and accidental reversed polarity connections
EZ-Peak Plus 4-amp NiMH/LiPo Fast Charger with iD™ Auto Battery Identification
LiPo charging bag