DuraTrax LiPo Onyx 3S 11.1V 5400Mah 50C Soft Case XT90 Nero RC Battery Ideal for use in Electric vehicles that require an XT90 Plug prewired with XT90 connector Requires: balancer and LiPo compatible charger or LiPo charger with built-in balancer such as the Onyx 235, DTXP4235 Voltage rating: 11.1V Discharge rating: 50C Continuous Dimensions: 5.2 x 1.6 x 1.1 (132 x 42 x 29mm) weight: 13.5oz Always use a lipo-approved charger always use a LiPo Cell balancer. Always charge in a fireproof location Never: trickle charge or charge over 4.20V per Cell. Never disassemble, puncture or modify pack in any way. Never leave UNATTENDED during charging.