This the Venom Power 20C 2100mAh Lipo Battery with EC3 Plug. FEATURES: EC3 Plug Balance Plug 30C Burst INCLUDES: One 20C 2100mAh 11.1C LiPo Battery REQUIRES: LiPo capable charger and balancer SPECS: Charge Rate: 1C (2.1A) Continuous Discharge: 20C (42A) Min. Discharge Volts Per Pack: 9.0V Max. Burst Rate: 30C (63A) Max. Volts Per Cell: 4.2V Max. Volts Per Pack: 12.6V Dimensions: 25x36x106mm (0.98"x1.4"x4.2") Weight: 6.28oz. (178g) COMMENTS: ALWAYS use a LiPo-approved Charger ALWAYS use a LiPo Cell Balancer NEVER Charge over 4.2V per cell NEVER Charge at currents greater than 1C NEVER Charge through the "To ESC or "DISCHARGE" lead NEVER Trickle Charge NEVER allow to Discharge below 2.5V per cell NEVER disassemble or modify pack wiring in any way or puncture cells NEVER place on combustible materials or leave unattended during Charging ALWAYS Charge in a fireproof location ALWAYS set charger"s output volts to match battery volts ALWAYS keep out of reach of children cnh 4/29/09 ir/jxs