This is the Reedy LiPo 2100mAh 7.4V LiPo Battery. FEATURES: For car usage Balance connector Durable case designed to protect battery INCLUDES: One Reedy LiPo 2100mAh 7.4V LiPo Battery REQUIRES: A LiPo charger like the Duratrax ICE (DTXP4170) and a balancing module like the Equinox Lipo Cell Balancer (GPMM3160) SPECS: Length: 2" (50.8mm) Width: 1" (25.4mm) Height: 1" (25.4mm) Weight: 3.17oz (90g) Lead Wire Size: 22 AWG Lead Wire Length: 4" (101.6mm) approximate Min. Discharge Volts: 6.0V COMMENTS: ALWAYS use a LiPo-approved charger ALWAYS use a LiPo Cell Balancer NEVER Charge over 4.20V 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 lmm 12/12/08 ir/jxs