This is the Duratrax 4000mAh 7.4V 25C Stick LiPo Battery with Deans Connector. FEATURES: Works great for DuraTrax motorcycles as well as other cars, trucks and boats or any other application requiring a stick pack with a Deans plug Protective ABS case has the same dimensions as a six cell NiMH stick pack Wired for balancing with JST XH (ElectriFly Style) balance plug INCLUDES: DuraTrax 4000mAh 7.4V Stick 25C LiPo Battery with Deans Female Ultra Connector REQUIRES: Cell balancer such as the Great Planes Equinox Balancer (GPMM3160) for balance charging LiPo compatible charger such as the Onyx 230 AC/DC Charger (DTXP4230 SPECS: Capacity: 4000mAh Number of Cells in Series: 2 Rated Voltage: 7.4V Continuous Discharge Rate: 25C Maximum Recommended Charge Current: 1C (4.0 amps) Pack Dimensions: 5.3 x 1.8 x 0.9" (135 x 45 x 24mm) Discharge Lead/Connectors: 12AWG 3.9" (100mm) Deans Balancing Connector: ElectriFly Weight: 9oz (256g) Watt Hours: 30Wh 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 All weights include wire leads and plugs All weights +/- 1 g All measurements +/- 1 mm jxs 02/06/12 ir/jxs