This is the TrakPower 2S 7.4V 50C 6200mAh Hard Case LiPo Battery with Dean"s Ultra Connector. FEATURES: Ideal for 1/10 scale car applications ROAR approved Prewired with Dean"s Ultra connector INCLUDES: 2S 7.4V 50C 6200mAh LiPo Battery with Dean"s Ultra Connector REQUIRES: Balancer and LiPo compatible charger, or LiPo charger with built-in balancer such as the DuraTrax Onyx 235, DTXP4235 SPECS: Battery Type: Lithium Polymer Cell Number: 2S Rated Pack Voltage: 7.4V Capacity: 6200mAh Max Recommended Charge Current: 1C (6.2A) Continuous Discharge: 50C (310amps) Pack Dimensions: 1.77 x 0.9 x 5.39" (45 x 25 x 137mm) Weight: 11.1oz (315.1g) Discharge Connector: 3.5" (88.9mm) 12AWG leads with Dean"s Ultra Connector Balance Connector: Standard ElectriFly balance connector 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 jxs 03/22/12 ir/jxs