This is the GrimRacer 4S 14.8V 5000mAh 40C LiPo Battery from AquaCraft.

FEATURES: Designed and tested specifically for boat hulls and boat racing

INCLUDES: GrimRacer 2S 7.4V 5000mAh 40C LiPo Battery with Deans Ultra
            Discharge Connector, ElectriFly style Balancing Plug and
            Instruction Sheet

REQUIRES: LiPo compatible charger and balancer
          LiPo-safe charging bag

SPECS:    Voltage Rating: 14.8V
          Cells: 4
          Rated Capacity: 5000mAh
          Discharge Rating: 40C Continuous, 80C Surge
          Max. Recommended Charge Rate: 1C (5.0A)
          Discharge Lead: 10 gauge wire with Deans Ultra connector
          Balancing Plug: ElectriFly style
          Dimensions: 6.34 x 1.77 x 1.50" (161 x 45 x 38mm)
          Weight: 19.7oz (557g)

COMMENTS: ALWAYS use a LiPo-approved Charger
          ALWAYS use a LiPo Cell Balancer
          NEVER Charge over 4.20V per cell
          NEVER allow LiPo cells to exceed 140°F (60°C) during charging
          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 the reach of children

                                                                   jxs 03/30/11
                                                                         ir/jxs