This is the Great Planes ElectriFly BP Series Lithium Polymer 300mAh 7.4V 20C Battery Pack with Balance Connector. This pack"s light weight and low profile make it a great choice for indoor Competition Flying. Also works great for all other flat foamies, slow flyers, park flyers, small sport aerobats, 3D"s, or anywhere else a lightweight pack with a lot of power is needed. FEATURES: Balancing allows all cells to fully Charge to 4.2V ensuring maximum power from the pack, plus conditions the cells better so they will last longer Safer as long as the Cell Balancer or a properly equipped Charger with Balancing Capabilities is used INCLUDES: Great Planes ElectriFly BP Series Lithium Polymer 300mAh 7.4V 20C Balance Battery Pack with 20AWG 15-20mm long Discharge wire with Dean"s Micro connector and 24AWG 15-20mm long Charge Lead with ElectriFly Balance Connector and instruction sheet REQUIRES: Great Planes Equinox Cell Balancer (GPMM3160) or equivalent or Charger with balancing capability SPECS: Capacity: 300mAh Number of Cells in Series: 2 Rated Voltage: 7.4V Maximum Recommended Charge Current: 1C (300mA) Continuous Discharge Current: 6A (20C) Discharge Lead: 20AWG (15-20mm) long wire w/Deans Micro plug Charge Lead: 24AWG (15-20mm) long wire w/Balance Connector Pack Dimensions: 52 x 32 x 8mm (2.1 x 1.3 x .0.3") Weight: 0.7oz (19.6g) all plugs and wires are included in weights COMMENTS: READ the ENTIRE instruction sheet included with battery before use 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 jxs 10/03/06 ir/jxs updt 3/27/08