This is a optional 1S 3.7V 150mAh Lipo Battery by Venom-Group. 3.7V 130mAh LiPo battery 25C continuous discharge rate and higher capacity than stock batteries for more power and longer run times Can be used with many mini helicopters on the market 1S 3.7V 150mAh Lipo Battery LiPo compatible charger, contact Venom-Group for recommended charger LiPo charging sack, GPMP0751 Length: 1.6" (41mm) Width: 0.47" (12mm) Height: 0.27" (7mm) Weight: 0.14" (4g) Configuration: 1S1P Continuous Discharge: 25C (4A) Connector: U-Micro READ the ENTIRE instruction sheet included with battery before use ALWAYS use a LiPo-approved Charger NEVER Trickle Charge 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 keep out of reach of children and pets ALWAYS store batteries in a cool, dry place between 40° - 80°F (4° - 26°C) If your model is involved in an accident or if the battery swells or becomes hot, follow these safety steps: 1. Remove battery from model or charger 2. Place battery in non-flammable vented area 3. Observe battery for 30 minutes from safe distance 4. After 30 minutes, if battery appears stable, is not swollen, and shows no signs of damage, return battery to normal use with caution. GX 1/5/11 ir/jxs &