This is the 3.7V 400mAh LiPo Battery Pack for use with the Heli-Max Novus CX/FP/CP Helicopter Series. FEATURES: Pre-installed connector INCLUDES: One 3.7V 400mAh Lipo Battery REQUIRES: Installation in the helicopter SPECS: Length: 25mm (0.98") Width: 30mm (1.2") Height: 9mm (0.35") COMMENTS: Never charge in excess of 4.20V per cell. If the battery should become damaged, discard the battery. Do not attempt to use a damaged battery. Disconnect the battery from the charger and carefully move the battery to a fireproof location if the battery begins to swell or smoke! Never charge at currents greater than 1C. Always charge in a fireproof location. Never trickle charge. Never allow the battery temperature to exceed 150° F (65°C). Never disassemble or modify pack wiring in any way or puncture cells. Never discharge below 2.75V per cell. Do not place the battery on a flammable surface or near a combustible material while in use. cnh 4/22/09 ir/jxs