One 3.7V 400mAh Lipo Battery
Installation in the helicopter
Length: 25mm (0.98")
Width: 30mm (1.2")
Height: 9mm (0.35")
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.