The LiteHawk REBEL battery is a 3.7V 500 mAh Li-ion button top battery that fully charged will give you 4.2V to power your REBEL for approximately 15 to 20 minutes of run time. Please fully charge your REBEL battery before first use, and recharge it after using for further play or for storage. Always let the battery cool down for 10 minutes before recharging, or damage may result. If storing for a long period, consider maintenance charges every other month or so. Rechargeable batteries do degrade over time. When you plug the USB charger into a power source, the LED light in the Charger will remain off. When you plug the depleted battery into the USB charger, the LED light will come on solid Red. When fully charged, the Red LED light will turn off, indicating a full charge from a depleted state. It will take less time to charge the first time out of the box. Charge times are approximately 90 minutes. Don't leave the battery to charge for more than 2.5 hours. Never leave a charging battery unattended, and never charge on a flammable surface.
Installation in the battery box, as follows.