CAUTION: - Charge the battery at a temperature of 10 degrees -40 degrees, when the temperature is below 10 degrees will cause charging abundance and dangerous. The battery can not be charged in temperatures above 40 degrees, the most suitable temperature is 20-25 degrees charging. - Do not use the charger continuously when fully charged one time after power, have to wait about 15 minutes before the second electrical charge. - The charging time is not more than two hours, about 1 hour battery can be charged, one hour after going to stop charging, unplug the charger socket on the power plug. - Do not let debris into the rechargeable battery connector. - Do not remove the rechargeable battery and charger. - Must not let rechargeable battery short circuit. Short-circuit the battery will cause a large current and heat will burn batteries. - Do not dispose of batteries in fire, batteries heat will explode. - Do not use the battery completely runs out, otherwise it will damage the charger.