Is a standard three-stage charger， the first phase of constant current charging the battery until the battery voltage reaches a predetermined threshold after the second stage is converted to constant voltage (voltage limiter) charge， then with increasing battery capacity， charge current gradually is small， but the current value is reduced to a certain extent， the charger automatically switches to the third stage of the floating charge mode the battery trickle charge (when the charge will be reduced to meet the battery voltage floating charge mode optimal voltage value， even if the long-term battery charging at this voltage will not damage) the maximum extension of battery life.

        Battery charger output plug into the first group stage seat and remain reliable connection and access to the charger 220 volt power， this time charging indicator light is red， when the charging indicator light is green， the battery is sufficient， unplug the plug socket.

Electrical impulse warranty for six months， excluding the following two cases resulting from

      1. Make sure charger output and battery positive and negative， as otherwise it will damage the charger and battery.

       2. Make sure the battery is rechargeable， the same voltage