The Dragonhawk Universal Wireless Battery Pack uses an RCA Cord connection, so can be used with many other machines too. Recall the last voltage used since turning off 180 day warranty Instructions: Press and hold the power button for 2-3 seconds to turn on and off Click the power button to cycle through voltages (6V-11V) When the machine is running, the battery will automatically switch to battery capacity display. The five indicator lights represent 20%-100% of the power. When you click the button again, the voltage will be adjusted and the lights will display the voltage chosen When charging, the 5 indicator lights show the charging status. When full, the indicator light stays on (the battery is protected from being overcharged). As long as you use a charger of 1A or above, the charging time of the battery is designed to be about 3 hours, and the usage time is designed to be about 6 hours.
