Dock Battery Charger For Novatel Wireless MIFI 2200 2352 2372 4082 First adjust the push plate to accommodate the size of your battery; The plus plate can be pull down and rotate to fit various size battery as shown in the picture Place the battery on the push plate and align the 2 adjustable connector pong with the battery -/+ (If you can not identify the -/+ on the battery, it is usually the first and last charge connector on the battery) Simply connect the dock to a power oulet to start charging. Charge status indicator LED (Blinking Red LED indicate charging, Purple indicate idle) If blinking RED LED does not indicate, please try adjusting the 2 pong connector. If the battery have 4 charge connector, the -/+ is usually the first and last. If the battery have 3 charge connector, it is the first and second.