This is the instruction manual of the Philips charger. The features of the product include negative voltage detection, high-efficiency P-Channel MOSFET drive transistors, 11-15V DC input, 4-8 battery packs, 0.5-6.5A adjustable fast charging current, 100mA trickle charging, 10 and 2A fixed discharge rates, selectable cycle functions, four multi-function high-intensity LEDs and audible tones, dual built-in miniature fans to keep the charger cool, reverse polarity and overload protection, and the ability to charge transmitter batteries.