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Auto Charge 4000, Model #: 091-89-12
auto charge 4000
Blue Bullet 40 Amps for Charging Vehicle Batteries
Blue Bullet Automatically Charges Dual Banks of Batteries
Blue Bullet Built-In 5 Amp Battery Saver
Blue Bullet Remote Dual Bar Graph Indicator
Blue Bullet Electronic Remote Battery Sensing
Blue Bullet Independent Control, No Interaction Between Two Systems
Blue Bullet No Water Boil Off
Blue Bullet 3 Year Warranty
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  • Charger
    Specifications
  • Instruction
    Manual
  • Related
    Products
Input: 120 Vac, 50/60 Hz, 8 Amps Max
Input Fuse: 12 Amps, Fast Acting
Output: 12 Vdc, 40 Amps
Battery Saver: 12 Vdc, 5 Amps
Output Fuse (Recommended): 80 Amps
Voltage Sense: No Sense Lines Required
Power Indicator: Indicates Input Power Applied
Battery Saver Overload Indicator: Indicates Battery Saver Exceeded 5 Amps
Charge Indicator: Remote Dual Bar Graph Display
Weight: 24 lbs
Warranty: 3 Years
Printable Datasheet.pdf (621 Kb)
Auto Charge 4000, 12 Volt - 091-89-12.pdf (153 Kb)











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outline drawing
The Auto Charge 4000 is a high output dual battery charger that independently charges two banks of batteries. Unique electronic sensing circuits senses the true battery voltage while eliminating the need for external sense wires. Charging is completely automatic. The maximum output of the charger is 40 amperes. The entire 40 amperes may be supplied to one battery or it may be divided between the two batteries. The lower charged battery is favored to receive more of the charge. When the two batteries are equally charged the charge is divided equally. When the batteries are fully charged, all charging stops. There is no overcharging and no water boil off.
A common problem with electrical systems is the loading on the battery caused by rechargeable hand lights, portable radios and other loads. The Auto Charge 4000 handles these loads with a built-in "BATTERY SAVER". Auxiliary electrical loads are connected to the "BATTERY SAVER" output. During normal vehicle operation these auxiliary loads are connected to battery #1. When the vehicle is plugged in to A.C. power, the auxiliary loads are automatically removed from the battery and powered from the "BATTERY SAVER" circuit. A maximum of 5 amperes is available from the "BATTERY SAVER". An automatic overload protector limits the 5 ampere output. A yellow overload indicator is illuminated whenever the "BATTERY SAVER" output limit is exceeded. 
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