Battery Monitor system
OwnerBrad Sanford
LocationNorthport, Alabama United States map
Email email image
Vehicle1987 Mazda B2200
1987 Mazda Electric Truck
MotorAdvanced DC Series Wound DC
DrivetrainCluthchless 5-speed. Built tranny adapter
plate out of 3/8 steel plate. Built motor
plate out of 1/2 aluminum plate. Built
coupler out 2" bar stock and original
ControllerCurtis 1231C-8601
500 amp
Batteries20 Crown CR225, 6.00 Volt, Lead-Acid, Flooded
225ah - 64lbs each
System Voltage120 Volts
ChargerZivan NG3
110vac input/ 120vdc output
HeaterExperimenting with propane heater with
possibly a fan
DC/DC Converter Dura Comm
Similar to the Iota 55
InstrumentationWestach State of Charge/ Ammeter/Auxillary
Summit Vacuum gauge
Top Speed60 MPH (96 KPH)
60 has been the fastest yet, but will
probably go faster. Efficiency is best
between 45-50 mph about 100amps in 2nd
gear. Handles better than expected.
Battery weight seems to be pretty evenly
AccelerationAcceleration is there if needed, but
usually accelerate conservatively to
maximize efficiency.
1st gear 0-30
2nd gear 30-50
3rd gear > 50
Range40 Miles (64 Kilometers)
Drive 20 miles one way to work and plug in
there for about 8 hrs. Do a full charge
back at home. Do this 2-3 days a week.
Watt Hours/MileUses about 8 kwh on a 20 mile commute to
EV Miles
Current:2,517 Miles (4,049 Kilometers)
Seating Capacity2 1/2
Curb Weight3,640 Pounds (1,654 Kilograms)
Front axle weighs 1900lbs
Rear axle weighs 1740lbs
Added new leaf springs- raised the rear
end back close to stock. Also added air
adjustable Monroe shocks - rides much
TiresStandard 14" tires
Conversion Timejust under 9 months
Conversion CostAround $8k
Additional FeaturesPower braking system - Volkswagen vacuum pump,
Designflex vacuum switch, 4"ABS plastic reservoir - system is
set up on timer, when vacuum drops below 10Hg, vacuum switch
closes and enegages the timer, pump comes on for 8 seconds.
Have installed a homemade battery monitor panel in the dash
consisting of 20 Voltwatch units - one wired to each battery.
Have two d-sub connectors fitted to turn on and off the battery
monitor system. Works great!

code by jerry