OwnerLawrence Rhodes
Owner's Other EVs1997 Ford Aspire
EMB Lectra
Vego 600 SX
1980 Jet ElectraVan 750
Schwinn Stingray
2001 Lepton
1987 Honda VT700 Shadow
Chinese Electric Tricycle Pickup
2016 Nissan Leaf
2013 Nissan Leaf
LocationSan Francisco, California US map
Email email image
Vehicle2007 I-Zip
Electric Mini Chopper
MotorRad2Go 850w Series Wound DC
DrivetrainSprocket & Chain(#25)
ControllerShunwei Science & Technology Co. LTD SW-36w
Batteries3 Hawker Genesis, 12.00 Volt, Lead-Acid, AGM
Hawker Genesis 26ah Made for GE Medical systems. these batteries fit so tight I had to put in the first two(with the help of two friends)placing the molded towers between the frame to put in the bottom battery which acted like a keystone. All that was needed then to finish was side support to keep the batteries from shifting and the stock battery holder worked perfectly for this.
System Voltage36 Volts
Charger CC3614
Chinese 1.5 amp charger
HeaterNope
DC/DC ConverterErickkson PKE 4231EPI
Input voltage 36 to 72vdc output 5v & 12v @ 25 watts.
InstrumentationNone
Top Speed20 MPH (32 KPH)
Designed to meet California electric bicycle laws
AccelerationSlow.
Range25 Miles (40 Kilometers)
Seating Capacity1 adult
Curb Weight100 Pounds (45 Kilograms)
Just a guess
Tires24" front.
20 inch Big Boa style. Wider than some Motorcycle tires.
Conversion Time1 week
Conversion Cost280 dollars
Additional FeaturesI will try to have a front light using a DC/DC converter, horn and a switch to turn on and turn off the controller. I will use a bicycle style rear flashing light.
First ride was disappointing but the controller has two power settings so maybe the sluggish performance was caused by that. I'd like to have a controller cutout to straight battery power. Commonly called Turbo Mode. I'll try adding a switch for the internal controller high speed mode first. After more testing the problem with the controller is just a bad battery. The controller browns out at 29vdc so when that bad battery sagged the controller shut off. It is slow but it climbs hills well without heating up.

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code by jerry