Motive powerAxle tipsSide View
OwnerMark Fisher
Owner's Other EV2004 Yonkang Crown SEC-R700
LocationTakoma Park, Maryland US map
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Vehicle2009 Xtreme XB-600
"Motorized Bicycle"
Motorunknown Brushless DC
600 watt Hubmotor
DrivetrainHybrid: Pedal/chain and hubmotor. Pedal drive is absolutely useless, only added as legal fiction. My state sees this as a low-power step-through scooter, so I have removed drive chain.
Controllerunknown
Batteries4, 12.00 Volt, Lead-Acid, Gel
20AH SLA. Described as "Colloid Shortage Battery" [sic].

Series jumper plug supplies 48V for operation.
System Voltage48 Volts
ChargerVector 2-6-10
Rigged to a parallel plug, charging all 4 at once.
InstrumentationVoltmeter
Just added "DrainBrain" (Old, unused stock) so now I'll have an odometer, as well as a reliable measure of power usage.
Top Speed20 MPH (32 KPH)
Governor controlled
AccelerationAdequate.
Range20 Miles (32 Kilometers)
"Brochure value" Untested in reality.
Watt Hours/Mile43 Wh/Mile
This is WH consumed "at the plug," including charger losses.
Seating Capacity1.5
Curb Weight216 Pounds (98 Kilograms)
"Book value." It doesn't seem that heavy...
Tires12 x 2.5
Additional FeaturesFairly aggressive dynamic braking is an un-advertised function. It helps reduce break wear on the otherwise marginal drum braking system.
The user community is full of folks complaining about speed and hill climbing of the XB-600, but both are adequate for the promised function. The governor-limited top speed is frustrating on long flats, but there aren't many of those around here...

code by jerry