under the hoodtrunk viewside view of the front
OwnerDavid Peichel
LocationMinneapolis, Minnesota United States map
Web/EmailWebPage email image
Vehicle1997 Geo Metro
4 door sedan
MotorAzure Dynamics/Solectria AC24 3-Phase AC
50 hp peak, 17 hp continuous
Drivetrain5 speed manual
ControllerAzure Dynamics/Solectria DMOC445
Digital Motor Controller with regen braking
Batteries13 Deka 8G31DTM, 12.00 Volt, Lead-Acid, Gel
Deka Dominator manufactured by East Penn-Deka, 70 lbs
each for a total of 900 lbs. These batteries worked well with
the original Solectria Forces.
System Voltage156 Volts
ChargerZivan NG3
Setup for 110V power source
HeaterOne 1000 watt heater under the seat (powered by a separate
lithium pack) and one 60 watt seat heater. Plan on upgrading
to a 3000 watt fluid heater next winter.
DC/DC ConverterIota 55 Amp
This unit was installed without modifications and is mounted
using vibration mounts. The car has pretty minimal load on
the 12V, so this unit works well.
InstrumentationXantrex Link 10 battery pack monitor
Top Speed70 MPH (112 KPH)
AccelerationSimilar to original geo metro.
Range40 Miles (64 Kilometers)
My daily work commute is about 36 miles and is half city
and half freeway miles. In the winter, the range may be as
low as 30 miles due to cooler battery temps and more
drive train resistance. In the summer, if you could drive it
at slower speeds without stopping you could probably get
close to 50 miles of range.
Watt Hours/Mile200 Wh/Mile
If we had concrete roads, you might get the advertised 175
Whr/mile, but our asplalt roads drive the rolling resistance
up a bit. The 300 Whr/mile is for really cold days in the
EV Miles
Start:87,780 Miles (141,238 Kilometers)
Current:116,833 Miles (187,984 Kilometers)
Total:29,053 Miles (46,746 Kilometers)
Seating Capacity4 adults
Curb Weight2,700 Pounds (1,227 Kilograms)
I haven't weighed the complete vehicle yet, but this should
be pretty close.
TiresGoodyear Integrity 175/70R14
Conversion Time~200-300 hours
Conversion Cost$15,500 included car and conversion parts, batteries were
another $2700
Additional FeaturesUpgraded to 14" rims for lower rolling resistance tires. The kit included upgraded rear
load springs, and I also installed higher performance rear struts. Battery boxes were
fabricated from welded polypropylene. Silicone strip heaters will be used to keep the
batteries warm in the winter if the car is parked over the weekend.
Most of the batteries are still pretty balanced, but 2-3 of the batteries are tending to run
lower voltage and tend to be the range limiters. Am considering adding some active
balancers to help with these weaker cells.

The vehicle accereration is less than what most people are used to, but it is sufficient for
my commute. If you have a lot of hills or aggressive freeways to negociate then you will
probably need more power. I've also gotten good at driving efficiently to maximize my
range. As everyone knows with lead acid batteries, the slower you pull the energy out
the more you get, so the best range extender is just driving slower using side streets.

The lead acid pack also leaves something to be desired in the discharge curve. The last
5-10 miles of the range can be at reduced power levels due to the declining capability
of the battery pack. I look forward to upgrading to a lithium pack when this pack wears

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