OwnerSean Agnew
LocationGrants Pass, Oregon United States map
Vehicle1990 Sears
Craftsman Lawn Tractor, paid $120
MotorMars ME709 Permanent Magnet DC
8hp continuous, 19hp peak
Drivetrain18hp Briggs
ControllerKelly 72v 300amp non-regen
Batteries8, 3.20 Volt, Lithium Iron Phosphate
2 packs of four purchased from Elite Power Solutions. 90ah batteries, with over-charge shunts.
System Voltage24 Volts
ChargerIota 24v 15amp
2-stage charger
Top Speed10 MPH (16 KPH)
with only 24volts and even in high gear we're moving at a brisk walking pace.
Seating Capacity1 adult
Curb Weight250 Pounds (113 Kilograms)
Conversion Time2 months
Conversion Cost$2000
Additional FeaturesTo reduce weight all the grass mowing hardware was stripped off. This riding tractor has a trans-axle with 4 gears plus high/low.
A test project to see if we could do it and to see how well batteries will run. Am now regretting pulling the mowing gear off because these batteries run for a long time. We've hauled 500+ pounds of water on 90+ degree days and neither batteries nor motor warmed up much. It moves rather slowly given the 24v system, but so easy to use.

code by jerry