Sean's 1990 Sears Craftsman Tractor

Owner	Sean Agnew
Location	Grants Pass, Oregon United States ^map
Vehicle	1990 Sears Craftsman Lawn Tractor, paid $120
Motor	Mars ME709 Permanent Magnet DC 8hp continuous, 19hp peak
Drivetrain	18hp Briggs
Controller	Kelly 72v 300amp non-regen
Batteries	8, 3.20 Volt, Lithium Iron Phosphate 2 packs of four purchased from Elite Power Solutions. 90ah batteries, with over-charge shunts.
System Voltage	24 Volts
Charger	Iota 24v 15amp 2-stage charger
Instrumentation	none
Top Speed	10 MPH (16 KPH) with only 24volts and even in high gear we're moving at a brisk walking pace.
Seating Capacity	1 adult
Curb Weight	250 Pounds (113 Kilograms)
Conversion Time	2 months
Conversion Cost	$2000
Additional Features	To 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.

1990 Sears Riding Mower