Toro Owners Manual - Enlarge page 1 
From inside (document excerpt):
Workman e2050 WORKMAN e2050, MODEL 07280 MOTOR 48V separately-excited DC motor with external fan. Motor brush service life 1,500 hours. TRANSAXLE REAR SUSPENSION FRONT SUSPENSION MAX SPEED BRAKES FRAME GROUND CLEARANCE TIRES BATTERIES 16.99 to 1 ratio with helical gears. Direct drive double reduction with differential. Proprietary Active In-FrameTM suspension. Proprietary torsional independent “A “-FrameTM with 5 ” (12.7 cm) of travel at spindle.
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Infinitely variable 0-16 mph (0-25.6 km/h) with fully charged batteries. Economy/supervisor mode limits speed to 12 mph (19.2 km/h). Rear wheel mechanical drum, complemented with regenerative braking. Welded, high-strength steel channel and tube construction. Front: 7.75 ” (19.7 cm). Rear: 6 ” (15.2 cm). 22.5 x 9.5-10, 4-ply. Eight, 6V, T105 or US 2200. indicator light. ® CONTROLLER 48V, seperately excited with regenerative braking, 500 amps max. Includes rolloff indicator, thermal cutback, fully sealed/potted, status CHARGER 48V DC (nominal) 17 amp output. 12 hour average recharge time (depends on age, DOD, temperature). INSTRUMENTS/DASH 2 cup holders, radio holder and large glove box storage area.