Robomower Spare Power Pack

With this extra power pack, owners of Robomower never need worry about the lawn looking unkempt while the original battery recharges. With power equivalent to a 5.5 HP motor, the 24-volt battery is also a cinch to install. Simply drop the pack in and the mower is ready to go. The mower will run for 2-1/2 to 4 hours, cutting 4000 to 6000 square feet of grass on all terrains. Regularly-serviced batteries recharge in 6 hours, while completely depleted batteries take 24 hours. Batteries have a shelf life of 2 to 4 years on average. This power pack measures 13 by 12 by 11 inches, and weighs 32-1/2 pounds.