Do away with older products, they simply won't do the job. This lawn mower is industry standard, and comes complete with a 56-volt lithium-ion battery. It offerzs up to a 45-minute cut time with a 4.0Ah battery, stores especially well and can be cleaned in an instant! A true 3-in-1 function, it has abilities for superior mulching, rear bagging and side discharge performance. A true gem!