What power supply is needed to power the 24V-X2-SB18 Snow Joe's Cordless Snow Blower is Powered by exclusive IONMAX 24-Volt Lithium-ion Batteries. The standard batteries that come with the 24V-X2-SB18 unit are 4 Amps. For additional runtime, you can add our 24-Volt, 5.0 Ah, EcoSharp Pro Extended Runtime Batteries. Related articles Why Isn't my unit turning on? Battery and Unit Compatibility Guide Is my 24V battery compatible with this unit 24V-X2-SB22? How long will the batteries last on the 24V-X2-SB18 and what is the recharge time? Electric Dethatcher