4144 40V Max 4Ah BatteryTroy-Bilt® powered by CORE™ 40V Max Battery
Model No. 490-280-Y001
This 40V Max* (36V nominal) lithium-ion battery powers the revolutionary CORE system and motor that's built with the industry's only limited lifetime warranty. Every unit in the Troy-Bilt powered by CORE system works on the same battery. So if you already own one battery, you can save money by purchasing just the bare tools.