kobalts 80-volt battery and charger kit (2.5ah battery and charger) kobalts our highest voltage. that’s exactly what kobalt’s rugged lineup of 80v max tools delivers, thanks to its professional-grade lithium-ion battery platform. you get longer run times with no gradual drop in power, and because kobalt equipment is designed to make your job easier, all our batteries can be quickly swapped to keep you rolling – and blowing and cutting and trimming. kit includes 80v 2.5ah battery and compact charger.