Universal Battery Charger: Adaptable to most of the mini chainsaw lithium batteries on the market such as 20V, 21V, 24V, 26V, and 28V. INPUT: AC100-240V 50-60Hz OUTPUT: 21V-98V 1A DC Interface: 5.5*2.5mm Lithium Tool Battery Charger Quality Service: We provide 24×7 after-sales support service to solve any of your worries, please feel free to contact us. 21V Mini Chainsaw Battery Charger, Lithium Battery Charger, American Standard, Cordless Small Electric Portable Handheld Chainsaw Accessories (Universal Version)