Black decker cordless chainsaws black decker gkc3630l20 gb p this cordless chainsaw from black decker is powered by a fade free lithium ion battery and offers approximately 560 x 3 5cm cuts per battery charge the gkc3630l20 has a lightweight design for easy use and manoeuvrability and a tool free chain tensioning system for quick and easy fitting and adjustment p p with an optimised balance and comfortable handle this chainsaw is fitted with a simple leak free oil system with automatic