There is a very popular Black and Decker cordless chainsaw in the CCS818 with a 18-volt battery. Its price is very reasonable and the quality is good, making it a very good choice for work around the garden when you need to cut branches, bushes and such. The low price makes it reasonable to buy an extra battery, so that if the first one runs out, you can insert the other one while charging the first one. Two batteries should last for whatever task it is you need done. The Black and Decker cordless chainsaw is one of the most popular models, and positive reviews can be found in many sites around the web.