How often will you be using it? I have a plug-in one I bought from Harbor Freight. Because I don't have that many trees in my yard, my yard isn't that big and I use a chainsaw once every few years or so. I have 3 friends who each all have a different brand, but all have the battery ones. They all seem to work well. Sorry, I don't remember the brands of two of them. I know my one friend has an Ego and he has a place in Northern Wisconsin, so his gets used a lot. It has held up very well. The other guys are like me, maybe one every few years they pull out a chainsaw. If not used on a regular basis, I'd be worried about the batteries sitting for long periods of time.