You can use any newer Echo 18v battery. The clutch mechanism makes it incredibly safe. I found the starting instructions superfluous. It does not include it, and don't expect it to. You must use Motor oil, not chain oil.
The Echo CS-590-20 was our number one Echo Saws. Having said that, there were a few other truly premium Echo Saws we wanted to show you here that barely missed the mark.
Echo is yet another top producer of Saws. They produce the tool next on our lineup. Echo's Chainsaws are among their premier tools. I was eager to try out the model CS-400-18 and I was not disappointed!
The model CS-400-18 Chainsaw by Echo, at $294.99 is an especially excellent Saw for the money. The Echo CS-400-18 is really a solid alternative. Of you are unsure about our number one pick, I would opt for this Saw.
Full Echo CS-400-18 Review