To answer your question without going off track....................I bought an Echo battery saw over 4 years ago and use it often. It is my go to saw for smaller jobs, On average the battery seems to last for about 30 minutes of cutting which is fine. We both seem to run out of "gas" about the same time.
If the job is mainly cutting up 3 inch limbs or smaller my go to is a Dewalt battery reciprocating saw with a coarse blade.
