Tree removal

After coming back from Portugal this 10" log needed to be cut thru and moved. My battery powered chainsaw only lasts 4 minutes at a time, so in 5 days I visited it 10 times and still had to cut the last inch by hand. I haven't tried my gas powered chainsaw yet, maybe that vibration would be enough to kickstart my left arm/wrist/hand recovery. WHOM DO I GO TO TO ASK THAT QUESTION?