I always have had good luck with Sun Joe motors also. This little guy was exactly what I needed. I found the starting instructions superfluous. There are some important limitations. Time to sharpen it or buy a new chain.
Sun Joe SWJ803E Features & Specs
Ideal for cutting overhanging limbs and thin logs
Telescoping pole extends from 5.8 ft. to 8.8 ft. (1.8m to 2.7m) for up to 14 ft overhead reach
Multi-angle head adjusts from 0° to 30°
Powerful 8-amp motor cuts branches up to 9.5-inches thick
10-inch Oregon cutting bar and chain with automatic lubrication.No Load Speed (rpm):6000
Editor's Impressions Of The Sun Joe SWJ803E
Tool Motor Power
Value For Money
Sun Joe SWJ803E Final Thoughts
"Only 2 downsides I found."
Smaller trees and branches that need pruned. A second problem was the chain tension. Rebuilt them all more times than I can remember. I think it too was broken or the chain was dull. Good torque, I can't really slow it down.