I changed a 20cm chain on a Hyundai saw. I cut with a lot of heat, the poor little saw suffered, when it got hot the motor and battery stopped. If you leave it at 15 cm and change the chain on a Hyundai, it will cut branches like paper. I give the little Chinese saw 5 stars

I have two of these for two years, it is a good value for its price, IF you buy it for 30 euros with TWO batteries and TWO chains like I did the other day...It is good for fresh olive branches up to diameter 35-40...But if you push it too hard, the left cover easily breaks, the one with the tightening screw, and now I am looking for a replacement. It still works, but with half a cover!!!...However, for 30 euros it is a decent purchase, my son who is in fourth grade can handle it...It will struggle with dry branches though...A good purchase, definitely look for the offer with the TWO batteries...The chain costs 7 euros here in Chania...

Worst construction I could not imagine! After 10 minutes of use, the chain stopped moving, while the motor was working fine. I made the mistake of opening it and trying to fix it with a makeshift solution that should have been included in the machine (a frame or lever on the axis that gives motion to the gears). After another five minutes, the same problem occurred with another gear. The end result was that the second gear broke and the machine was useless! STAY AWAY!!!

For the celebrations, its motor is like a child's toy, where you touch the gear that turns the chain and it stops, you don't hold it, you just touch it.
Additional evaluation:
The store I bought it from sent me a new one in a small suitcase this time, with the protective chain, which, straight out of the box without charging the battery, easily and quickly cuts lemon branches of 13cm