When cutting must not press too much, because otherwise the saw blade slightly wedged and stuck. Otherwise, they sawed quite well. (Judging by pine / spruce with approximately 13 mm thick boards)
The battery lasts about 10 minutes with permanent, rapid sawing. However, the battery will be warm after about 5 minutes of continuous use, and then shuts down completely, even at low temperatures. Here we have to wait a few minutes until the battery is cooled down to normal temperature. If the battery is almost empty, the electronics, the saw also switches off completely. A deep discharge of the battery is prevented.
When charging, the charger turns off when the battery is fully charged. However, the power supply of the charger starts after some time on loud audible growl.
Who is sawed much notice that when you press and release the button, the skin of the fingers is often pinched times, ie on the ergonomics could still working something.
Overall, it does for smaller jobs their service quite good. The electronics has matured, mechanically quite practical and safe. Price-performance ratio is great in any case in relation to other machines.