Review on thirty by Stanislaw Kisiel ᠌

The device works 100%. I set the desired current, turned on the 14.8 mode and forgot. Will not recharge or boil. It charges without problems, the wires do not heat up. Fairly and accurately holds the stated voltage (see photo). On a heavily discharged battery, the voltage drops to 12V, gradually rises to 14.8V and enters the operating mode. The fan is small, but high-speed, so it buzzes loudly. At night, the charge had to be taken to a back room so that the ringing would not interfere with sleep. If you need a specific charging mode, you can easily adjust it manually. During the night I charged the battery at 72 Ah to a working state and entered the charge support mode, while the fan turned off. Satisfied with the device!