I got myself this device for my old T4 bus because my bike charger with max. Had to hang 1 A charging power to the battery 2 days to load it full again. The charging power is not perfect, the specified voltage of 14.4 V or 14.7 is not completely achieved, but it is very well suited for the preservation and maintenance of the battery. With deep discharged batteries (motorcycle battery of my neighbor with 5.7 V to unclear short circuit) so it can be regenerien unable to recognize the deep discharge and with the appropriate charge program unlike my "simple" charger only 4 stars.
