... Auto stop, reverse connect protection. 3,ISO9001:2008 standard. Intelligent battery charger SY-CH-20611,IntroductionIt is designed for charging the startup ... cell voltage is lower than set value(12V battery unit is lower than 12V,24V battery unit is lower than 24V).The 2061 ... been close to charge enough (12V battery unit is greater than or equal to 12V, 24V battery unit is greater than or equal ...