The CM series type is Our company own product, is undergoes the technical change in the MMA foundation, increased the charge function. Both contains has the MMA function, and may carry on the charge to the 12V/24 accumulator jar, the charging current may reach 60A most greatly, smallest 1A electric current willfully adjustable, may satisfy the different accumulator jar's charge request, when after the storage battery fills, may the automatic cut out.