... ,to control and manage work voltage and current .FeaturesIntrinsic safety:no explosion and will not ... life,would be 8 times life of lead acid and 3 times of ... capability:for all high power output application .No memory effect:Always ready for charge and use ,with ... for large EV,light EV,boatsd,planes,small medical instruments and etc . 24V 20Ah lithium iron phosphate battery for UPS power supply ...