This UL listed battery charger(UL File #E491234, Model #IN4202500) is designed for safe charging of a 36V Lithium ion battery pack of capacity > 8Ah. The 42 volt 2.5 amp li ion charger features. ● Modern algorithms to enable accurate charging ● Microprocessor controlled and full automatic ● Can be custom made to fulfill vary requirements ● Auto cell detection and Pre-charge ● Protect against reverse connection, short circuit and backfeed ● Battery charger UL approved to UL 1012 power units other than Class 2 and Canadian Standard for Battery Charger, CAN/CSA-C22.2 No. 223-15, Third Edition Intai offers an array of UL listed charger rated from 4.2V to 58.8V with output capability up to 250W. And most of the UL certified chargers also come with CE, PSE, RCM certifications. The briefing on difference between UL 60950-1 charger and EN60335-1/2-29 charger: Rated input, SELV, Creeping distance, BFP, Fuse...