Wide voltage range input AC 115/230 V, 50/60 Hz automatic (except 10 A and 15 A of 230 V). | Safe and reliable chargers provide full power even at high temperatures (up to 50 °C/122 °F). Come in a very robust and compact housing. | DOLPHIN PREMIUM chargers feature industrial type connectors with ultra-resistant construction and "plug-and-play" wiring is super easy. | They are 100% compatible , they will work with any battery on the market. | Controlled by microprocessor for multistage charging technology . Can charge 4 different battery technologies, including LFP (lithium iron phosphate). | Automatic weekly battery equalization for longer battery duration. | Night mode (silent with fan disconnected) in 25A and 40A.