With boat owners in mind, this Victron Energy Phoenix Smart IP43 Charger 3 Model is an adaptive 5-step charger that provides 50A of charge to each of three battery banks. With adaptive, intelligent, dynamic charge, this Bluetooth-enabled charger lets you monitor the charger and set alarms straight from your phone. Bluetooth Smart Built-InThe wireless solution to set-up, monitor, control, update, and synchronize Smart IP43 Chargers. Smart IP43 (3) ChargerThree full current outputs to charge 3 battery banks. Each output can supply the full rated output current, but the total of the 3 outputs combined can never exceed the current rating of the charger. Automatic Voltage CompensationThe charger compensates for voltage drop over the DC cabling by slightly increasing output voltage when the DC current increases. Adaptive 6-Stage ChargeBulk, absorption, recondition, float, storage, refresh. The Smart IP43 Charger features the well-known "adaptive" battery management system that can be preset to suit different types of batteries. The adaptive feature will automatically optimize the charge process relative to the way the battery is being used. Variable Absorption TimeWhen only shallow discharges occur (a yacht connected to shore power for example), the absorption time is kept short in order to prevent overcharging of the battery. After a deep discharge the absorption time is automatically increased to make sure that the battery will be fully charged. BatterySafe ModeIf, in order to quickly charge a battery, a high charge current in combination with a high absorption voltage has been chosen, the charger will prevent damage due to excessive gassing by automatically limiting the rate of voltage increase once the gassing voltage has been reached. Storage ModeThe Storage Mode kicks in whenever the battery has not been subjected to discharge during 24 hours. In the Storage Mode float voltage is reduced to 2.2 V/cell (13.2 V for a 12 V battery) to minimize gassing and corrosion of the positive plates. Once a week the voltage is raised back to the absorption level to 'equalize' the battery. This feature prevents stratification of the electrolyte and sulphation, a major cause of early battery failure. Automatic voltage compensation if voltage drops over DC cabling Variable absorption time helps prevent overcharging of battery BatterySafe mode & Storage mode | Expion360 Victron Energy Phoenix Smart IP43 Charger 12/50 (3) 120-240V in Blue