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Three-output smart marine charging
A premium Victron Phoenix Smart IP43 charger for three isolated 24V battery banks, with Bluetooth, VE.Direct, programmable lithium profiles, and universal shore-power input.
The Victron Phoenix Smart IP43 charger 24/25(3) is a 24V 25A Victron charger designed for complex marine and RV systems. Part PSC242553095 provides three isolated outputs so one 24/25(3) battery charger can maintain compatible house, bow-thruster, trolling-motor, or auxiliary banks while sharing a combined 25A charging capacity.
Charge three separate compatible 24V battery banks without installing three chargers.
The three-output version includes an integrated FET battery isolator. This keeps the connected banks isolated from one another, prevents unwanted current flow between banks, and distributes available charging current according to each bank’s voltage, state of charge, and capacity.
Each individual output can supply up to the full 25A rating, but the combined current across all three outputs is limited to 25A. The outputs also share one charge cycle and one voltage profile, so all connected batteries must be compatible with the same charging algorithm.
Any one output can deliver the full rated current when needed, while total charger output remains capped at 25A. This makes the system flexible without falsely treating the unit as three separate 25A chargers.
Use one 3-bank marine charger for compatible 24V house, windlass, bow-thruster, trolling-motor, or auxiliary banks. Separate monitoring is recommended when individual bank voltage, current, and state-of-charge data are required.
Configure the 24V charge profile from your phone and match the charger to the connected battery banks.
Built-in Bluetooth works with the VictronConnect app for setup, monitoring, history, alarms, current limits, and firmware updates. The charger supports LiFePO4, AGM, GEL, flooded lead-acid, and custom profiles—but all three connected banks must be compatible with the selected common profile.
Lead-acid profiles use Victron’s adaptive six-stage algorithm. The built-in 24V lithium profile uses a three-stage process with 28.4V absorption, no conventional float stage, and 27.0V storage. Custom voltages and operating limits can be entered through Bluetooth or VE.Direct.
Multi-bank isolation, global input, wireless setup, wired integration, and fanless operation.
Marine, RV, global shore-power, generator, and off-grid charging systems.
Wide-range AC input for North American marinas, international shore power, and generators.
The charger operates from 85–250VAC at 45–65Hz, reaches full rated output from 100VAC, and starts from approximately 90VAC. A configurable 3–10A AC input-current limit helps match charging demand to the available pedestal, generator, or branch circuit.
The IEC C14 AC inlet includes a retainer clip, but the country-specific mains cord is purchased separately. North American installations commonly pair this charger with Victron’s ADA010100400 NEMA 5-15P mains cord.
Marine-oriented protection does not mean waterproof installation.
The electronics enclosure is rated IP43 and the connection area IP22. Mount the charger vertically in a dry, protected, naturally ventilated location with the AC inlet, DC terminals, remote connector, relay, and VE.Direct port protected from direct spray, standing water, high moisture, and condensation.
Complete the installation with the correct AC cord, monitoring cable, sensors, and DC protection.
Exact input, output, charging, communication, environmental, and mechanical details.
Treat each output as a separately fused battery connection while respecting the charger’s shared profile and total-current limit.
Install suitable DC cabling and battery-side overcurrent protection for every connected bank, observe polarity, mount the charger vertically on a non-flammable surface, maintain airflow and clearance, and program one charge profile that is safe for all three batteries. Follow Victron, battery-manufacturer, marine, RV, and local electrical requirements.
Common questions about three-output charging, current sharing, lithium settings, shore power, monitoring, and installation.
The (3) identifies three isolated battery outputs. A single charger can connect to three separate, compatible 24V battery banks while preventing current flow between those banks. The outputs share one charging algorithm and one combined 25A current limit.
No. Any individual output can supply up to the full rated 25A when the other banks need little or no current, but the combined current across all three outputs can never exceed 25A. Current is distributed between the connected banks according to their voltage, state of charge, and capacity.
Not recommended. The three outputs are isolated, but they are not regulated independently. One charge cycle and one charge-voltage profile is applied to all outputs, so the connected batteries should be compatible with the same charging algorithm—typically the same chemistry and similar voltage requirements.
No. The charger has an IEC C14 inlet and includes a retainer clip, but the country-specific mains cord is ordered separately. North American installations commonly use Victron part ADA010100400, the 2-meter NEMA 5-15P cord, after confirming the outlet and installation requirements.
Yes, provided all connected battery banks are compatible with the same charge profile and the charger is programmed to the exact battery specifications. The built-in 24V lithium mode uses 28.4V absorption, no conventional float stage, and 27.0V storage; custom values can be entered through VictronConnect or VE.Direct.
Yes. Low-current mode reduces the charger to 12.5A, and the maximum AC input-current setting can be configured from 3A to 10A. Choose limits that suit the AC source, battery-bank capacity, cable sizing, and connected loads.
Yes. This model operates from 85–250VAC at 45–65Hz, reaches full rated output from 100VAC, and can start from approximately 90VAC. Use the correct country-specific mains cord, branch-circuit protection, grounding, and shore-power connection.
The electronics enclosure is rated IP43, while the connection area is IP22. The unit is not waterproof and should be mounted vertically in a dry, protected, ventilated compartment where the AC inlet, battery terminals, data port, and controls are protected from direct spray, standing water, and condensation.
VictronConnect reports the charger’s operating mode, charge stage, output voltage, total output current, history, warnings, and alarms. Because the three outputs share one charger and are not independently regulated, the charger does not provide three independent per-bank charging dashboards. Separate battery monitors may be used when individual bank data is required.
Yes. Power-supply mode provides a configurable fixed DC output with or without a battery connected. Confirm that the voltage, total load, wiring, overcurrent protection, and installation environment remain within the charger’s published ratings.
