The Victron Energy Phoenix Smart IP43 Charger 24/25(1+1) 120–240V, manufacturer part number PSC242551095, is an intelligent AC-to-DC battery charger designed for compatible nominal 24V battery systems. It combines a powerful 25A main charging output, a separate auxiliary starter battery output, built-in Bluetooth Smart connectivity, VE.Direct communication, and Victron Energy's adaptive six-stage charging technology.

The 24/25(1+1) configuration provides two battery connections with different functions. The primary output delivers up to 25A for a compatible house or service battery bank, while the auxiliary output supplies up to 4A at a slightly lower charging voltage to help maintain a separate starter battery. This configuration is particularly useful in marine, mobile, and other electrical systems that maintain separate service and starting batteries.

Unlike the Phoenix Smart IP43 24/25(3), which provides three full-current battery connections sharing the charger's total rated current, the 24/25(1+1) is specifically designed for a main battery bank and a limited-current starter battery connection. This distinction is important when selecting the appropriate charger for a multi-battery installation.

Important: The PSC242551095 is a 24V AC-powered battery charger with a 25A main output and a separate 4A maximum starter battery output. It is not a solar MPPT charge controller, inverter, or automatic AC transfer switch. The AC mains cord must be purchased separately; the AC inlet retaining clip is included.

Key Technology

• 24V Battery Charging: Designed for compatible nominal 24V DC battery systems.
• 25A Main Charging Output: Provides regulated charging for a compatible house or service battery bank.
• 4A Auxiliary Starter Output: Helps maintain a separate starter battery using a limited-current connection.
• Specialized (1+1) Configuration: Combines one main battery charging output with one auxiliary starter battery output.
• Wide AC Input Compatibility: Supports suitable utility, shore, and generator AC power sources.
• Built-In Bluetooth Smart: Enables wireless setup, monitoring, updating, and synchronization.
• VictronConnect Compatibility: Supports charging profile selection and available parameter adjustments.
• Adaptive Six-Stage Charging: Uses bulk, absorption, recondition, float, storage, and refresh stages.
• Variable Absorption Time: Adjusts absorption duration according to battery discharge conditions.
• BatterySafe Mode: Helps reduce excessive gassing in compatible lead-acid batteries.
• Intelligent Storage Mode: Reduces maintenance charging voltage during extended periods without discharge.
• Periodic Refresh Charging: Helps reduce electrolyte stratification and sulfation in suitable lead-acid batteries.
• LiFePO4 Charging Support: Includes a dedicated three-stage charging algorithm for compatible lithium batteries.
• Programmable Charging Algorithm: Allows supported charging voltage and current parameters to be configured.
• Three Preset Charging Profiles: Normal, High, and Lithium charging selections.
• Automatic DC Cable Voltage Compensation: Helps offset voltage drop across battery charging cables.
• 96% Maximum Efficiency: Supports efficient AC-to-DC charging operation.
• Low Current Mode: Provides a reduced-current charging option for suitable batteries.
• VE.Direct Communication: Enables wired communication with compatible Victron equipment.
• VE.Smart Networking: Supports synchronized charging with compatible chargers.
• Optional Battery Sensing: Supports compatible external battery voltage and temperature sensing equipment.
• Remote On/Off: Allows charging to be controlled through a compatible external switch, relay, or control circuit.
• Programmable Relay: Supports configurable alarm and operating-event functions.
• DC Power Supply Mode: Allows configurable output voltage for suitable power supply applications.
• Fanless Natural Convection Cooling: Supports quiet operation without a mechanical cooling fan.
• Reverse Polarity Protection: Includes internal fuse-based battery polarity protection.
• Short-Circuit Protection: Helps protect against output electrical faults.
• Overtemperature Protection: Helps protect the charger during excessive operating temperatures.
• IP43 Electronics Rating: Provides environmental protection for internal electronic components.

Best Uses

• Marine House and Starter Batteries: Charges a main 24V battery bank while helping maintain a separate starter battery.
• Shore Power Charging: Provides intelligent charging when a suitable marina shore power connection is available.
• 24V Recreational Vehicle Systems: Supports compatible mobile installations with separate service and starting batteries.
• Off-Grid Energy Storage: Provides AC-powered charging for suitable 24V battery banks.
• Generator-Assisted Charging: Charges compatible batteries from an appropriate generator AC supply.
• Remote Cabins: Supports battery charging and maintenance from a suitable AC source.
• Lead-Acid Battery Maintenance: Provides adaptive charging and storage functions for compatible batteries.
• LiFePO4 Battery Systems: Supports compatible lithium batteries with appropriate charging settings and BMS integration.
• Backup Power Installations: Helps maintain suitable 24V batteries used for backup energy storage.
• Integrated Victron Systems: Supports compatible remote monitoring, external control, and synchronized charging.

Product Specifications

Intelligent 24V House and Starter Battery Charging with Victron Smart IP43

The Victron Energy Phoenix Smart IP43 Charger 24/25(1+1) 120–240V PSC242551095 combines intelligent 24V house battery charging, a dedicated starter battery maintenance output, adaptive six-stage charging, built-in Bluetooth Smart, VE.Direct communication, and comprehensive electrical protection features.

Designed for compatible marine, mobile, off-grid, and backup battery systems, this charger provides a versatile AC-powered charging solution for installations requiring a primary battery bank and a separate starter battery connection.

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