Victron Energy PSC125053095 Phoenix Smart IP43 Charger 12/50(3) 120-240V
Victron Energy Phoenix Smart IP43 12/50(3) 50 Amps Across Three 12V Banks. Serious Shore Power for Serious Vessels.
Product Overview
The Victron Energy Phoenix Smart IP43 12/50(3) (PSC125053095) is a professional-grade, Bluetooth-enabled three-bank 12V battery charger delivering up to 50 amps of total output across three independent charge outputs each capable of supplying the full rated current, with the combined total capped at 50 amps. At 12V and 50A, this is the highest-output model in the Phoenix Smart IP43 range reviewed here, designed for larger vessels, motorhomes, and off-grid installations running multiple significant 12V battery banks that each require meaningful, managed charge current from a single shore power connection.
Like the rest of the Phoenix Smart range, the PSC125053095 is a true adaptive 6-stage charger Bulk, Absorption, Recondition, Float, Storage, and Refresh not a basic mains supply. Storage Mode actively maintains battery health during extended layup periods with reduced float voltage and weekly equalisation pulses, while BatterySafe mode prevents excessive gassing during high-current, high-voltage charging scenarios. A standout feature on this model is optional external battery voltage and temperature sensing via Bluetooth pairing a Victron Smart Battery Sense or BMV-712 Smart with the charger enables it to use the battery's actual terminal voltage and temperature for charging decisions, rather than the voltage at the charger's output terminals. This compensates for cable voltage drop and allows true temperature-compensated charging without physical sensor wiring back to the charger. VE.Smart Network support enables synchronised charge stage transitions across multiple paired Phoenix Smart chargers.
Key Specifications
- Part Number: PSC125053095
- Charger Type: Adaptive 3-bank AC-DC battery charger
- Output Voltage: 12V
- Output Configuration: (3) — three independent full-current outputs
- Rated Output Current: 50A total
- Output per Bank: Up to full rated current per output (combined total cannot exceed 50A)
- Input Voltage: 120–240V AC (worldwide voltage adaptive)
- Charge Algorithm: Adaptive 6-stage — Bulk, Absorption, Recondition, Float, Storage, Refresh
- BatterySafe Mode: Yes
- Battery Compatibility: Lead acid (all types), LiFePO₄ lithium
- Pre-Programmed Algorithms: 3 (selectable via mode button)
- Fully Programmable: Yes — via Bluetooth or VE.Direct
- Bluetooth: Built-in (VictronConnect app — iOS and Android)
- External Voltage/Temperature Sensing: Yes — via Smart Battery Sense or BMV-712 Smart (Bluetooth)
- VE.Smart Network: Yes — synchronised charging across multiple chargers
- VE.Direct Interface: Yes
- Remote On/Off: Yes — H and L terminals
- Programmable Relay: Yes — configurable via VE.Direct or Bluetooth
- Automatic Voltage Compensation: Yes
- Storage Mode: Yes — activates after 24hr without discharge; weekly equalisation
- IP Rating: IP43
- Input Frequency: Not specified — confirm with supplier
- Dimensions: Not specified — confirm with supplier
- Weight: 4.0 kg
- Efficiency: Not specified — confirm with supplier
Features & Benefits
- Three Independent Full-Current Outputs at 50A Total — Each of the three output channels can supply up to the full 50A rated current, with the combined total capped at 50A. Current is distributed dynamically based on each bank's demand — a deeply discharged house bank draws the bulk of available current while topped-up start and thruster banks draw little, without any manual balancing. At 50A total, this charger can meaningfully charge multiple large banks simultaneously during a marina stay.
- Adaptive 6-Stage Charge Algorithm — Including Refresh — Six stages covering the full lifecycle of battery charging and maintenance. Bulk delivers maximum current for rapid recharge. Absorption holds at the correct voltage while current tapers — adaptive to discharge depth, shortening for shallow discharges and extending for deep ones. Recondition recovers sulphated lead acid batteries. Float safely maintains a fully charged battery. Storage Mode reduces float voltage after 24 hours without discharge to minimise gassing and corrosion. Refresh — the sixth stage — brings the battery back to full charge from Storage Mode when conditions trigger it. The complete algorithm for long-term battery health across the full usage and layup cycle.
- BatterySafe Mode — When a high charge current is combined with a high absorption voltage, the rate of voltage increase is automatically limited once the battery approaches its gassing voltage threshold. Prevents excessive gassing that would otherwise damage plates and reduce electrolyte — without interrupting the charge cycle or requiring manual intervention. Critical protection in high-current 50A scenarios where gassing risk is elevated.
- Variable Absorption Time — Depth-Adaptive — Absorption duration adjusts automatically based on how deeply the battery was discharged. A vessel on shore power with shallow daily cycles gets short absorption to prevent overcharge. A bank recovered from deep discharge after a passage gets extended absorption to reach full charge. No manual adjustment required.
- External Battery Voltage and Temperature Sensing via Bluetooth — A Victron Smart Battery Sense or BMV-712 Smart can wirelessly communicate actual battery terminal voltage and temperature to the charger via the VE.Smart Network. This provides two advantages over charger-terminal-only sensing: first, it compensates for resistive voltage drop between the charger and battery terminals — the charger sees the actual battery voltage, not the elevated voltage at its own output; second, it enables true temperature-compensated charging — the charger automatically adjusts setpoints based on measured battery temperature, protecting lead acid batteries from overcharge in heat and undercharge in cold. This feature eliminates the need to run a physical sensor cable back to the charger in many installations.
- Storage Mode — Extended Layup Protection — Activates automatically after 24 hours without a discharge event. Float voltage drops to 2.2V/cell (13.2V for a 12V battery) to minimise electrolyte gassing and positive plate corrosion. A weekly absorption-voltage pulse equalises the battery, preventing electrolyte stratification and sulphation — the primary causes of premature lead acid battery failure in seasonally used vessels and vehicles. For a large liveaboard or charter vessel left on shore power between use periods, Storage Mode is the feature that preserves the battery investment.
- VE.Smart Network — Synchronised Multi-Charger Operation — Pair two or more Phoenix Smart IP43 chargers in a VE.Smart Network to synchronise their charge stage transitions. All chargers in the network transition between Bulk, Absorption, and Float simultaneously — preventing stage conflicts between multiple chargers on the same or interconnected battery banks. Also enables the external voltage and temperature sensing data from a Smart Battery Sense or BMV-712 Smart to be shared across all chargers in the network.
- Built-In Bluetooth — VictronConnect App — Monitor charge status, configure battery profiles, adjust algorithms, set alarms, and update firmware from any iOS or Android device. Direct Bluetooth access without additional hardware.
- VE.Direct Interface — Wired connection to Victron Cerbo GX, Colour Control GX, PC, or other devices. Enables full system integration and remote monitoring via the Victron VRM portal.
- Remote On/Off — H/L Terminal — External charger control via remote switch, relay contact, or open-collector optocoupler. Terminal H can be pulled high or Terminal L pulled low. Enables BMS charge control in lithium systems and panel switch integration.
- LiFePO₄ Lithium Battery Support — LiFePO₄ profiles configurable via Bluetooth or VE.Direct. BMS charge/discharge control via the remote on/off H/L terminals. Full voltage and current control also available via Bluetooth.
- Programmable Relay — Configurable via VE.Direct or Bluetooth to activate on alarm, charge complete, temperature, or other user-defined events. Active only while connected to AC power.
- Automatic Voltage Compensation — Increases output voltage proportionally with DC output current to compensate for cable resistance voltage drop. Works alongside external Bluetooth sensing for maximum accuracy.
- Worldwide Voltage Adaptive 120–240V AC Input — Accepts both Australian 240V and North American 120V shore power automatically. Suitable for vessels and motorhomes used across international destinations.
Technical Specs
| Specification | Detail |
|---|---|
| Part Number | PSC125053095 |
| Charger Type | Adaptive 3-bank AC-DC battery charger |
| Output Voltage | 12V |
| Output Configuration | (3) — three independent full-current outputs |
| Rated Output Current | 50A total |
| Output Per Bank | Up to full rated current (combined total ≤ 50A) |
| Input Voltage | 120–240V AC (worldwide adaptive) |
| Charge Algorithm | Adaptive 6-stage: Bulk, Absorption, Recondition, Float, Storage, Refresh |
| BatterySafe Mode | Yes |
| Battery Compatibility | Lead acid (all types) + LiFePO₄ lithium |
| Pre-Programmed Profiles | 3 (mode button selectable) |
| Fully Programmable | Yes — Bluetooth or VE.Direct |
| Bluetooth | Built-in (VictronConnect — iOS and Android) |
| External V/Temp Sensing | Yes — Smart Battery Sense or BMV-712 Smart (Bluetooth) |
| VE.Smart Network | Yes — synchronised multi-charger operation |
| VE.Direct Interface | Yes |
| Remote On/Off | Yes — H and L terminals |
| Programmable Relay | Yes — active during AC connection only |
| Automatic Voltage Compensation | Yes |
| Storage Mode | Yes — activates after 24hr; weekly equalisation pulse |
| IP Rating | IP43 |
| Input Frequency | Not specified — confirm with supplier |
| Efficiency | Not specified — confirm with supplier |
| Dimensions | Not specified — confirm with supplier |
| Weight | 4.0 kg |
Compatible With / Goes Well With
Primary Applications:
- Larger marine vessels with multiple 12V battery banks (start, house, thruster, bow thruster)
- Motorhomes and large campervans with multiple 12V banks on shore power
- Off-grid installations and cabins with significant 12V multi-bank capacity
- Charter and liveaboard vessels requiring professional-grade multi-bank shore power charging
Battery Types:
- All lead acid chemistries — flooded, AGM, gel (12V)
- LiFePO₄ lithium (12V) — BMS integration via remote on/off H/L terminals
External Sensing Accessories:
- Victron Smart Battery Sense (wireless battery voltage and temperature sensing — recommended)
- Victron BMV-712 Smart (battery monitor with wireless voltage and temperature sensing)
VE.Smart Network Pairing:
- Pair multiple Phoenix Smart IP43 chargers for synchronised multi-charger operation and shared sensing data
System Integration:
- Victron Cerbo GX (via VE.Direct — system monitoring and VRM portal)
- Victron SmartShunt or BMV-712 (battery bank monitoring)
- Victron VictronConnect app (free — iOS and Android)
Weight
4.0 kg
Frequently Asked Questions
How does external Bluetooth voltage sensing improve charging accuracy?
Without external sensing, the charger measures voltage at its own output terminals — which may be higher than the actual battery voltage due to cable resistance, especially under high current. A Smart Battery Sense or BMV-712 Smart measures voltage directly at the battery terminals and wirelessly communicates it to the charger, allowing it to use the true battery voltage for charge stage decisions. The result is more accurate Absorption and Float transitions and genuinely correct charge delivery to the battery.
What is BatterySafe mode and when does it activate?
BatterySafe activates when a high charge current is combined with a high absorption voltage setting, and the battery approaches its gassing voltage threshold. It automatically limits the rate of voltage rise to prevent excessive gassing that would damage plates and deplete electrolyte. At 50A, the risk of gassing-related damage is elevated compared to lower-current chargers — BatterySafe is an important protection at this output level.
Can I connect a lithium BMS to control this charger?
Yes. Connect the BMS relay or open-collector optocoupler output to the H/L remote on/off terminals. When the BMS signals that charging should stop, it opens the remote circuit, disabling the charger. Full charge voltage and current control is also achievable via Bluetooth for advanced integration scenarios.
What does the Refresh stage do in the 6-stage algorithm?
Refresh re-activates a full charge cycle on a battery that has been in Storage Mode — returning it to 100% state of charge from the reduced Storage float voltage. It activates based on time or voltage conditions defined in the algorithm, ensuring a battery that has been held at reduced Storage voltage is periodically brought back to full charge. This prevents the gradual capacity drift that can occur if a battery is maintained at reduced voltage without a periodic full recharge.
Can two Phoenix Smart IP43 chargers be synchronised on the same battery bank?
Yes. Pairing two or more Phoenix Smart IP43 chargers in a VE.Smart Network synchronises their charge stage transitions — all units move from Bulk to Absorption and from Absorption to Float simultaneously. Shared external sensing data from a Smart Battery Sense or BMV-712 Smart can also be distributed across the network, so all chargers use the same accurate battery voltage and temperature data for their charging decisions.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Victron Energy Phoenix Smart IP43 12/50(3) 50 Amps Across Three 12V Banks. Serious Shore Power for Serious Vessels.
Product Overview
The Victron Energy Phoenix Smart IP43 12/50(3) (PSC125053095) is a professional-grade, Bluetooth-enabled three-bank 12V battery charger delivering up to 50 amps of total output across three independent charge outputs each capable of supplying the full rated current, with the combined total capped at 50 amps. At 12V and 50A, this is the highest-output model in the Phoenix Smart IP43 range reviewed here, designed for larger vessels, motorhomes, and off-grid installations running multiple significant 12V battery banks that each require meaningful, managed charge current from a single shore power connection.
Like the rest of the Phoenix Smart range, the PSC125053095 is a true adaptive 6-stage charger Bulk, Absorption, Recondition, Float, Storage, and Refresh not a basic mains supply. Storage Mode actively maintains battery health during extended layup periods with reduced float voltage and weekly equalisation pulses, while BatterySafe mode prevents excessive gassing during high-current, high-voltage charging scenarios. A standout feature on this model is optional external battery voltage and temperature sensing via Bluetooth pairing a Victron Smart Battery Sense or BMV-712 Smart with the charger enables it to use the battery's actual terminal voltage and temperature for charging decisions, rather than the voltage at the charger's output terminals. This compensates for cable voltage drop and allows true temperature-compensated charging without physical sensor wiring back to the charger. VE.Smart Network support enables synchronised charge stage transitions across multiple paired Phoenix Smart chargers.
Key Specifications
- Part Number: PSC125053095
- Charger Type: Adaptive 3-bank AC-DC battery charger
- Output Voltage: 12V
- Output Configuration: (3) — three independent full-current outputs
- Rated Output Current: 50A total
- Output per Bank: Up to full rated current per output (combined total cannot exceed 50A)
- Input Voltage: 120–240V AC (worldwide voltage adaptive)
- Charge Algorithm: Adaptive 6-stage — Bulk, Absorption, Recondition, Float, Storage, Refresh
- BatterySafe Mode: Yes
- Battery Compatibility: Lead acid (all types), LiFePO₄ lithium
- Pre-Programmed Algorithms: 3 (selectable via mode button)
- Fully Programmable: Yes — via Bluetooth or VE.Direct
- Bluetooth: Built-in (VictronConnect app — iOS and Android)
- External Voltage/Temperature Sensing: Yes — via Smart Battery Sense or BMV-712 Smart (Bluetooth)
- VE.Smart Network: Yes — synchronised charging across multiple chargers
- VE.Direct Interface: Yes
- Remote On/Off: Yes — H and L terminals
- Programmable Relay: Yes — configurable via VE.Direct or Bluetooth
- Automatic Voltage Compensation: Yes
- Storage Mode: Yes — activates after 24hr without discharge; weekly equalisation
- IP Rating: IP43
- Input Frequency: Not specified — confirm with supplier
- Dimensions: Not specified — confirm with supplier
- Weight: 4.0 kg
- Efficiency: Not specified — confirm with supplier
Features & Benefits
- Three Independent Full-Current Outputs at 50A Total — Each of the three output channels can supply up to the full 50A rated current, with the combined total capped at 50A. Current is distributed dynamically based on each bank's demand — a deeply discharged house bank draws the bulk of available current while topped-up start and thruster banks draw little, without any manual balancing. At 50A total, this charger can meaningfully charge multiple large banks simultaneously during a marina stay.
- Adaptive 6-Stage Charge Algorithm — Including Refresh — Six stages covering the full lifecycle of battery charging and maintenance. Bulk delivers maximum current for rapid recharge. Absorption holds at the correct voltage while current tapers — adaptive to discharge depth, shortening for shallow discharges and extending for deep ones. Recondition recovers sulphated lead acid batteries. Float safely maintains a fully charged battery. Storage Mode reduces float voltage after 24 hours without discharge to minimise gassing and corrosion. Refresh — the sixth stage — brings the battery back to full charge from Storage Mode when conditions trigger it. The complete algorithm for long-term battery health across the full usage and layup cycle.
- BatterySafe Mode — When a high charge current is combined with a high absorption voltage, the rate of voltage increase is automatically limited once the battery approaches its gassing voltage threshold. Prevents excessive gassing that would otherwise damage plates and reduce electrolyte — without interrupting the charge cycle or requiring manual intervention. Critical protection in high-current 50A scenarios where gassing risk is elevated.
- Variable Absorption Time — Depth-Adaptive — Absorption duration adjusts automatically based on how deeply the battery was discharged. A vessel on shore power with shallow daily cycles gets short absorption to prevent overcharge. A bank recovered from deep discharge after a passage gets extended absorption to reach full charge. No manual adjustment required.
- External Battery Voltage and Temperature Sensing via Bluetooth — A Victron Smart Battery Sense or BMV-712 Smart can wirelessly communicate actual battery terminal voltage and temperature to the charger via the VE.Smart Network. This provides two advantages over charger-terminal-only sensing: first, it compensates for resistive voltage drop between the charger and battery terminals — the charger sees the actual battery voltage, not the elevated voltage at its own output; second, it enables true temperature-compensated charging — the charger automatically adjusts setpoints based on measured battery temperature, protecting lead acid batteries from overcharge in heat and undercharge in cold. This feature eliminates the need to run a physical sensor cable back to the charger in many installations.
- Storage Mode — Extended Layup Protection — Activates automatically after 24 hours without a discharge event. Float voltage drops to 2.2V/cell (13.2V for a 12V battery) to minimise electrolyte gassing and positive plate corrosion. A weekly absorption-voltage pulse equalises the battery, preventing electrolyte stratification and sulphation — the primary causes of premature lead acid battery failure in seasonally used vessels and vehicles. For a large liveaboard or charter vessel left on shore power between use periods, Storage Mode is the feature that preserves the battery investment.
- VE.Smart Network — Synchronised Multi-Charger Operation — Pair two or more Phoenix Smart IP43 chargers in a VE.Smart Network to synchronise their charge stage transitions. All chargers in the network transition between Bulk, Absorption, and Float simultaneously — preventing stage conflicts between multiple chargers on the same or interconnected battery banks. Also enables the external voltage and temperature sensing data from a Smart Battery Sense or BMV-712 Smart to be shared across all chargers in the network.
- Built-In Bluetooth — VictronConnect App — Monitor charge status, configure battery profiles, adjust algorithms, set alarms, and update firmware from any iOS or Android device. Direct Bluetooth access without additional hardware.
- VE.Direct Interface — Wired connection to Victron Cerbo GX, Colour Control GX, PC, or other devices. Enables full system integration and remote monitoring via the Victron VRM portal.
- Remote On/Off — H/L Terminal — External charger control via remote switch, relay contact, or open-collector optocoupler. Terminal H can be pulled high or Terminal L pulled low. Enables BMS charge control in lithium systems and panel switch integration.
- LiFePO₄ Lithium Battery Support — LiFePO₄ profiles configurable via Bluetooth or VE.Direct. BMS charge/discharge control via the remote on/off H/L terminals. Full voltage and current control also available via Bluetooth.
- Programmable Relay — Configurable via VE.Direct or Bluetooth to activate on alarm, charge complete, temperature, or other user-defined events. Active only while connected to AC power.
- Automatic Voltage Compensation — Increases output voltage proportionally with DC output current to compensate for cable resistance voltage drop. Works alongside external Bluetooth sensing for maximum accuracy.
- Worldwide Voltage Adaptive 120–240V AC Input — Accepts both Australian 240V and North American 120V shore power automatically. Suitable for vessels and motorhomes used across international destinations.
Technical Specs
| Specification | Detail |
|---|---|
| Part Number | PSC125053095 |
| Charger Type | Adaptive 3-bank AC-DC battery charger |
| Output Voltage | 12V |
| Output Configuration | (3) — three independent full-current outputs |
| Rated Output Current | 50A total |
| Output Per Bank | Up to full rated current (combined total ≤ 50A) |
| Input Voltage | 120–240V AC (worldwide adaptive) |
| Charge Algorithm | Adaptive 6-stage: Bulk, Absorption, Recondition, Float, Storage, Refresh |
| BatterySafe Mode | Yes |
| Battery Compatibility | Lead acid (all types) + LiFePO₄ lithium |
| Pre-Programmed Profiles | 3 (mode button selectable) |
| Fully Programmable | Yes — Bluetooth or VE.Direct |
| Bluetooth | Built-in (VictronConnect — iOS and Android) |
| External V/Temp Sensing | Yes — Smart Battery Sense or BMV-712 Smart (Bluetooth) |
| VE.Smart Network | Yes — synchronised multi-charger operation |
| VE.Direct Interface | Yes |
| Remote On/Off | Yes — H and L terminals |
| Programmable Relay | Yes — active during AC connection only |
| Automatic Voltage Compensation | Yes |
| Storage Mode | Yes — activates after 24hr; weekly equalisation pulse |
| IP Rating | IP43 |
| Input Frequency | Not specified — confirm with supplier |
| Efficiency | Not specified — confirm with supplier |
| Dimensions | Not specified — confirm with supplier |
| Weight | 4.0 kg |
Compatible With / Goes Well With
Primary Applications:
- Larger marine vessels with multiple 12V battery banks (start, house, thruster, bow thruster)
- Motorhomes and large campervans with multiple 12V banks on shore power
- Off-grid installations and cabins with significant 12V multi-bank capacity
- Charter and liveaboard vessels requiring professional-grade multi-bank shore power charging
Battery Types:
- All lead acid chemistries — flooded, AGM, gel (12V)
- LiFePO₄ lithium (12V) — BMS integration via remote on/off H/L terminals
External Sensing Accessories:
- Victron Smart Battery Sense (wireless battery voltage and temperature sensing — recommended)
- Victron BMV-712 Smart (battery monitor with wireless voltage and temperature sensing)
VE.Smart Network Pairing:
- Pair multiple Phoenix Smart IP43 chargers for synchronised multi-charger operation and shared sensing data
System Integration:
- Victron Cerbo GX (via VE.Direct — system monitoring and VRM portal)
- Victron SmartShunt or BMV-712 (battery bank monitoring)
- Victron VictronConnect app (free — iOS and Android)
Weight
4.0 kg
Frequently Asked Questions
How does external Bluetooth voltage sensing improve charging accuracy?
Without external sensing, the charger measures voltage at its own output terminals — which may be higher than the actual battery voltage due to cable resistance, especially under high current. A Smart Battery Sense or BMV-712 Smart measures voltage directly at the battery terminals and wirelessly communicates it to the charger, allowing it to use the true battery voltage for charge stage decisions. The result is more accurate Absorption and Float transitions and genuinely correct charge delivery to the battery.
What is BatterySafe mode and when does it activate?
BatterySafe activates when a high charge current is combined with a high absorption voltage setting, and the battery approaches its gassing voltage threshold. It automatically limits the rate of voltage rise to prevent excessive gassing that would damage plates and deplete electrolyte. At 50A, the risk of gassing-related damage is elevated compared to lower-current chargers — BatterySafe is an important protection at this output level.
Can I connect a lithium BMS to control this charger?
Yes. Connect the BMS relay or open-collector optocoupler output to the H/L remote on/off terminals. When the BMS signals that charging should stop, it opens the remote circuit, disabling the charger. Full charge voltage and current control is also achievable via Bluetooth for advanced integration scenarios.
What does the Refresh stage do in the 6-stage algorithm?
Refresh re-activates a full charge cycle on a battery that has been in Storage Mode — returning it to 100% state of charge from the reduced Storage float voltage. It activates based on time or voltage conditions defined in the algorithm, ensuring a battery that has been held at reduced Storage voltage is periodically brought back to full charge. This prevents the gradual capacity drift that can occur if a battery is maintained at reduced voltage without a periodic full recharge.
Can two Phoenix Smart IP43 chargers be synchronised on the same battery bank?
Yes. Pairing two or more Phoenix Smart IP43 chargers in a VE.Smart Network synchronises their charge stage transitions — all units move from Bulk to Absorption and from Absorption to Float simultaneously. Shared external sensing data from a Smart Battery Sense or BMV-712 Smart can also be distributed across the network, so all chargers use the same accurate battery voltage and temperature data for their charging decisions.
