Victron Skylla-IP65 12/70(1+1) 120-240V 12V 70A Battery Charger

The Victron Energy Skylla-IP65 12/70(1+1) 120-240V (MPN: SKY012070000) is a high-performance 12-V battery charger with a charging current of up to 70 A at the main output. An additional 3-A output is used for trickle charging a separate starter battery. With an adaptive seven-stage charging algorithm, lithium-ion charging mode, temperature and voltage compensation, and a VE.Can interface, the charger is designed for demanding battery and energy systems. The rugged steel housing with IP65 protection rating allows for use even under challenging environmental conditions.

70-A battery charger with additional starter battery output

• 70 A charging current for 12-V battery banks
• Additional 3-A output for trickle charging a starter battery
• Recommended battery capacity: 350 to 700 Ah
• Seven-stage adaptive charging algorithm
• Separate three-stage charging algorithm for lithium-ion batteries
• Universal AC input range from 90 to 265 V
• Temperature and voltage compensation for battery charging
• VE.Can with two RJ45 connectors
• Synchronized parallel operation of multiple chargers possible
• Can also be used as a regulated power supply
• Protection against battery reverse polarity, output short circuit, and overtemperature
• Robust steel housing with IP65 protection rating

Main output and separate connection for the starter battery

The 1+1 version of the Skylla-IP65 features two outputs for different purposes. The main output provides a charging current of up to 70 A for the connected 12-V battery bank. Additionally, there is an output limited to 3 A, which is intended to maintain the charge of a separate starter battery.

This allows, for example, a larger service battery bank and a starter battery to be charged using the same charger. Victron specifies a recommended battery capacity of 350 to 700 Ah for the main output.

Adaptive Seven-Stage Charging Algorithm

For battery charging, the Skylla-IP65 uses a seven-stage adaptive charging algorithm. This adjusts the charging process to the battery’s current state or its previous discharge level. After a slight discharge, the constant-voltage phase is correspondingly shorter, while it is extended after a more significant discharge.

The integrated BatterySafe mode limits the voltage rise as soon as the gassing voltage is reached. This protects the battery against excessive gas buildup toward the end of the constant-current phase.

Storage Mode for Extended Periods of Inactivity

If the battery is not discharged for an extended period, the charger reduces the voltage in storage mode. For the 12-V model, the storage charging voltage is 13.2 V. This reduces gas evolution and corrosion on the positive plates during extended periods of inactivity.

The voltage is raised again at regular intervals to counteract electrolyte stratification and sulfation.

Temperature and Voltage Compensation

The Skylla-IP65 includes a battery temperature sensor. Based on the measured battery temperature, the charger can adjust the charging voltage accordingly. If the temperature rises, the charging voltage is reduced.

In addition, the charger supports battery voltage measurement to compensate for voltage losses in the wiring. This allows the actual voltage across the battery to be taken into account during charge control.

Charging Mode for Lithium-Ion Batteries

In addition to the adaptive charging algorithm, a three-stage charging algorithm is available for lithium-ion batteries. Control can be performed via the remote control port or the CAN bus connection. This allows the charger to be integrated into appropriately designed battery systems with a BMS.

For specific combinations with a lithium battery, the specifications provided by the battery and BMS manufacturers must be followed.

VE.Can and Synchronized Parallel Operation

For system communication, the Skylla-IP65 features two RJ45 ports for VE.Can. Victron specifies NMEA2000 as the protocol. Using VE.Can, multiple compatible Skylla-IP65 chargers can be connected to each other and operated in synchronized parallel mode.

This allows the charging capacity to be expanded using multiple units in appropriately designed systems. Additionally, the charger can be integrated into other Victron system components and monitoring solutions.

IP65 Enclosure for Demanding Operating Conditions

The charger features an epoxy powder-coated steel housing with an IP65 rating. The circuit boards are additionally protected against corrosion. This makes the Skylla IP65 series suitable for applications where moisture, dust, or salty air may be present.

Cooling is provided by an internal air circulation system with external cooling. Full output current is available up to an ambient temperature of +40 °C. At higher temperatures, the charger may reduce its output power to keep the power electronics within the specified temperature limits.

Can Also Be Used as a Stabilized Power Supply

In addition to battery charging, the Skylla-IP65 can be used as a power supply with a stabilized output voltage. In the 12-V version, the output voltage can be adjusted within a range of 10 to 16 V. This makes the device suitable for appropriately designed DC applications that require a stabilized power supply.

Technical Specifications

• Manufacturer: Victron Energy
• Model: Skylla-IP65 12/70(1+1) 120-240V
• MPN: SKY012070000
• Nominal Battery Voltage: 12 V
• Input voltage: 120 / 230 V AC
• Input voltage range: 90–265 V AC
• Frequency: 45–65 Hz
• Max. input current at 100 V AC: 12 A
• Power factor: 0.98
• Constant charging voltage: 14.4 V
• Trickle charging voltage: 13.8 V
• Storage charging voltage: 13.2 V
• Output voltage range: 10–16 V
• Main output charging current: 70 A
• Charging current for starter battery: 3 A
• Recommended battery capacity: 350–700 Ah

• Charging algorithm: Seven-stage, adaptive
• Lithium-ion charging algorithm: Three-stage
• Temperature sensor: Yes
• Use as a power supply: Yes
• Remote On/Off Control: Yes
• CAN bus interface: VE.Can
• VE.Can Connectors: 2 × RJ45
• Protocol: NMEA2000
• VE.Can galvanically isolated: No
• Synchronized parallel operation: Yes, via VE.Can

• Alarm relay: DPST
• AC alarm relay: 240 V AC / 4 A
• DC alarm relay: 4 A up to 35 V DC / 1 A up to 60 V DC
• Protection functions: Battery reverse polarity via fuse, output short circuit, overtemperature
• Battery connection: M6 bolt
• AC connection: Screw terminal for 6 mm² / AWG 10

• Cooling: Forced air cooling with internal air circulation
• Operating temperature: -20 to +60 °C
• Full output current: up to +40 °C
• Relative humidity: max. 95%, non-condensing
• Housing material: Steel
• Housing color: Blue, RAL 5012
• Protection rating: IP65
• Dimensions (H × W × D): 401 × 265 × 151 mm
• Weight: 6 kg

• Safety: EN 60335-1, EN 60335-2-29
• Emission: EN 55014-1, EN 61000-6-3, EN 61000-3-2
• Immunity: EN 55014-2, EN 61000-6-1, EN 61000-6-2, EN 61000-3-3

Package Contents

1 × Victron Energy Skylla-IP65 12/70(1+1) 120-240V battery charger
1 × Battery Temperature Sensor