Skylla-i 24V 80A 230V Battery Charger

The Victron Energy Skylla-i 24V 80A 230V battery charger is an advanced marine charger. It delivers a main charge current of 80A at 24V and features a 230V AC input. This model includes two isolated outputs, a 7-step adaptive charging algorithm for lead-acid batteries, and a 3-step specific algorithm for Li-ion (LiFePO4) batteries. It integrates protection functions such as BatterySafe mode and Storage mode, as well as temperature compensation.

Yes, the Skylla-i charger is designed to withstand harsh marine environments. Its housing is made of powder-coated epoxy aluminum with a drip shield and stainless steel fasteners. The circuit boards are protected by an acrylic coating for maximum resistance to corrosion, heat, humidity, and salt air.

The Skylla-i charger is compatible with a wide range of batteries. It uses a 7-stage adaptive charging algorithm for lead-acid batteries (including flooded, gel, and AGM types) and a specific 3-stage algorithm for Li-ion (LiFePO4) batteries.

The 7-step adaptive charging algorithm automatically adjusts absorption time based on battery depth of discharge. This prevents overcharging in shallow discharges and ensures full recharge after deep discharge, optimizing battery lifespan.

The BatterySafe mode is a protective function that prevents damage from excessive gas release. If a high charging current is combined with a high absorption voltage for fast charging, the Skylla-i automatically limits the rate of voltage increase once the gassing voltage is reached.

The Storage mode activates when the battery has not been discharged for 24 hours. In this mode, the float voltage is reduced to 26.4V (for a 24V battery) to minimize gassing and corrosion of the positive plates. Once per week, the voltage is raised to the absorption level to 'refresh' the battery, preventing electrolyte stratification and sulfation.

Yes, every Skylla-i charger comes with a battery temperature sensor. When connected, the charging voltage automatically decreases as the battery temperature rises. This function is particularly recommended for sealed lead-acid batteries and/or in cases of significant battery temperature fluctuations.

Yes, thanks to its perfectly stabilized output voltage, the Skylla-i charger can be used as a power supply if batteries or large buffer capacitors are unavailable.

The nominal input voltage for this charger is 230V AC. It can operate within an AC input voltage range of 185V to 265V. It also accepts a DC input voltage from 180V to 350V.

The dimensions of the Skylla-i 24V 80A charger are 405 mm (height) x 250 mm (width) x 150 mm (depth). Its weight is 7 kg.

The Victron Energy Skylla-i 24V 80A 230V charger has an IP21 protection rating. This means it is protected against solid objects larger than 12.5 mm and against vertically falling water droplets.

Yes, the Skylla-i charger is compatible with Li-ion (LiFePO4) batteries. It features a specific 3-stage charging algorithm and allows for on/off control or via the CAN bus, particularly when connected to a Li-ion battery management system (BMS).

Yes, the Skylla-i charger is equipped with a CAN bus interface (VE.Can) that is compatible with the NMEA2000 protocol. It can be connected to an NMEA2000 network using a VE.Can to NMEA2000 accessory cable.

Yes, multiple Skylla-i chargers can be synchronized via the CAN bus interface. Simply interconnect the chargers with UTP RJ45 cables. Bus terminators are required at the ends of the VE.Can network.

The remote control port of the Skylla-i charger can be connected to the 'charge disconnect' output of a Li-ion BMS, such as the Victron Energy VE.Bus BMS, using a specific cable. Full integration with voltage and current monitoring can also be achieved via the galvanically isolated CAN bus port.

This specific model, the Skylla-i 24V 80A (reference SKI024080000), is a (1+1) model. It has two isolated outputs: a main output of 80A and a secondary output limited to approximately 4A, intended for the starter battery.

To connect the batteries, follow these steps:

Disconnect the charger from the mains power. Disconnect the battery cables from the battery itself. Remove the charger's front cover. Connect the battery cables to the M8 terminals on the charger (Main battery plus/minus, Starter battery plus if applicable). Then connect the battery cables to the battery terminals. Never reverse the polarity of the batteries, as the Skylla-i is not protected against reverse polarity.

For the Skylla-i 24/80 (1+1) model, the recommended cable cross-sections for the main battery are:

Up to 1.5 m length: 25 mm²From 1.5 m to 6 m length: 35 mm²The starter battery cable must have a cross-section of at least 2.5 mm².

The Skylla-i charger must be installed in a dry and well-ventilated location. Wall mounting is recommended as it improves airflow inside the charger’s housing, thereby extending its lifespan. Ensure the cable length between the charger and the battery is less than 6 meters.

External voltage sensing compensates for voltage drop caused by cable resistance, ensuring the battery always receives the correct charging voltage. To enable it, connect a red wire (0.75 mm²) between the battery’s positive terminal and the '+ Voltage sensor' connector on the charger, and a black wire (0.75 mm²) between the battery’s negative terminal and the '- Voltage sensor' connector.