Victron Skylla-i 24/80 (3) 230V battery charger 80A 24V (3)

Victron Skylla-i Battery Charger for 24V Batteries

Skylla-i (3): three full-power outputs for charging 3 battery banks.
The Skylla-i (3) has 3 separate outputs. All outputs can deliver the full rated output current.
The charging voltage can be precisely adjusted to any battery system. The charger input is 230 V at 50/60 Hz.
The charging voltage can be measured directly at the battery terminals to compensate for voltage drop due to cable resistance. An external sensor allows for measuring the battery temperature and correspondingly compensating the charging voltage.

Less maintenance and aging when the battery is idle: the storage mode
The storage mode is activated whenever no discharge has occurred within 24 hours. In storage mode, the float charge voltage is reduced to 2.2 V/cell (26.4 V for a 24 V battery) to minimize gassing and corrosion of the positive plates.
Once a week, the voltage is increased back to the constant voltage threshold to 'refresh' the battery. This achieves a kind of equalization charge that prevents electrolyte stratification and sulfation - the two main reasons for premature battery failure.

Robust
The epoxy powder-coated aluminum enclosure with drip protection and stainless steel brackets withstands even the harshest environmental conditions: heat, moisture, and salt-laden air. An acrylic coating protects the circuit boards as best as possible against corrosion.
Temperature sensors ensure that the power components are always operated within the specified limits. Under extreme environmental conditions, the output current is automatically reduced if necessary.

Prevention of damage from excessive gassing: battery protection mode
To shorten the charging time, the highest possible charging current in combination with a high constant voltage is aimed for. However, to prevent excessive gassing towards the end of the constant current phase, the Skylla-i limits the rate of voltage rise after the gassing voltage has been reached.

Suitable for lithium-ion batteries (LiFePo4)
A simple on/off control can be installed by connecting a relay or an open-collector optocoupler output from a Li-Ion BMS to the remote control connection of the charger.
Alternatively, voltage and current can be fully controlled by establishing a connection to the galvanically isolated CAN bus connection.

Battery voltage sensor
To compensate for voltage drops due to cable resistance, the Skylla-i has a voltage sensor in the charging circuit, so that the battery always receives the correct charging current.

Use as a power supply
Due to the perfectly stabilized output voltage, the Skylla-i can be used as a power supply when no batteries or large buffer capacitors are available.

Technical data