Victron Skylla-i 24v Battery Chargers

A modern and powerful battery charger. 

Key Features

• The right amount of charge for a lead-acid battery: variable absorption time
• BatterySafe mode: preventing damage due to excessive gassing
• Storage mode: less maintenance and aging when the battery is not in use
• Smaller and lighter compared to similar models
• NMEA 2000 Canbus connection
• PowerControl: set a maximum shore power
• Remote Control
• Li-ion (LiFePo4) ready

Description 

Skylla-i (1+1): two outputs to charge 2 battery banks
The Skylla-i (1+1) features 2 isolated outputs. The second output, limited to approximately 4A and with a
slightly lower output voltage, is intended to top up a starter battery.

Skylla-i (3): three full current outputs to charge 3 battery banks
The Skylla-i (3) features 3 isolated outputs. All outputs can supply the full rated output current.

Rugged
Aluminium epoxy powder coated cases with drip shield and stainless steel fixings withstand the rigors of
an adverse environment: heat, humidity and salt air.
Circuit boards are protected with an acrylic coating for maximum corrosion resistance.
Temperature sensors ensure that power components will always operate within specified limits, if needed
by automatic reduction of output current under extreme environmental conditions.

Flexible
Next to a CAN bus (NMEA2000) interface, a rotary switch, DIP switches and potentiometers are available to
adapt the charge algorithm to a particular battery and its conditions of use.
Please refer to the manual for a complete overview of the possibilities.

Important features:

Synchronised parallel operation
Several chargers can be synchronised with the CAN bus interface. This is achieved by simply
interconnecting the chargers with RJ45 UTP-cables. Note: Two output and three output chargers cannot be
paralleled with each other. Please see the manual for details.

The right amount of charge for a lead-acid battery: variable absorption time
When only shallow discharges occur the absorption time is kept short in order to prevent overcharging of
the battery. After a deep discharge the absorption time is automatically increased to make sure that the
battery is completely recharged.

Preventing damage due to excessive gassing: the BatterySafe mode
If, in order to quickly charge a battery, a high charge current in combination with a high absorption voltage
has been chosen, the Skylla-i will prevent damage due to excessive gassing by automatically limiting the
rate of voltage increase once the gassing voltage has been reached.

Less maintenance and aging when the battery is not in use: the Storage mode
The storage mode kicks in whenever the battery has not been subjected to discharge during 24 hours. In
the storage mode float voltage is reduced to 2,2V/cell (26,4V for 24V battery) to minimise gassing and
corrosion of the positive plates. Once a week the voltage is raised back to the absorption level to ‘refresh’
the battery. This feature prevents stratification of the electrolyte and sulphation, a major cause of early
battery failure.

To increase battery life: temperature compensation
Every Skylla-i comes with a battery temperature sensor. When connected, charge voltage will automatically
decrease with increasing battery temperature. This feature is especially recommended for sealed lead-acid
batteries and/or when important fluctuations of battery temperature are expected.

Battery voltage sense
In order to compensate for voltage loss due to cable resistance, the Skylla-i is provided with a voltage
sense facility so that the battery always receives the correct charge voltage.

Suitable for AC and DC supply (AC-DC and DC-DC operation)
The chargers also accept a DC supply.

Use as a power supply
As a result of the perfectly stabilized output voltage, the Skylla-i can be used as a power supply if batteries
or large buffer capacitors are not available.

Li-Ion (LiFePO4) ready
Simple charger on-off control can be implemented by connecting a relay or open collector optocoupler
output from a Li-Ion BMS to the remote control port of the charger. Alternatively complete control of
voltage and current can be achieved by connecting to the galvanically isolated CAN bus port.

Victron Skylla-i 24v Battery Charger Datasheet