Converters and Power Supplies for the Communications, Automotive & Marine Industries



While many applications can be supplied using a standard voltage converter or stabiliser, sometimes there can be a requirement to charge one DC battery from another in order to provide independent power. The Alfatronix range of DC-DC chargers are based on the very successful PowerVerter range but configured to offer a four stage charging program that will ensure that batteries are charged to a maximum capacity providing long term reliable power. These products come with many of the same safety and protection features as the PowerVerters, but are also additionally designed to detect faulty batteries and dead cells. They will also ensure that they will not operate unless the source battery is attached to a charging source such as a vehicle alternator or mains unit. In this way, you can ensure that the charger will not allow unintentional draining of the source battery.

ICi24 12 144


These intelligent battery chargers operate a four stage charging cycle. The first stage monitors the battery to establish that the battery is in good condition before starting the three stage process. This feature is of key importance in ensuring that faulty batteries are not inadvertently charged causing overheating and potential system failure. The units are also reverse polarity protected and when re-connected correctly will operate normally without reset. The Alfatronix three point mounting cradle is also supplied for fast and easy installation.


Part Number Cont/Int Power Input Voltage Dimensions (mm) Weight (g)
ICi24-12 144 12A Isolated 24Vdc input, 12Vdc output (variable charge voltage) 167 x 87 x 50 600
ICi24-24 144 6A Isolated 24Vdc input, 24Vdc output (variable charge voltage) 167 x 87 x 50 600
ICi12-12 072 6A Isolated 12Vdc input, 12Vdc output (variable charge voltage) 167 x 87 x 50 600
ICi12-24 072 3A Isolated 12Vdc input, 24Vdc output (variable charge voltage) 167 x 87 x 50 600
Other output voltage configurations are available as special orders, please ask our sales team


Input voltage range 24-32Vdc, 12-16Vdc. Configured to prevent depletion of source battery.
Output voltage 12V or 24V nominal through the intelligent battery charging curve. Please see charge graph for further
Transient voltage protection Meets ISO7637-2 International standard for 24Vdc commercial vehicles
Electrostatic voltage protection Meets ISO10605, >8kV contact, 15kV discharge
Output noise <50mV pk-pk (100mV on 24V units) at continuous load. Meets CISPR25.
Off load current (quiescent current) Typically <5mA. Unit will shut down when source battery is not being charged.
Power conversion efficiency Typically 85%
Isolation >400Vrms between input, output and case, on isolated products only
Operating temperature -25ºC to +30ºC to meet this specification table
+30ºC to +80ºC de rate linearly to 0A
Storage temperature -25ºC to +100ºC
Operating humidity 95% max., non-condensing
Casework Anodised aluminium, glass filled polycarbonate, dust water and impact resistance to IP533.
Connections Five 6.3mm push on flat blade connectors 
Output indicator Multicolour LED adjacent to output terminals indicating power and charging mode
Mounting method ‘Click ‘n' fit mounting clip, fitted separately using 3 hole fixing 
Safe area protection: Over current   Limited by current sensing circuit
Over heat Limited by temperature sensing circuit
Transients Protected by filters and rugged component selection
Catastrophic failure Protected by internal input and output fuses
Approvals 2014/30/EU The general EMC directive
Regulation 10 The automotive directive
93/68/EEC The CE marking directive
Designed to  EN50498, EN55022, ISO 7637-2, EN61204-3
Markings CE and E marked