Cybernetica AS
  Department of Navigation Systems

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Optimizing Battery Charger E147

Usable lifetime and capacity of a secondary battery used in power supply systems of marine aids to navigation depends on the actual operational conditions and, in particular, on the charging process. To achieve the maximum usable lifetime, the charging system has to maintain the batteries as fully charged as possible while not overcharging them. Overcharging would result in boiling out of the electrolyte, damaging the batteries.

Cybernetica AS has applied special efforts to find  the most efficient methods of charging the AtoN batteries. As  a result, the  optimizing AtoN Battery Charger E147 was developed. The purpose of the charger is to guarantee continuous energy supply of autonomous and local AtoN site systems powered from 220 V/50 Hz utility power and charging in buffering mode the lead acid or gel based batteries with a parallel fluctuating load of up to 100 W. Operation of the system is allowed even with the battery disconnected. When optimizing the  charging process the type, nominal voltage, capacity, and the charge factor of the battery as well as temperature of the ambient air are taken into the consideration. The optimization algorithm is executed by a programmable microcontroller. The charger is ready for integration into a remote control and monitoring system for full utilization of its diagnostics capabilities.


  • charging of lead or gel batteries of nominal voltage from 12 up to 18 V in buffering mode, simultaneously supplying power to a parallel load of up to 100W.  The voltage converter of the charger follows the voltage of the battery and optimizes the charging process. The charge factor will be determined by a microcontroller measuring the current, voltage, and temperature of the battery
  • periodical checking discharges and high-current formation of the battery to be initialized either locally by the maintenance  software or remotely by the control and monitoring  system
  • heating of the battery when battery temperature drops below a pre-programmed value (16°C  by default)
  • maintaining the output voltage of the charger on the “holding level” of the battery while operating without a battery connected
  • sending of emergency and diagnostic messages to the control and monitoring system regarding the the mains voltage, state of the battery, temperature,  and  presence of the battery
  • storing of statistical data about the last 16 discontinuities of the mains voltage supply, and about the last 8 changes of battery state
Picture of Charger E147  


Parameter Value
Power source  
 230 V AC 50Hz utility power
Voltage of lead or gel battery
 from 12 to 18 VDC
Battery charge current
 10 A maximum
Battery formation load current
 15A maximum
Mode of operation 
 battery charging in buffer mode with simultaneous parallel dynamic load of up to
 100 W, or operation without a battery
Power consumption of battery heating mat
 up to 240W
Ambient air temperature
 from -30°C to +50°C (IEC 60068-2-1 IEC 60068-2-2)
Relative humidity 
 up to 98% at temperature +35°C (IEC 60068-2-30)
Operation in conditions of salt mist
 allowed (IEC 60068-2-52)
Mechanical vibration
 10 to 500Hz with acceleration up to 2,2 g (IEC 60945 section 8.7)
Ingress protection
 The charger should be housed within a cabinet with ingress protection at least to IP64
 (IEC 60529)

Layout and dimensions of E147
Layout and dimensions of the optimizing charger E147

Download the E147 catalogue page in Adobe pdf format.

Please do not hesitate to contact us for more information and price quiotations. We may also be able to offer product customization and design services to accommodate your unique requirements.

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© 2002-2013 Cybernetica AS. Last updated 2013-08-07