Battery charger which counters sulphation introduced

CBE has produced a switch-mode battery charger, the CB516/3, which has been developed to charge 12V batteries and represents the natural evolution of CB516, a CBE bestseller with more than 25,000 units sold annually. This new-generation model – with its 16A maximum current supply – is capable of an even more efficient charge not only of lead-acid and lead-gel batteries (as its predecessor did), it also – thanks to appropriate hardware and software modifications – permits an optimal charge of AGM batteries. The charging process is completely automatic, with different voltage and current values according to the position set using the internal selector and it has no fewer than six phases rather than the previous four, with the introduction of the new desulphation and refresh functions.

Phase 1 – Desulphation – takes place only when the battery charger is switched on and only if the battery requires it (the purpose, obviously, is to counter sulphation, a process that may occur on service batteries installed on recreational vehicles precisely because of their particular use). 

Phase 2 – Bulk – charges the battery with maximum current until the end-of-charge voltage is reached. Phase 3, called Absorption, involves completing battery charging with a constant end-of-charge voltage for a set time and with a progressive current reduction. Phase 4 – Float – is a maintenance charging at a constant voltage for a set maximum duration. The following phase 5 – called Stand-by – involves a controlled switching off of the battery charger, which – once charging is completed – resumes operation only when the battery voltage drops below 13V. The reason is clear: limiting the “stress” on the battery to increase its operating life and improve its efficiency. When the battery voltage drops below 13V, the battery charger switches over to phase 6 – Refresh – which sees the Bulk voltage for the time necessary to compensate for the self-discharge of the battery during possible prolonged periods of inactivity. The charging cycle then resumes from the Float phase.


The CB516/3 battery charger – as with all CBE switch-mode battery chargers – features overheating protection and the 12V outputs are protected against short circuits and polarity inversion. The dimensions, weights and electrical connections of the CB516/3 do not change with respect to the previous model (in order to facilitate product changeover for CBE’s OEM customers willing to do so).

There is an attractive option for those who use recreational vehicles in extreme climates: a temperature sensor (to be placed near the battery) can be connected to the CB516/3 in order to increase or decrease the charging values depending on the temperature detected, so as to optimise the charging process still further.

With this new battery charger, CBE will offer the OEM market a product that is not only updated in terms of technological content but also enhanced with some innovative functions, the ultimate purpose of which is to further improve both the efficiency and the life of batteries.

Mass production of the CB516/3 will begin in Q4/2016 and will be fully operational by Q2/2017. 


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