Guide: Battery Chargers and EFB, Calcium, AGM and Gel batteries; Recon, Sulphation and Stratification explained

In a global pandemic car battery chargers are proving to be handy tools for those who aren’t using their car anywhere near as much as they used to. But with the proliferation of different battery types, start/stop and hybrid battery systems we have seen in recent times, do you know the correct way to charge your car to maximise the life of the battery and prevent damage?

I have posted a number of questions to CTEK customer support over the last couple of years in regards to using my charger on different battery types (the user guide is light on info). Info on the web is also lacking, or sometimes incorrect (many car forums carry inaccurate info). So I compiled this guide as a personal reference and to help others. Whilst it is written primarily for the CTEK MXS range of car battery chargers, much of the information will still be relevant for most other types of charger.

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