Mercedes-Benz W204 battery: is it AGM and what size fits
C220 CDIC200 CDIC250 CDI
Is the W204's battery an AGM type?
According to the spare parts data, the original battery is an AGM type (VRLA, valve-regulated lead-acid battery). Still, check your own car's battery type from the parts data before replacing it, because equipment affects it.
Why does the battery type matter on the W204?
The car's charging voltage is high for a lead-acid battery, so a battery of the wrong type may last a shorter time. Check the correct charging voltage from the manufacturer's data, as the sources conflict on this.
What battery size fits the W204 and does a new battery need coding?
Battery size varies with equipment, so check it from the parts data and measure the battery compartment. If the whole battery is replaced, it does not need coding. A battery tester gives a reliable result only on a fully charged battery.
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