w220 battery

[sean.ie]

just a quickie , 2001 s320cdi goes through batteries like clockwork every 30 months , is this normal?

 

[eGuru]

I replaced the original battery after 8 years of daily use.

 

[M6AJJ]

My 2000 lasted for ten years.

 

[StuggyZX10]

check your output on the regulator on the alternator may be higher than normal, but a battery should last more than a couple of years

 

[s500colin]

Don't most batteries have a longer warranty period than 30 months.
I think the battery on my S class is about 4 years old and still in perfect working order

 

[television]

You need to check the charging voltage, should be around 14 volts with engine running, cheap own make/label batteries are hit and miss