Charging Car's Stop...
 

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Charging Car's Stop-Start Battery

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 Joe
Posts: 1705
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My Berlingo battery is dead flat this morning after the car sitting on the drive for 6 weeks. The battery is dead dead and couldn't jump start it this morning...I suspect the battery needs replacing but am going to give it a charge.

I've noticed that most battery chargers say that they are unsuitable for batteries that are specced for stop-start and my berlingo has this function...

I don't really understand...what is the difference between a stop/start battery and a normal one in terms of charging it?

R


 
Posted : 29/11/2024 8:51 am
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The three letter acronyms (EFB and AGM) mean a smart charger is needed. Constant charge from a less smart charger causes problems


 
Posted : 29/11/2024 8:59 am
 mert
Posts: 3831
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Could also be referring to support batteries.


 
Posted : 29/11/2024 9:05 am
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Does it have more than one battery? Our V70 had a hidden AGM battery for stop start and a big starter battery. I bought a charger in lockdown and it is smart enough to know what battery you have it plugged into and how to best charge it.


 
Posted : 29/11/2024 9:22 am
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Just a thought, you'll probably find a BF deal, e.g. CTEK CT5 on Amazon if that suits


 
Posted : 29/11/2024 9:58 am
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A word of warning if buying a smart charger for this.  Not all of them will charge a completely dead battery. I borrowed a CTEK from work when mine died and it wouldn't do it. I had to hook it up to a dumb charger for a few hours to get some volts showing, then the CTEK worked & went through its repair cycle.


 
Posted : 29/11/2024 10:01 am
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Oo oo, please Sir, may I ask a supplementary question?

I understand the big battery does the stop/start and the little battery keeps things (systems) going during stop/start. When the 'stop/start battery needs maintenance' warning comes up (cos its been stood for weeks),  it's actually (usually) the big battery that's ****ed even though we think of the little battery as the stop/start one.

Does that make sense?


 
Posted : 29/11/2024 12:56 pm

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