C4 grand Picasso battery

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wheeler
Posts: 7893
Joined: 21 Sep 2002, 19:07
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Re: C4 grand Picasso battery

Unread post by wheeler »

Yuasa are saying this>
FootnoteOE has switched from using AGM to EFB during the lifetime of this model. Fit to match current fitment.Note 1OE battery is EFB. Only replace with EFB batteryNote 2Check installation, multiple battery options.


AGM is an upgrade from EFB anyway so yes i would go AGM
I
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Adam1984
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Joined: 10 Sep 2025, 18:20
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Re: C4 grand Picasso battery

Unread post by Adam1984 »

Hello,

I currently have an EFB battery 700amps that I need to replace, with a new battery, so you saying during the cycle of the car the battery model for my vehicle has changed and now needs an AGM instead?

Thanks
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Paul-R
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Re: C4 grand Picasso battery

Unread post by Paul-R »

No, he's saying that during the time that the vehicle was in production the type of battery that was fitted from the factory changed from AGM to EFB. And that the same type of battery should then be used as a replacement.

However, as Wheeler (and everybody else) says an AGM battery is an upgrade. But that a session with diagnostic machine would be needed to set the option correctly in the car.
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Adam1984
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Joined: 10 Sep 2025, 18:20
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Re: C4 grand Picasso battery

Unread post by Adam1984 »

So to replace the battery now.

Get an EFB, as I don't have diagnostics to upgrade the battery to AGM, and don't have the time to leave the car for a few days for it to settle.
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Paul-R
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Re: C4 grand Picasso battery

Unread post by Paul-R »

Adam1984 wrote: 22 Sep 2025, 15:50... leave the car for a few days for it to settle.
That's part of the process for any new battery. This will take a few days to learn while driving. You don't have to leave the car alone.
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson
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PaulC5
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Re: C4 grand Picasso battery

Unread post by PaulC5 »

If you do change the battery do not be too quick to disconnect it and also to reconnect it since you need to leave time for the bsi to shut down or you could end up with odd electrical problems. There is a bsi reset procedure you can follow in this topic viewtopic.php?f=51&t=61997&p=601679#p601679
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