Moll battery - result

[Oldrat]

My T6 warranty expires in two weeks time.

I’ve just had a service and had a pre end of warranty check. Everything was fine but my Moll battery ( and subject of much info on here) which has been a bit suspect for a while was replaced FOC under warranty.
Lessons
1. Always have a pre end of warranty check
2. Ditch the Moll

 

[sparkzer]

mine will be out in sept...and also have a dodgy Moll...plan on doing exactly the same!

 

[Andysharp]

I had my dodgy moll checked out at Vw Preston they claimed it passed all their tests warranty runs out in July battery still dodgy, should I just replace it or wait and see if they find fault at pre warranty check?

 

[Dellmassive]

I had my dodgy moll checked out at Vw Preston they claimed it passed all their tests warranty runs out in July battery still dodgy, should I just replace it or wait and see if they find fault at pre warranty check?

What makes you think is dodgy? (If they say it passed)

 

[Andysharp]

What makes you think is dodgy? (If they say it passed)

It does not hold charge flat after 5/6 days

 

[Andysharp]

It does not hold charge flat after 5/6 days

Also I have milenco battery charger that does a maintain test and it says it’s not maitaining

 

[Oldrat]

Get it checked out independently before the warranty expires. Upon reflection, mine was showing signs of not holding a charge for the last year or so. If it’s a problem now, then it isn’t going to get any better.

 

[Andysharp]

Get it checked out independently before the warranty expires. Upon reflection, mine was showing signs of not holding a charge for the last year or so. If it’s a problem now, then it isn’t going to get any better.

Thanks for that

 

[RichDavies82]

I have a Moll battery and I’ve not had an issue with it. I can leave the van 2-3 months and it turn over straight away.

 

[Andysharp]

Update van had end of warranty check yesterday changed battery.Result happy days

 

[Shaun Witts]

I’ve just had my van serviced at VW Preston. I asked them to check the Moll battery because it was reading 11.6v within 3-4 days of last being used. I did point out that it had never let me down (but my TSI is probably easier to start than a diesel).
Pleased to say that they found it defective and replaced it under warranty and also checked for an erroneous drain, either by the van or the conversion electronics, but all was OK.

 

[Shaun Witts]

Well I hope that the Moll batteries have improved, because that’s what the replacement is...

 

[Dellmassive]

whats going on with those whites?

they should be on a chassis ground and not direct across the battery.

can we see another pic with the flap up?

 

[Dellmassive]

looks .like the similar battery as they gave me in 2018 . . . . (my factory AUX battery)

but mine was a VARTA EFB+ 000 915 105 FC

They said they had to change like for like?

Stop/start...regen...smart Alternator... Dc-dc Charger For Leisure Battery Or Not?

Looks like i might be getting somewhere with all this split-charging and DC-DC charging issue. As we see from my results above, something just wasn't adding up. MMi`s results were showing both batteries were balanced and showed a good SOC . . . . . . so why wasnt mine? and why was mine so far...

www.t6forum.com

 

[Shaun Witts]

whats going on with those whites?

they should be on a chassis ground and not direct across the battery.

can we see another pic with the flap up?

Those circled “white” wires are part of the PF Jones towbar harness, connected as per the instructions I believe.
Why should they be to chassis?

 

[Dellmassive]

yeh, 100% defo,

we've had this with other members . . .

basically the vans "power management system" wont account for any power thats drawn by that tow bar kit.

and can lead to messed up battery charging and a flat battery.

it's an easy fix, just move to chassis ground, or fit a chassis ground busbar . . .

****
The manufacturers install guide is correct for NON-STOP/START cars/vans.

On stop/start like the T6, ALL -ve/0ve/grounds must go to the chassis ground and NOT go direct to the battery.

This is so the battery monitor can correctly monitor the power in/out.

its called "bridging out the monitor" and should not be done . . .

the cover gives an indication to this issue to . . . . . about NOT connecting battery chargers to the battery NEG post, but to use a body ground instead!







My issue with this is the VW have NOT provided a ground post near to the battery for this purpose (like most other manufactures do)

more info on it here:

Battery Charging - Main Battery Chassis Point -

Battery Charging - Main Battery Earth Point - so weve all be told NOT to bridge out the battery monitor on the neg side of the battery when charging it. This is so the ECM can correctly gauge the SOC (state of charge) of the starter battery by monitoring the current flow in and out of the...

www.t6forum.com

Battery Chargers - How I Did It -

Battery Chargers - How I Did It - So its that time of year again, cold, rainy. . . . . . . flat battery =[ This time we look at Battery Chargers. Our vans will most likely come with a AGM style starter battery, for this type of battery we need a "Smart Charger" . . . . but what does this...

www.t6forum.com

Which Jump Starter?

Advice required. Hi guys - I thought it would be prudent to carry one of those small JumpStarter powerpacks about with me as I have an electric lift seat installed for my better half and am a little concerned that with the extra demands on the van battery I might get caught out one wintery...

www.t6forum.com

FYI, this is the battery power monitor:

 

[Pete C]

I have those same white wires on my PF Jones towbar installation. They are bolted to ground on the right of the battery by the bonnet hinge bracket.
Should be easy to move them there by the look of things.

Pete

 

[Dellmassive]

would that be like this @Pete C ?






....



Thats the position i use for my ground BusBar too . . .

 

[Shaun Witts]

yeh, 100% defo,

we've had this with other members . . .

basically the vans "power management system" wont account for any power thats drawn by that tow bar kit.

and can lead to messed up battery charging and a flat battery.

it's an easy fix, just move to chassis ground, or fit a chassis ground busbar . . .

****
The manufacturers install guide is correct for NON-STOP/START cars/vans.

On stop/start like the T6, ALL -ve/0ve/grounds must go to the chassis ground and NOT go direct to the battery.

This is so the battery monitor can correctly monitor the power in/out.

its called "bridging out the monitor" and should not be done . . .

the cover gives an indication to this issue to . . . . . about NOT connecting battery chargers to the battery NEG post, but to use a body ground instead!

My issue with this is the VW have NOT provided a ground post near to the battery for this purpose (like most other manufactures do)

Thank you very much for pointing that out. I shall look at moving them ASAP.

 

[Shaun Witts]

I have those same white wires on my PF Jones towbar installation. They are bolted to ground on the right of the battery by the bonnet hinge bracket.
Should be easy to move them there by the look of things.

Pete

Thanks for the advice. That looks close enough.

I am surprised that the VW dealer didn’t mention this or even offer to move those wires when they replaced the battery and checked for any drain on the battery?