GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

2015 battery issue

G

gregozedobe

Battle scarred veteran
Location
Canberra, Australia
AGM batteries should be coded with Battery Technology = "FLEECE", not "binary-AGM" (binary-AGM is for bi-polar batteries, which require a quite different charging regime to regular AGM batteries). I've done many hours researching this issue, and am very confident this is the correct advice.

Batteries will work regardless of what coding is done, but they will last longer with the correct charging regime.
 
A

art_mark7

Go Kart Newbie
Location
Texas
Car(s)
Mark 7 GTI
gregozedobe said:
AGM batteries should be coded with Battery Technology = "FLEECE", not "binary-AGM" (binary-AGM is for bi-polar batteries, which require a quite different charging regime to regular AGM batteries). I've done many hours researching this issue, and am very confident this is the correct advice.

Batteries will work regardless of what coding is done, but they will last longer with the correct charging regime.
Click to expand...
wow everything on internet has been pointing to select "Binary-AGM", can someone else vouch for this setting?
I just paid for another AGM battery and i want it to last this time...
 
golfdave

golfdave

Autocross Champion
Location
Scotland (U.K.)
Car(s)
Mk7 Golf GT Estate
art_mark7 said:
wow everything on internet has been pointing to select "Binary-AGM", can someone else vouch for this setting?
I just paid for another AGM battery and i want it to last this time...
Click to expand...

Go read my thread on it.

People (including myself) at first thought the correct one was "Binary AGM"...but as more cars with the AGM battery from the factory were having their Adaptions & coding logs uploaded onto Ross-Tech forums they noticed that the factory coded AGM as "fleece"...

According to various sources of information, including numerous car scans & threads on Ross-Tech, "Fleece" is for standard AGM batteries, "EFB" is for standard EFB batteries, & "Wet" is for standard lead acid batteries, as these settings are used at the factory. The setting of "Binary - AGM" is apparently for specialist "Bipolar AGM" batteries! Also the drop down list is from VCDS & not generated by your car's BCM, therefore, your car may not support all the options on the list, & the BCM will reject the value when you tell it to accept it!

I edited & updated my thread In August this year...

How to retro-fit a bigger capacity battery to a Mk7 Golf | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum
 
B

bentin

Autocross Champion
Location
Austin, TX
Car(s)
23 Golf R - 3 Pedals
Well that's interesting, off to check mine. Fleece is the same in German and English, I wonder how they ended up there?
 
golfdave

golfdave

Autocross Champion
Location
Scotland (U.K.)
Car(s)
Mk7 Golf GT Estate
bentin said:
Well that's interesting, off to check mine. Fleece is the same in German and English, I wonder how they ended up there?
Click to expand...

No idea...but I double checked masses of scans & other info before I corrected my thread as I thought like others did that "binary AGM" was the correct one....& binary AGM batteries do exist..& are different to "normal AGM"
 
golfdave

golfdave

Autocross Champion
Location
Scotland (U.K.)
Car(s)
Mk7 Golf GT Estate
IWMTom said:
AGM batteries are also called Lead-Fleece batteries. There's glass fibre fleece layers inside.
Click to expand...

"Absorbent Glass Mat".....bit of a giveaway..(with hindsight)... :censored:
 
golfdave

golfdave

Autocross Champion
Location
Scotland (U.K.)
Car(s)
Mk7 Golf GT Estate
avenali312

avenali312

Autocross Champion
Location
Mableton, GA
Car(s)
2015 GTI
golfdave said:
Go read my thread on it.

People (including myself) at first thought the correct one was "Binary AGM"...but as more cars with the AGM battery from the factory were having their Adaptions & coding logs uploaded onto Ross-Tech forums they noticed that the factory coded AGM as "fleece"...

According to various sources of information, including numerous car scans & threads on Ross-Tech, "Fleece" is for standard AGM batteries, "EFB" is for standard EFB batteries, & "Wet" is for standard lead acid batteries, as these settings are used at the factory. The setting of "Binary - AGM" is apparently for specialist "Bipolar AGM" batteries! Also the drop down list is from VCDS & not generated by your car's BCM, therefore, your car may not support all the options on the list, & the BCM will reject the value when you tell it to accept it!

I edited & updated my thread In August this year...

How to retro-fit a bigger capacity battery to a Mk7 Golf | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum
Click to expand...
I'm going to have to check mine now. I did the coding when I replaced mine with an AGM battery about 2 years and 16k miles ago. I'm assuming that most AGM batteries that come from the chain autoparts stores are the "fleece" type and not bipolar.
 
golfdave

golfdave

Autocross Champion
Location
Scotland (U.K.)
Car(s)
Mk7 Golf GT Estate
avenali312 said:
Dave, any idea how detrimental this could be to the battery?
Click to expand...

No real idea, but theory (not just mine) that it means the car systems/alternator won't charge up the battery fully or that those same systems won't recognise the battery state 100% accurate. No real "damage" to the battery.
 
You must log in or register to reply here.
Top