Battery replacement

[hananmori12]

Hi so my 2014 sq5 battery about to die and I tried to find a cheaper and good solution instead oem battery,

What battery you guys are using? All battery come with bem code for programming ?

Tnx

[beefski]

Walmart believe it or not. It has 5 yr warranty. I used the H8 in my A4 3.2 without issue. Interstate, through Costco is a good source too.


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[redline9k]

same problem here, battery giving up when its -6 out.

Dealer wanted $315 + 125 to recode. I bought their best H8 from Advance for ~250. Your non-oem battery wont have a BEM sticker to recode in VCDS (CAN / Long Coding / Battery Replacement) . the first set of digits are the type of battery, then the manuf, then the serial number. Just go in an increment any of the integer values in the serial by +1 and the car will recognize a new battery.

for example, 4F0915105E JCB 16040550AP

I updated to

4F0915105E JCB 16040551AP

If you dont get the same type of battery that you took out, you may want to track down the correct battery type code (ie if its more or less ah). I purchased the same 95ah battery, so just left the battery code in place.

You dont have to immediately recode the ECU, mechanically, it will work just fine to run the car, but the computer wont recognize a new battery and will think its still an old degraded battery. people smarter than me suggest this may cause the ECU to start turning off things if it continues to think there is an old battery, but ymmv

[silver_tt]

optima yellowtop

[ImAudiHeree]

My 2014 Q5 TDi battery just finally died, looks to be the original battery from factory pretty impressed 2013 date code on that bad boy.

[silver_tt]

It's an AGM and a Varta at that. Not surprised....

[elRayRay]

My 2013 has the original battery also. Probably will replace soon, hopefully before issues surface. Would you go with Varta over Optima?

[silver_tt]

Varta is an excellent battery (it’s like the Duracell of Germany) but my preference was for the optima yellowtop (originally Swedish purchased by Johnson controls)

[WashparkS4]

Picked up a new battery from Costco. Made by Interstate. H7 (95R) AGM for $170. Recoded using VCDS by adding 1 to the serial number.

[ViktarS]

No need to recode it if the voltage is the same.

[5000S]

No need to recode it if the voltage is the same.

The voltage is the same for all batteries, 12V, it is the amperage that is different, that is what may need to be recoded.

[frank_CDN]

Need to recode as voltage changes slightly with age...I.e. 12.4v vs 11.8v. Both are considered 12v but recoding helps to deal with this variance.

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[Smac770]

Capacity, Ah, not voltage V or amperage A. Most likely reason it wants the capacity is for state of charge determination. If it knows wet flood vs AGM, and knows the capacity, then for a measured voltage at a measured current flow, it can do a lookup table for state of charge. But those lookup tables are based on capacity. A lookup table for voltage to SoC at .05C would only be relevant when the current draw is .05C. For a 92Ah battery, that's 5% of 92, or 4.6A. If it's only a 75Ah battery, then the table would apply for a 3.75A draw, not a 4.6A draw. But there's no documentation of what's really going on inside the J533 and the J367 in regards to these measuring block values, except the ones we know it directly measures: battery voltage, battery current, battery temperature. It could measure internal resistance, or it might assume it, don't know.