Replacing the 12 volt battery

[uscpsycho]

After doing more research I have to revise my last post.

I said you can put a H5 or H6 battery in a 2019 e-golf SEL but I think the OEM battery on SEL models is H6, if so then downsizing would be a bad idea.

I also said that you "can" use an AGM battery but I have since read that AGM batteries are actually stock (a VW service advisor also told me that). If so then you should definitely stick to AGM. But I do not know for sure.

I have also read that coding new batteries is not necessary for e-golf. It is definitely necessary for ICE Golfs, and that may be why a lot of people think e-golf also has to be coded, but there are people saying that it is not necessary for this car.

So now all I can definitively say is that a H6 AGM battery will fit and work find on a 2019 SEL e-Golf. I can't say that an H5 or EFB are OK to use and I can't say coding is necessary. I haven't coded my new battery yet and there aren't any problems at all, but I will probably code it anyway since I got a OBDeleven.

[Jeff4]

I noticed that Tesla has replaced their lead-acid 12V battery with a Li-ion battery. I am wondering if this H5/Group 47 might work as a replacement for the e-Golf, https://www.ohmmu.com/product-page/12v- ... -q8-e-tron ? It weighs just 12 lbs compared to about 42 lbs for the lead-acid equivalent, and I would imagine that it has a much longer lifetime. Of course it is double the cost (or more).

Has anyone tried this for a replacement?

(My 2019 e-Golf was put into service in October 2020, so I figure I still have a few more years on the original 12V battery).

[BomBoi]

Glad this thread exist since i want to upgrade to an Li battery . i will try this conversion once I'm ready to swap out mine. Im torn to either go Antigravity or Ohmu.

[f1geek]

Is a lithium 12 V worth the expense when a lead acid battery will last 5 to 7 years?

[Jeff4]

Is a lithium 12 V worth the expense when a lead acid battery will last 5 to 7 years?

I observe that a name-brand 12V AGM H6 replacement battery costs between $200-$300. The Ohmmu LFP battery is currently listed at $432.10 (with shipping). According to the manufacturer, "The Ohmmu 12V LiFePO4 battery is lighter, more efficient, higher usable capacity, eco-friendly, and lasts 4x longer than a traditional sealed lead acid (SLA) battery."

So, the LFP option looks intriguing if you are planning to keep your e-Golf for 7-10 years after replacing the original battery. Of course, that is a long time...

[f1geek]

I saw much higher prices, so this Lithium model makes more sense. I wonder how a “traditional” 12 V compares to AGM with respect to lifetime.

[Jeff4]

Poking around a bit on the internet, I have found a lot of issues regarding reliability, low-temperature charging, and lifetime of these LFP-based 12V batteries. For example, Tesla owners replacing their older lead-acid batteries with these do not seem happy, though this may have more to do with how they interact with Tesla’s battery management software.

I think I’ll stick with lead-acid when mine needs replacement on my e-Golf.

[jillianvanliew]

I replaced my 2016 eGolf 12V battery the end of 2022 & my dealership wanted to charge $254.00 + installation (priced $217.72 for the exact battery on VW's parts website). For reference, I live in Los Angeles. My service advisor gave me $20.0 off the cost of the battery. Isn't that a b*tch!! I even sent the website for reference. Just know that the dealer is going to upset everything they can' having the overhead they have (nice clean floors, bathroom, waiting room & service department.

[f1geek]

For those of us with back issues, not having to lift a 12 V battery is certainly worth the cost of installation. I will never replace a 12 V battery myself again.

[Jeff4]

For those of us with back issues, not having to lift a 12 V battery is certainly worth the cost of installation. I will never replace a 12 V battery myself again.

How about an LFP weighing 12 lbs? You can be our product tester....