Greetings -

It looks like my battery from 3/2023 is getting close to the end of its life on my 2020 ES350 UL. I bought the car used and it looks like the previous owner had the battery replaced by the Lexus dealership. The part number is: 00544-mfh60

When I look this part up on the Lexus part site, it says this is not compatible with my vehicle. Is that correct? If so, does anyone know the correct part #?

Thank you!

 

Post #11 on this thread might help

https://www.clublexus.com/forums/es-...ase-model.html

 

Hmm...

If you look up the Lexus OEM battery part number 28800-38080 in the part listing links in that referenced post #11 on US Lexus parts listings, you'll find that part number has been discontinued (at least for sales in the US).

 

Replacement batteries are supplied by Interstate batteries (to Lexus specifications), they don't use OEM part numbers. The only OEM batteries shipped from Japan are the AGM batteries for the older hybrid vehicles.

Part numbers for replacement batteries are in a separate catalog, contact your dealer's parts department. Your car uses a group size H6 battery, 00544-MFH60 seems to "fit", it might have a greater reserve capacity than the original battery.

 

Thank you to all for the replies! It's a bit odd to me that Lexus makes this so hard to find. I can definitely get a battery from Costco but just wanted to check Lexus first, particularly if I can get a prorated warranty for this 2023 battery. That said, I may just buy a Costco (interstate) battery to eliminate any hassle.

 

So our replacement is an H6 AGM or standard flooded cell battery? My ‘21 is still on the original Clarion which I think is OE.

 

Lexus battery warranty: Free replacement up to 2 years for sale date, 50% pro-rata for batteries 2 to 4 years of service.

If the battery is more than 2 years old and the dealer is going to charge labor for "test and replace", the Costco battery will cost less.

 

Just following up in case anyone else is looking for a non "Lexus" alternative. I did not find any flooded cell H6 available. Walmart sells the Ever Start H6 AGM and Costco sells the Interstate H6 AGM for well under $200.

 

Thanks! I ended up getting a non-agm from Costco. I really thought about the AGM, but was afraid it wouldn't really work on the car. I thought the alternator would not charge it sufficiently? Does anyone know if that is true or a rumor? Also, if getting an AGM, do you need to do any re-programming?

 

What makes you think the original battery was not an AGM? All my searches say a 2020 ES350 is AGM.

 

An OEM Lexus ES 350 battery is and has been labeled "Clarios 380LN3-MF". (See ***What did you do to your ES today?*** post #849 for a photo of the OEM battery label.) There isn't anything on the battery indicating it is an AGM type of battery.

In all the searches I've tried, I haven't found any results which are authoritative. Some search engines lean toward providing "The Clarios 380LN3-MF is a high-quality, maintenance-free (MF) Enhanced Flooded Battery (EFB) for vehicles" type answers and others lean toward providing "It is classified as an AGM (Absorbed Glass Mat) type in some OEM applications" type answers. If you spend some effort in examining the sources of those types of search engine answers, you find they all pretty source back to non-authoritative user postings to Toyota and Lexus forums.

 

I agree, I could not conclusively determine it was an AGM battery based on the information sources, it was more like "consensus says" which is why I polled the OP.
It's kind of frustrating, something so basic would not be more self evident. Would a digital battery tester provide the answer based on internal resistance? Or a simple shake test?

 

One way like I did for my 2020 ES300h is call the Lexus parts dept and they will look up part and tell you. As weird as the charging system is in the hybrid I surely would not want to put in wrong type.

 

Frustrating for sure, but all of my research says it is non-AGM. I actually wouldn't mind putting an AGM version in later, but I just want to make sure the car can handle it. Can anyone confirm if any additional programming needs to be done? I'm wondering if the alternator will produce enough juice.

 

This is what Lexus put on my car under 4yr 50k warranty claim on 12/2025. Battery was put in service on 9/04/2021. I was the 2nd owner on 8/20/2025.