Does PEM on 2.5 Roadster support 3.0 battery

[nicky _cwt]

I have a 2011 Roadster and I am going to upgrade 3.0 battery. Tesla asked me to replace the PEM with the 3.0 battery upgrade. My PEM is working fine. Do anyone know that whether it is just recommendation, or it is a must for replacing the PEM in order to support 3.0 batter?

Another question. Tesla said they don't offer new PEM anymore (they said they used to offer new PEM but recently discontinued). They can only provide remanufactured PEM and it is really expensive (around 10K USD). Anyone having experience with the remanufactured PEM? Do Tesla replace all capacitor/transistor/isolation/connector.... for the remanufactured PEM, or they just replacing parts that necessary for supporting 3.0 battery.

 

[backmost]

They have to replace some of the boards in the PEM and install 3.0 specific firmware for the R80 pack.

 

[nicky _cwt]

Thanks

They have to replace some of the boards in the PEM and install 3.0 specific firmware for the R80 pack.

Thanks very much for the reply. How much they charge in US for replacing the boards in US? They are charging 10K here in HK. It seems very expensive for just swapping some of the boards....

 

[DeedWest]

That sounds unusual that they would ask to replace the PEM unless it currently has issues going into your R80 upgrade. Have you asked them for clarification why? Here in the US, they just send your PEM board to HQ for reman. into the 3.0 board then return it back for install, which takes a couple of months.

The upside to the reman. PEM is that they typically carry a warranty of 2 years or 24K miles. They are rebuilt at HQ and I’ve had a great experience with them functioning without issue on my Roadster.

 

[backmost]

The battery warranty I had from the previous owner was 3 years or 36,000 miles whichever came first. I had the intention of bringing 209 to get a checkup before the warranty expired in April 2020, but then COVID hit.

 

[ViperDoc]

When I had my 3.0 v2 installed, they replaced my PEM with a "new" PEM. It was new in that it was never used, but according to some sources, these "new" PEMs were just PEMs manufactured 10 or more years ago that had been sitting in storage.