Tesla Powerwall 2 Battery Degradation via pypowerwall: Health and Warranty Replacement

5 Year Update of my Tesla Powerwall 2 Battery Degradation that was warranty replaced in AU.

I don't think it's fair for Tesla to purposely hide the degradation data/make it pretty difficult to get/, especially for not very tech-savvy people. My guess is that there are thousands of units that meet the warranty criteria but the owners would never know, all they see on the app is 100% charged, but is it 100% out of ~13 kWh, or more like 100% out of ~7 kWh?
If all this is too technical, I'd encourage the powerwall owners to raise a support case with Tesla and ask for their nominal_full_pack_energy metric.

How to find out the degradation of your tesla powerwall battery via pypowerwall tool https://github.com/jasonacox/pypowerwall

Tesla Powerwall 2 Battery Degradation Health and Warranty Replacement.

Apparently one can use the app "Netzero for Tesla App", I haven't tried it, also I'd be concerned with privacy/security, I think it needs your tesla account credentials to login.

The warranty for AU/NZ regions is "70% at 10 years"
https://www.tesla.com/sites/default/f...

pypowerwall setup commands mentioned in the video
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python3 -m venv myenv1
source myenv1/bin/activate

pip install -r requirements.txt
pip install urllib3==1.26.15 (only if you're getting an error for urllib3)

The stat you want to print is
print("System Status: %s" % pw.system_status())
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Calculate the percentage of remaining capacity
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100 * (1 - (advertised_capacity_energy - nominal_full_pack_energy) / advertised_capacity_energy)

My example:
100 * (1 - (14000 - 9469) / 14000) = 67.6% remaining capacity after 5 years since the install
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My stats for comparison
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nominal_full_pack_energy: 9469 - Value when I raised tesla support case, Regardless how you calculate 14000 or 13500, 9469 it's below 70% of full capacity

nominal_full_pack_energy: 15141 - Value of a freshly replaced powerwall

nominal_full_pack_energy: 14671 - Value after ~1 months after replacing it
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