New Tesla Battery health test - Worse than I thought?

I took a big gamble and bought a 217,000 miles out of BCA Auction online without seeing it.
In this 3rd episode we check the battery health with a 2nd test using the new Tesla test and look into theHVAC system.

At the start of 2021 I created Chargeheads to introduce car enthusiasts into Modified EV and EV conversion content. An Electric Petrolhead if you like........A CHARGEHEAD!!!!

Embark on an electrifying adventure with me as I delve into the realm of exciting EV's!
My journey started with my EV conversions project which took me on a captivating exploration, visiting EV conversion garages to uncover the perfect candidate for transformation. Amidst the array of options, I found myself drawn to the lesser-known gem, the TVR Tasmin 350i, affectionately known as the Wedge (#tvrwedgee). After going with my gut, I decided to purchase a cheap and broken TVR I found and start this EV conversion marathon. With my TVR Griffith 500 already igniting my passion for untamed, adrenaline-fueled rides without driver aids, the choice to electrify a TVR was a natural progression.

My 2nd project was electrifying a 1970's BSA Aerial 3 Tricycle Scooter into a fun short range deathtrap, that is #SpecialTrikee project! Partnering with my friend Vinny now Zoe, we've injected new life into this classic ride, creating an electrifying experience like no other. Perfect for zipping around town on local jaunts, it's an absolute blast! Even Mrs. Chargehead affectionately dubs it my 'special scooter' – a charming nod to its origins as a humble 50cc two-stroke, now boasting a dynamic "250-watt" motor.

Introducing our latest endeavor: Rustee #RusteeTesla – the ultimate Tesla Model 3 Long Range upgrade project! Our mission? To elevate its aesthetics, enhance handling, and supercharge performance, all while retaining its unrivaled daily mileage and efficiency. How? By meticulously integrating recycled parts where possible and free parts from sponsors, making it better, but greener too. Get ready to witness the evolution of eco-conscious luxury, where sustainability meets superior driving experience

I hope to not only entertain with ChargeheadsUK Channel and the #TVRWedgee, #SpecialTrikee and #RusteeTesla builds, but also to inspire watchers to create their own greener transport.
With the help of leaders in their field like Ralph Hosier (Engineer, designer, builder of special vehicles, teacher, writer, TV presenter and trouble maker.
Ralph teaches Electric and Hybrid Vehicle Training (IMI Techsafe), builds some amazing one off projects and most of all is a top bloke!
He's the engineer behind #TVRWedgee the Electric TVR.

So let the fun begin......safely in a controlled environment using the right EV safety equipment! ;0)
Did I mention myself and Ralph have also done an EV Conversion safety video as well

#TVRWedgee #ChargeheadsUK #Specialtrikee #RusteeTesla #ChargeheadsLIVE

[scottferris]

I’ve recently bought a model 3 performance…..like last week and I’m really finding your channel great to learn all the stuff I wanna know.

[Dale-]

2021 model 3 LR
30k miles
Just done mine and got 95%
Very happy with that 🤝

[the_wonk]

It doesn't harm the battery, doing it once in a while doesn't just make a battery go pop. It recalibrates the BMS so that a more accurate range is shown

[blower]

As part of the testing process it has to bring the battery up to temperature before it starts charging - it will actually draw power from the AC charger during this phase but it won't be charging the battery. It will also run the heat pump to extract heat energy from the air etc, which is why the condenser fans are running. It does this as it can't calculate the bottom end of the battery, i.e. true 0% - unless the battery is warm and at a specific temperature.

[cJeremy]

i'd like to see the real world range when you go from like 100% to 10% or lower.

[Manoharan]

2:52 can you get the full self driving by paying for it or it doesnt have the feature at all?

[vincentrobinette]

Charge the battery to ~80%, then plug into level 1 charge for 24 hours. That will give the voltage balancing in the battery management system time to "work its magic". It could be, that there is unbalance in the state of charge, from cell to cell. The BMS calls the battery "dead" when the first cell drops down to ~2.5 volts, and considers the battery fully charged, when the first cell reaches 4.2 volts. Any unbalance will narrow the margins, making the battery appear to be down on capacity. Since the correcting current for the voltage balancing is very low, it takes a long time, to pick up significant differences in states of charge from cell to cell. It's imperative, that balancing occurs during a "float" charge, since differences in equivalent series resistance can cause voltage differences when current is flowing into or out of the battery. If the balancers try to come on during that time, it can actually cause a greater unbalance.
Another advantage of proper balance, is that when using DC fast charging, , the battery will pull higher current for a longer time, greatly reducing the time necessary, to bring the battery back up to 80%. Float the battery at 80% for at least 24 hours on level 1 or level 2 AC charging, then, try the "battery health" test again. That will tell whether the battery has actually degraded by that much, or, whether you see a significant improvement.

[bobholland]

Its top and bottom balancing the battery.

[andrewdavis]

Glad to see the battery balance is still so good after that many miles!! From what ive seen battery balance is really the only thing that kills the tesla batteries. At least with the model S

[PropertyAtAuction]

Just did mine using the "new" check on the Tesla Service screen (not the service mode) and on my June 22 M3 SR (38K miles) have 94% so more than happy with that considering LFP battery os supposed to have most degradation in first couple of years 🎉

[jeremyrom]

No the test does not harm the battery anymore then charging to 100% for a long road trip.

[andrewstapleton]

Great video! It would be really interesting if you could do a real range test on your Tesla. Recently, R Symons did a road trip in his high-mileage Tesla and still believes it can achieve 300 miles of range. It would be cool to see how your car compares. Would also be interesting to see if he could test his battery the same way you have.

[seanplace]

Considering that most cars after 200k are ready for the scrapyard... I think 71% battery state of health is decent, but I think it being cold may have influenced the results.

[IDann]

If the air conditioner is not working, doesn't that affect the battery cooling?

[sony]

Temperature also makes a difference on the test, that should be taking into account too.

[SidLuther]

Tim, let me know if you find an affordable place to get the sills repainted. Everywhere I checked are quoting £400 and upwards for that area.

[zero.zero.one.]

15:59
you entered the car before the test was finished AND you constantly checked the app.
You are not supposed to do this.

[lhrflyguy]

Where did you get the steering wheel from? I can't find it for less than £500!

[astra-ew]

All Vehicles require Service some more than others!

[lukyluke]

It seems the battery is pretty cold seeing the snowflake on the battery icon? Did it influence the test?