What a wonderful guest. That was awesome team. Keep bringing the nerd level knowledge to the EV community. Cheers.

I level 2 charge my LFP Model 3 to 100% every Sunday (one mile from home). It finishes around 4pm, then it's driven to work at 7am the next day. Then driven down to 4-15% by next Sunday morning. Sometimes there's been an unexpected work cancelation on Monday. I take it leaving the car at 100% for the typical 15 hours isn't good, and the rare 39 hours is even worse.

Good information here. Scott is easy to listen to.

Tom, loved the L2 charge speed question. I use an old 20a Clipper Creek that I bought for my Fusion Energi 11+ years ago and it's all I need 98% of the time overnight, but will occasionally use my J+ 40a if needed in the hopes that it was actually better for the battery.

Wonderful show. Really learned a lot from Scott. Thanks guys!

I'm a Chemist so LOVE me the battery chemistry talk.

Wow, great, fascinating show. There's so much CW around batteries, lots of it contradictory, that it's great to hear from a genuine expert in the field. And Tom even got a little cheeky at the end. Bonus!

Awesome episode. If/when you have Scott back, could you discuss something I often hear Kyle mention, which is the danger of punching it when you are at a very low state of charge. I understand the basics of it, and it is part of the reason for turtle mode, but it would be really great to hear an expert's explanation of it. Thanks Dom + Tom + Scott!

I charge ours at 32A. I have a charge point that let's me set it. Thanks Dom and Tom! This was a good topic to cover with a battery expert. Nice shark reference Tom!

One topic conspicuous by absence is how to safely leave your EV battery for months without driving. Mine is in a 65 degree garage at 50% SoC and connected to a level 1 charger. If the location was much hotter, I’d decrease to 40% SoC and much colder probably 60%-70%. I’ve never had a battery problem.

Excellent topic and guest. For EV nerds, this confirms information we’ve heard from other experts.

Domenick, this was one of the most informative videos on EV batteries I've watched. I've been an EV owner for over 2 years and I still learned things I didn't know about both NMC & LFP batteries. Thank you Dom, Tom, and Scott for clearing up a lot of myths and misconceptions about EV batteries and how to charge them.

One small difference with charging your car at home at a lower amperage vs higher is that the onboard charger will have to do more work to increase to the proper voltage to charge the battery, so it will cost more overall, that's probably negligible though. I should do a test to see how much energy is used at 12 amp vs 32 amp to charge my battery the same amount.

Fantastic information about our EV batteries. Thanks Scott!

Thank you for this session. My brain is happy today.

Great job. But as an electrical engineer, there is one thing that he kinda said but you over all skipped. In most of the newer battiers they have a buffet. Example VW ID.4 is a 82 kwh but they limit it to only 77 usable. Many cars have this so even when you charge it to 100% it is not really sitting at 100%. Tesla does this. The Bolt is one that has a very small buffer and it has had more issues.

We charge two EVs off 16 amps with the ability to max out at 24 amps for the circuit. 16 amps is more than ample for most of us. We drive approximately 27,000 miles annually combined, primarily home charging with the occasional short DC fast stop. 24 amp rate is available when needed, but I can count on one hand the number of times 24 amps were needed.

This was awesome. I would like to learn more about the use of LFP batteries and solar systems in houses.....

The idea of one car with two batteries with different chemistries and purposes is very interesting, hybrids are a similar but less sophisticated idea. Are any car manufacturers considering this?

Excellent! Enjoyed every minute!

Thanks for the great video. I'm going to experiment with my Level 2 charging rate so it lands at 100% on my LFP battery closer to my drive time.

Great vid! For the next discussion could you discuss the pros and cons of cylindrical, pouch, and prismatic cells especially as far as longevity and heat management. It’s seems most of the cars Kyle test that have poor heat management are cylindrical cells and the others with good performance are pouch and prismatic. Thanks

Great session. Information that is needed for all considering EV purchase. My biggest reason for not pursuing EV purchase is the environmental impact to the planet versus the advantages of redacting CO2 emissions. I am not concerned that the level of CO2 is a major contributor to temperature variations/climate change/global warming. The planet’s temperature has been variable for thousands of years. There are signs of large trees in places that are frozen year round presently. It would be nice to have a discussion surrounding Li battery fires: what is the major contributor; what are the toxic emissions, temperature of the fire.

Chicago was lack of preconditioning batteries before they got to a DC Fast Charger and the lack of CCS chargers. Plus their reliability issues at Electrify America and EV Go. And charging to 100% with Chevrolet Bolts takes 2 hours, they should have charged to 80%

Great information. However, we have 2 EVs, and my wife doesn't care about the charge rate. She wants a reliable charge. There is no reason to give charging data to 99% of customers.

24:00 Agreed. I heard tell to keep your LFP battery plugged in (not necessarily charging) at extreme low temps.

This is great. Thanks so much.

I wish he would have talked about the NCM battery and charging or why. He did great on the LFP

Interesting topic on battery health, great podcast guys ❤❤

Great show!

Great episode

Great discussion. In many ways EVs are not that different from ICE vehicles. Operating any vehicle, regardless of the drive train, degrades the drive train. However, there are practices that result in longer operating life. Red lining a gas engine once won’t wreck it but doing it routinely will shorten the engine’s longevity. Just don’t treat a battery like it was a gas tank.

This is cool and all but most people dont take care of their vehicles already now just imagine the care you may need to have for maintaining a battery.

This was fun I enjoyed the show.

Thanks for the shark warning Tom. Great reference .

Great episode. But will someone please tell Dom that Lithium-Iron-Phosphate (LFP, aka, LiFePO4) ARE Lithium-Ion batteries?! He meant LFP vs. NMC (or NCM), not LFP vs. Litium-Ion batteries. The latter two are the same ....

Related to my other questions, could it be that smaller round cells are easier to heat and cool so thermal management works better on them? Could that be the reason they seem to lose less range? It seems like it would be more difficult to cool a thicker battery or to heat it up for charging.

Thanks Scott 40:21

When I plan a long trip, I decide when I want to leave. Next I set the charge limit to 100% and plug the car in. When the screen tells me how many hours it will take, I subtract those hours from my leave time, and schedule the charge to begin at that time. For example, if I want to leave at 8am, and the car tells me it will take 6 hours to reach 100% when I plug it in, I go into the app and schedule the charge to begin at 2am. Simple. Then I don’t have to worry about it.

It would have been helpful to know not to charge my 2013 PHEV (CMax Energi) immediately to 100% upon arriving home. By the end of the car’s life 11 years later, the estimated electric-only range was down around 30% (from 21 miles to 14 miles). Thanks for a great show, as always.

My Charge Point Home Flex is limited to 24 amps by my home wiring situation. My Mach E has never been DC charged. The fastest it’s been charged is 40 amps and 32 amps a few times as I was finding my breaker limit so not very often. (50 amp breaker circuit off a 60 amp sub panel. 60 amp was the one tripping.) Hopefully this bodes well for longevity. 😊

9:00 I did not know about Potassium batteries. Stationary Battery storage.

One thing I've noticed for study of EV battery degradation is that it's worse on packs that have larger cells and fewer cells. For example Model X and S that use the smaller 18650 cells (and more of them) have less range loss than Model 3 and Y that have the larger 2170 cells. It also seems from early data that the even larger 4680 cells degrade even faster. Is there science behind that? Is it related to the cell size alone or also the total number of cells in the pack? Or does the S and X just have better pack designs and thermal management?

Wondered if a battery composed of 60% NMC cells and 40% LFP would provide advatages in such that the LFP portion would take the recharging cycles and the NMC portion would cycle less but provide better power density and performance.

I don't think I heard this discussed in this video, or elsewhere, but here's the question that keeps nagging me: Can an EV battery be frozen so completely that it cannot recover? For now, forget trying to charge. Can the battery be so truly bricked that, even if you gently warm them before charging, they will not be able to accept a charge any more? BTW does this depend on the chemistry type?

Interesting comment about charging PHEV. Chatch22 small battery so need to daily charge to max EV range yet does not take long to charge. So the poor user needs to be smart about using the on-board charge timer.

I have a Tesla 3 RWD. The Tesla manual says to leave your charge level to 100% and to charge to 100% at least once a week. A bit confusing. I charge to 100% about twice a week, then put the limit to 50% until the level reaches this point beforce charging again to 100% I drive about 11,000 miles a year. Am I doing the correct thing?

This is the video automakers need to train their employees with‼️‼️‼️‼️‼️

LOL Thanks!🙏

Here is the situation I face if I buy a EV; I want a long range version preferably all wheel drive. Biggest problem would be is it would sit unused in the carport on average a couple weeks at a time. Couple times a year it would see long road trips for when I'm in the mood to travel. How would this affect the batteries? Should I leave it on a trickle charge every night? Biggest worry would be damage to the batteries. What would be the best battery type for this situation? When traveling I want to charge as few times as possible. Thanks

Is there anyone out there to tell us about degradation in high heat regions like phoenix?

Does tesla even give the consumer any detailed specs on what battery they are ordering?

Q: Is 60 to 50% better than 80 to 70%?

Where is consumer protection to put these charging issues on the label?

41:00 The boat will sink and a shark will bite you.

It doesn't seem like it's going to be gradual for vehicles. It looks like BYD is close to a 10 minute 10-80% charge on a 400 mile battery which is a convenience store stop which is the goal, I would think, for 95% of the users. As far as longevity goes, it should be good as they will only fast charge 5% of the time.

So why can't we have dual chemistry batteries with one of them being replaceable?

Scott who is nobel prize winner Akira Yoshino? Why is he famous? Why is yoshino power systems calling their batteries "solid state"?????

So he recommended don't charge LFP batteries to 100% every week?

Great episode. Of all the episodes for Kyle to miss, sucks it was this one. Would've really liked to hear his input as well.

Shoul have asked scott how he likes to charge his car

Just premium gasoline requirement is a deal breaker. Mediocre MPG when battery is depleted (28) is not helpful either. Overpricing the no massaging seats and no moonroof vehicle is really bad.

Is the EV industry tilting toward the throwaway car mentality again when costs to them are added in?

Using the term calibration is incorrect as it is performing a verification. An educated professor should understand the difference. Calibration is comparing an unknown with a known standard which has known values, including error traceable to a National Standard and not some software verification. Calibration does not include adjustment as most National References are never adjusted or you loose the drift component which is critical to stability over time.

This is nerd level 9000. Lady in a Model S pulled up to an EVgo CCS I was charging my Model Y and pulled out her J1772 to Tesla adapter and asked me how to use it. 99.99% of the population can’t handle this video.

All batteries degrade both with how you charge and the aging effect. Why do you think all ev manufacturers state the capacity will be 70% or more over 8 years ? Every EV battery will fail eventually and every battery pack is slightly different. Lithium batteries might fail because the BMS detects the pack has charged over 3000 times and has degradation which is 8 years approximately. Our diesel KIA had a 7 year warranty but now after 7 years KIA announced they are phasing out supporting the car. Will the EV car be the same with the 8 year battery warranty lasting longer than the car ? If so your EV might have a failed module that can not be sourced thus scrapping the car after the vehicle warranty expires. Volkswagen told me that the new generation ID3 batteries can not be fitted to the first generation cars.