Personal Log  #1199

February 11, 2023  -  February 16, 2023

Last Updated:  Weds. 2/22/2023

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2-16-2023

Other Automakers.  As expected, he completely ignored what I posted.  Waste made no difference to him.  He wants convenience... like what other automakers provide.  Having to endure slower speed at the DC fast-charger while the battery-pack is warmed should not tolerated.  That was unacceptable, period.  Ugh.  I fired back at that nonsense with:  This is why "know your audience" is so often mentioned.  Haven't you noticed that it wasn't until very recently that BEV owners focused exclusively on range?  They showed no interest in MI/KWH values. Efficiency simply wasn't a priority for them. Their mission was to prove the technology was robust & reliable. Toyota is entering the game following that early-adopter stage, so of course they standout as different. Think about where the market is going. Automakers were required to meet CO2 emission regulations, which meant improving efficiency of their ICE vehicles. The same will be happening for BEV, but it will include energy consumption for charging too. Toyota is being proactive in that regard, ahead of the automakers.

2-16-2023

This Is Why.  From time to time, I end up butting heads with enthusiasts.  Some just plain don't like the priorities of Toyota.  They expect the same behavior from all automakers.  Different is unacceptable.  That's how replies like this end up having to be some of the nonsense dealt to me: "Spare me your bullshit.  Why then Toyota heats up battery at beginning of charging when it could use battery for it before hand?"  He clearly wasn't happy and went on to say: "Please try to answer with your own head, not Toyota fantasyworld where they make everything right and fantastic."  When priorities clash, those enthusiasts who don't like the message will shoot the messenger.  Nothing I provide will make them happy.  It's an exercise in venting frustration.  They don't want to face the reality of priorities & audiences being different.  Mainstream shoppers are supposed to become a BEV owner that is well informed; therefore, they should have all the options possible at their disposal.  Toyota's choice to limit is unacceptable.  Ugh.  I kept my response simple, figuring this exchange will go on for awhile.:  There's no way an ordinary consumer would be able to pre-condition the battery to exactly the right temperature just prior to arrival, period.  They would just activate pre-conditioning and hope for the best.  That makes heat created from the act of charging a lost opportunity, wasted energy.

2-16-2023 Avoiding Waste.  From Toyota in Finland, an updated FAQ was published.  I had to download the PDF, run an image of the wanted page through OCR, then put that resulting text into a translator to get an English version.  This is what I posted online upon reading that information:  Below is the translation... which matches up with exactly what I have been saying for several months.  When you follow Toyota for as long as I have, knowing their approach to emissions & energy makes understanding their decisions easy to recognize and easy to predict.  In this case, it was quite obvious that the *WANT* for faster DC charging by consuming energy to warm the battery-pack prior to arrival at the station wasn't acceptable. Toyota's focus on *NEED* makes it easy to recognize a speed request won't get priority.  Faster is unnecessary. Anyone who claims to take climate change seriously, but advocates for wasting CO2 for the sake of spending less time at the DC fast-charger is not being sincere.

Q: Why doesn't the bZ4X model have a battery preheat function?

A: This is a choice that Toyota has consciously made.  In general, both DC charging itself and heating the battery shortens the battery life, naturally in relation to the DC charging power used and/or heating power.

Toyota wants to offer its customers complete peace of mind with the durability of the high-voltage battery and in terms of reliability years down the line, and by stressing the battery only moderately from DC charging events during this period, the battery can be granted a 10-year/1-million-kilometer battery protection.

With battery protection, we want to offer the customer peace of mind, because the high-voltage battery is always a fully electric car the most expensive single component, the price of which can generally be tens of thousands of euros.  By securing the condition of the high-voltage battery is also ensured, and the resale value of the car is maintained.

When it comes to preheating, it is also often overlooked that heating consumes considerable amounts electricity, which the customer pays in connection with the charging event as a price relative to the shorter one of loading time.

2-15-2023

Range Anxiety.  This is a self-deprecating argument: "Range is a big concern for those considering a new EV."  The more you advocate for BEV prevalence, the more you endorse BEV convenience.  That means talking about how DC fast-chargers are being built & funded with the intent of simple & easy use for road trips.  Think about how much less range you need the more DCFC become available.  If it is as convenient as stopping at a gas station, what's the point of carrying around a large battery-pack?  I was annoyed by a purist trying to push the idea that is it necessary to focus on range so much.  If anything, it makes advocates hypocritical.  Remember how purists would claim PHEV were a terrible idea because you would be carrying around the dead weight of a gas-engine not being used most of the time?  What's the point of carrying around a 300-mile capacity battery-pack when you really only need at most 200 miles for trips?  I responded to that supposed concern with:  Portraying range anxiety as if the only way to address it is increased range feeds the narrative.  Reality is, the vehicle itself doesn't necessarily need to change.  Think about it.  The true problem is worry due to lack of places to recharge.  By increasing the number of DCFC locations, that concern fades away.  In other words, placing blame on an automaker for not wasting resources by adding more battery (which consequently adds cost and decreases efficiency) doesn't make sense.

2-14-2023

Faster Isn't Always Better.  Learning about diminishing returns the hard way is what a few have reported.  The idea of "too much of a good thing" isn't what an enthusiast wants to here.  In fact, their mantra of "more is better" is well documented as a source of failure.  That's what Innovator's Dilemma highlights.  The required stage of scaling back on certain draws to make the niche product they support something for mainstream consumers is inevitably a huge point contention.  Not only do they feel it unnecessary to compromised, but when it becomes essential their lack of agreement as to how triggers the downfall.  They clash, unable to support change.  Think about how difficult it will be to let go of superior range being a selling feature.  That is vital for sales in the affordable market, that highly competitive space where an offering like Corolla is a major source of profit despite very thin margins.  Tesla has absolutely no experience in that arena.  Telsa has cultivated a culture of leadership being defined by pushing boundaries... which made this very easy to post, since it focused on the mindset in general rather than calling out Tesla directly:  That concept of "larger pack will charge faster" is relative, only applying to ordinary-sized BEV... comparing roughly a 80 kWh pack to 40 kWh.  When the pack is much larger... like Hummer's 210 kWh... you not only hit a DCFC limitation from maxing out the draw available, you can also be impaired by slowdown caused by excessive heat.  And since a giant vehicle like that guzzles electricity, that initial faster may not provide any greater travel distance than a much smaller vehicle.

2-14-2023

Deep Denial?  With some, you can tell.  When no matter what you post is either flat out dismissed without justification or ignored entirely, you know.  That confirmation of hatred is what justifies the change of perspective from enthusiast to antagonist.  They just plain don't care.  They'll take advantage of the ignorance, feeding on assumptions to stir and pass along misinformation.  It's quite tiring, but oddly not discouraging.  They'll belittle & insult based on incorrect claims.  The facts they present are false.  That's so vindicating to read their posts.  When they state something as impossible, an outcome you have witnessed countless times, how should you react?  The most basic is how often the gas-engine will start.  Some truly believe it is impossible to drive an entire commute using only electricity.  How many thousands of times do I need to do that before just wanting to sucker-punch the person claiming it cannot be done?  My drive includes steep hills, hard accelerations, and highway speeds.  They are no big deal, even with the heater running.  Are they in such deep denial they have convinced themselves of the impossibility or are they outright lying?  I don't know, nor do I care.  This is how I deal with that on-going nonsense:  Clearly there are some misconceptions at play, because that is not how a well designed PHEV actually works.  For example, you can run the heat-pump in a Prius Prime the same way as a BEV... inside your garage with the door shut, while grocery shopping, etc.  The battery doesn't cycle more either. In fact, the usable capacity is less for that very reason.  Longevity is preserved by making draws shallow, which is very easy to guarantee when you have a gas-engine available.  As for maintenance, that's just rhetoric.  Having your daily range covered by EV driving, the gas-engine will last a freakishly long time... especially since a PHEV like Prius Prime doesn't have a timing-belt or any gears that shift.  Basically, it is an act of denial disregarding how much more PHEV have in common with a BEV and do not with ICE.

2-13-2023

Level-1 Overlook?  I'm assuming this was an overlook: "I hear this point so often but its BS.  To get good EV mode use out of a PHEV you need to charge it every single day because the range is so low."  That obviously came from a BEV enthusiast.  Whether he was close-minded or just poorly informed is something I'll likely never find out.  The attitude though, it was clear... he doesn't like PHEV.  Why would you jump on someone like that for making this comment: "I live in an apartment with no level-2 charging infrastructure, it's perfect."  Knowing there was a large number of Volt owners who never had a level-2 EVSE and that there are some BEV owners getting by just fine without, I was annoyed.  So, I responded with my own attitude:  That overlooks level-1, which is indeed prefect.  Think about it.  You have 10 hours available.  From just a lowly 120 volts at 12 amps, you'll get 1.44 kWh per hour.  That's 14.4 kWh in 10 hours, which exceeds the capacity of the 2023 Prius PHEV.  That's roughly 40 miles of EV range without level-2.  So, even that slowest charging works just fine for a PHEV.

2-13-2023 AC Charging.  My reply providing home install follow-up sure ruffled some feathers.  He appeared quite annoyed: "The old terms are still widely used by laypersons and even some in the industry too.  And the difference has NO relevance to this discussion."  The fact that 220-volt service had been replaced by 240-volt back in the middle of the previous century didn't matter.  Focusing on the subject of this discussion was important.  Ok.  Fine.  But that difference did matter... which meant keeping my explanation why short absolutely vital.  I want to convey meaning without upset.  Hopefully, this achieved that:

220 * 30 = 6.6
240 * 30 = 7.2

Remember that the next time someone asks why specifications state "6.6 kW" as maximum charging speed and wants to know why reports from owners say it delivers "7.2 kW".

2-12-2023 More Install Info.  It's nice to see discussion stirred from open-ended questions based on critical thinking.  No talking points is wonderful.  You had subject matter than hasn't be preverted.  That's so nice.  Anywho, I ended up with more to contribute and posted four points summarizing consideration of the situation at hand:

First, there's no such thing as 220 in the United States anymore.  It's 240 volts now.  That's important to know when you are doing calculations on what to expect.

Second, without that 240-volt connection, you'll miss out faster top-offs, drawing from the wall when preheating, and off-peak discounts.  So even if you don't purchase a BEV for a very long time, those PHEV options won't be available.

Third, if you purchase a second PHEV, you're stuck having to do the install anyway.  Making do with 120-volt charging is realistic in many circumstances for a single vehicle.  But most garages don't have enough capacity (a second line) to support two.

Fourth, eventually when a friend who owns a BEV comes over to visit, it is super nice being able to offer them the ability to plug in for some type of meaningful recharge.

2-12-2023 Tesla Questions.  The topic of unlocking SuperChargers came up.  Tesla is in a pickle.  Something must happen.  It's a tipping point and federal subsidies are mighty appealing.  Allowing non-Tesla vehicles to recharge there goas against what many who own Tesla vehicles want.  Here's how I weighed in:

EU supports the benefit of a single standard.  Tesla squandered its opportunity to make its propriety connector a ubiquitous choice.  It would have meant accepting tradeoff of Tesla owners having an exclusive advantage.  SuperChargers are indeed a major draw for Tesla purchases.  That gamble may not prove to be a wise one though.  Risk of CCS becoming the standard here (North America using CCS-1) is very real.

With so many big name corporate investments... Electrify America, EVgo, ChargePoint, GM/Pilot, etc. along with NEVI funding all in favor of it, what are Tesla's options at this point?  Seeing automakers also show CCS preference pretty much fills the coffin.  Then there are smaller feasibility trials, like the series of DCFC connecting Starbucks from Seattle to Denver.  Ironically, it is Tesla kicking & screaming with regard to this topic.  That fight was lost years ago in Europe with CCS-2. True, here we have the more clumsy CCS-1 connector.  But history has proven the ideal choice is not always the winner.

Innovation could ultimately become the deciding factor.  We're starting to see DCFC stations with battery-packs to supplement both speed & cost.  Having enough capacity at locations can be very expensive.  New approaches like that could allow competition among CCS supports to heat up to the point where Tesla simply gets lost in the crowd.  Think about locations wanting to provide DC fast-charging but electricity supply and room for a large transformer simply isn't realistic.  It begs the question of what Tesla goals are.  How much do they want to invest in SuperCharger advantage?

All that ultimately brings us back to government intervention.  Here in the state of Minnesota, repeated attempts to open up public land (highway rest areas) to commercial DCFC opportunity have failed.  That resistance to changing status quo is holding for now.  Outdated laws holding back steps forward eventually fall though.  Someone will capitalize upon the opportunity.  We keep hearing about Tesla being a technology company rather than just an automaker.  With a potential paradigm-shift from Tesla finally delivering something in the entry-level market, what will be their focus?

There are many questions which the unlocking of SuperChargers could answer.

2-11-2023 Home Installs.  We're seeing the same questions now about level-2 installs at home.  How big?  How many?  Where?  Stuff like that is a big deal and newbies rarely know where to start.  So, I just climb up on the soapbox and starting sharing anything relevant to the questions with the hoping of stirring some discussion... as I did today:

Our choice to install two 240-volt lines 5.5 years ago was great decision.  We got two $500 checks for having each EVSE connected to an in-line meter providing off-peak discount electricity.  Now all that time later, I'm looking at replacing my Prius Prime with a bZ4X.  Nothing needs to be changed. That same hardware works as is. If my wife decides to upgrade to the 2017 Prime with a 2023 Prime, no change either.

My suggestion is to carefully consider outlet location.  For us, both were placed by the garage door.  That way, charging inside & outside the garage is realistic for either.  In my situation, I was backing my Prime into the garage so we would have maximum space between the two vehicles for driver doors.  Since the charging port on 4X with is in the identical location if I pull in forward to the garage, no change necessary. (Since we have a third stall to the left of the vehicles there's room; not all homeowners are so fortunate.)  If my wife ends up getting some bZ vehicle later, the cord from her EVSE will reach simply by hanging it over the vehicle.

As for capacity, go with 50-amp if your budget can handle it.  That's overkill, but not too much of an extra expense for 6-gauge wire instead of 8-gauge for 40-amp.  Since I didn't see the need, could easily pull the heavier wire through conduit later, and we were installing 2 at the same time.  My logic was the prediction of 7.2 kW from a 40-amp line (32-amp sustained draw) becoming the industry target for mass-market EV use.  Sure enough, that is indeed what happened for level-2 charging (single-phase) here. It delivers roughly 200 miles of range from 8 hours of charging.

Lastly, your service-panel may help make the decision.  If capacity is only 100 amps, you'll have to upgrade it anyway.  Might as well get a quote for 2 lines for 2 outlets then.  If it is 150 amps, support for 2 at the same time may limit lines to 40-amp lines.  You can approximate load for the entire house using online calculators... how much an electric stove, dryer, etc. will draw while also running the A/C.  There's lots to consider and expense savings by considering future need.  Many with stand-alone garages end up just adding a second box instead.

Just holler if you need help interpreting what an electrician provides for options.  Good luck.

 

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