Best of LinkedIn: Charging & Battery Technology CW 38/ 39

00:00:00:

00:00:23: So today we are setting up a deep dive into the top charging and battery technology trends that buzzing all over LinkedIn right now.

00:00:30: Yeah, we are going straight to the sources for you looking at what next gen mobility professionals Are actually arguing about this week?

00:00:38: Right getting past the marketing fluff?

00:00:39: exactly okay Let's unpack this.

00:00:42: I want to start with the absolute most dramatic hardware pushing the limits of physics right Now.

00:00:48: heavy-duty electric trucks.

00:00:50: Oh yeah The megawatt charging hype

00:00:52: it's everywhere like if you look in the recent reveals that IAA transportation the claims or just Massive.

00:01:00: BYD brought out their ETT-IV electric tractor and they're claiming a one point five megawatt charge rate,

00:01:07: which is just a staggering number to even think about.

00:01:10: right the pitch Is basically taking this massive battery pack from twenty percent to eighty percent in About twenty minutes.

00:01:17: yeah And it looks beautiful on a spec sheet.

00:01:21: But the reality of actually delivering that kind of localized power is just complete logistical minefield.

00:01:27: Oh

00:01:27: absolutely

00:01:28: There was this really sharp breakdown from Chris Jackson that highlighted this perfectly.

00:01:33: He pointed out, sure a truck can mathematically ask for one point five megawatts from the station

00:01:38: But it doesn't mean its going to get it.

00:01:40: Exactly

00:01:41: It receives lowest of four distinct limits.

00:01:43: So you have connector itself The physical charger The site controller For the depot And then actual grid connection.

00:01:51: So essentially like ordering massive industrial fire hose Then attaching it to garden hose.

00:01:56: plumbing of residential house.

00:01:58: That is exactly what it's like.

00:02:00: Jackson did the math on this thermal bottleneck, if you take an eight hundred and fifty-one volt truck right?

00:02:04: And plug into a two hundred and fifteen amp uncooled connector You are instantly capping that theoretical one point.

00:02:11: five megawatt beast at just two hundred ten kilowatts

00:02:14: Just because of

00:02:16: the cable!

00:02:20: The system trims power delivery so things don't melt.

00:02:23: So...that maximum speed Is basically theoretical.

00:02:27: It's not just the charger side either.

00:02:30: Muneer Khan brought this point up about the megawatt charging system, you know?

00:02:33: The MCS standard

00:02:35: Oh right!

00:02:35: The vehicle architecture

00:02:37: Yeah Megawatt Charging fundamentally changes the battery engineering inside the truck itself.

00:02:42: To accept that kind of load... ...the vehicles thermal management and the Battery Management System have to be massively scaled-up

00:02:49: Because You Have Pull All That Heat Out Of The Cells Immediately.

00:02:52: Exactly.

00:02:53: If You Don't, You Irreversibly Cook This Cell Chemistry.

00:02:56: It's a whole systems engineering problem.

00:02:59: Which really brings up what Sorob S called the Concorde Problem.

00:03:03: The Concord Problem, I

00:03:04: like that!

00:03:04: Yeah it is such great way to frame it...the Concorde was an engineering marvel right?

00:03:08: Supersonic passenger flight worked flawlessly from a tech standpoint but supporting infrastructure and economics just didn't work.

00:03:15: Right, it couldn't scale!

00:03:17: Exactly and we are seeing the same thing with ultra-fast charging.

00:03:20: The technology to do a five minute charge exists but out in the real world... ...the fastest chargers deployed in the US maxed out at three hundred fifty kilowatts

00:03:29: And that's if you're lucky?

00:03:30: right If multiple vehicles pull into site they share power and output can drop down like seventy-five kilowatt per stall

00:03:37: Which is wild when you have automakers building these thermally aggressive battery packs for an infrastructure can't feed them.

00:03:45: It's a massive disconnect and Alexander Klose actually made really good observation about this, he pointed out that the industry is so obsessed with maximum peak speed but charger power should just match natural dwell time.

00:03:57: Oh like how long someone has stopped for anyway.

00:04:00: Exactly!

00:04:01: He used his great example of highway rest stop Erschenberg in Germany.

00:04:05: The chargers there operate at one hundred fifty kilowatts.

00:04:07: Now on paper sounds kinda slow for modern network.

00:04:10: Yeah you'd think they want Three fifties everywhere,

00:04:13: but it's actually perfect for human behavior.

00:04:15: People stop at that location For a thirty minute coffee break.

00:04:18: That dwell time means one hundred and fifty kilowatt.

00:04:20: charger comfortably refills the passenger car exactly when The driver is ready to leave

00:04:25: okay?

00:04:25: But if you apply that to commercial freight the whole equation changes completely because A truck driver taking their legally mandated forty five-minute brake needs To add You know roughly four hundred kilometers of range before getting back on the road.

00:04:38: In that specific use case, a seven hundred kilowatt charger isn't a luxury.

00:04:43: It's an operational necessity.

00:04:45: it really is and That necessity is exactly what's triggering so much grid anxiety right now.

00:04:50: Oh man the grid panic.

00:04:53: Real quick before we get into the grid data.

00:04:56: if you are finding this deep dive useful for your daily work make sure to subscribe So you catch all our future additions?

00:05:03: Okay, so great anxiety.

00:05:05: Everyone assumes heavy freight charging is just going to collapse local utility networks.

00:05:09: Right, you hear megawatt bursts and think the lights are gonna flicker in next town over?

00:05:14: But data tells a totally different story doesn't it?

00:05:16: It does!

00:05:17: Pedro Pacheco and Ion Lejua Lewis highlighted this research projecting Europe's electric truck fleet needs.

00:05:23: They estimate that will require an enormous two hundred terawatt hours of energy by twenty forty five

00:05:28: Which sounds completely apocalyptic.

00:05:30: It does, until you look at where that power is needed.

00:05:33: That massive demand is hyper-concentrated into just one percent of the territory.

00:05:38: Wait really?

00:05:38: Just ONE PERCENT?

00:05:39: Just

00:05:40: One Percent!

00:05:40: Between seventy and eighty percent of all charging will happen in private depots or logistics hubs not out on public highways.

00:05:47: So the grid panic overblown because we only need to upgrade very specific hotspots.

00:05:52: Exactly If we connect this to the bigger picture, The bottleneck isn't a total baseline generation of power grid.

00:05:59: It's literally just getting local utility to approve and build high capacity connections at specific

00:06:04: warehouses.".

00:06:05: And if a fleet can actually secure that depot connection... ...the economics get super interesting!

00:06:11: I saw Jason Roych to break down the financial mechanics here, specifically why LFP – Lithium Iron Phosphate Batteries will basically kill diesel.

00:06:19: Oh this was fascinating!

00:06:21: Because it's not just about cheap electricity versus diesel fuel….

00:06:25: Right

00:06:25: The real driver of fleet economics is total cost ownership — specifically the truck's residual value for second owner

00:06:33: Which is huge.

00:06:34: in commercial leasing

00:06:35: Exactly A fleet runs a truck four or three years.

00:06:39: If the battery chemistry degrades heavily, The second owner doesn't want it.

00:06:42: The value plummets and the first fleet takes a massive depreciation hit.

00:06:47: But LFP structurally changes that?

00:06:49: It does because LFP is so stable!

00:06:52: It handles thousands of cycles with minimal degradation.

00:06:55: BYD is backing their commercial batteries With a ten year one point two million kilometer warranty.

00:07:01: That's insane for a commercial truck

00:07:03: Right So...the second owner gets totally healthy trucks.

00:07:07: And because that residual value stays high, electric beats diesel by up to a hundred and thirty seven thousand dollars over its lifespan.

00:07:14: Wow!

00:07:15: See?

00:07:15: That kind of predictability is amazing.

00:07:17: for private fleets the Depot model works but The moment you look at public charging for passenger cars that financial control just totally evaporates.

00:07:25: Oh it's brutal...the business model for Public Charge Point Operators, the CPOs?

00:07:30: It's fundamentally broken.

00:07:32: Sum and YMV shared this breakdown of the true cost of a fast charge in India, And it really exposes the problem.

00:07:39: The underlying ratios are the same everywhere

00:07:41: right?

00:07:41: Exactly so.

00:07:42: if you pay five hundred rupees for a charge You'd think most of that is for the actual electricity.

00:07:47: sure

00:07:48: but only about one hundred eighty rupees as actual power.

00:07:51: Wow

00:07:51: less than half

00:07:52: Way less.

00:07:53: The rest goes to fixed demand charges from the utility, site rent back-end software and maintenance.

00:07:59: Cpo's are basically selling availability not just power

00:08:02: And Availability is incredibly expensive.

00:08:05: those demand charges Just kill low utilization sites.

00:08:08: They really do.

00:08:09: you pay a penalty based on peak potential load even if nobody plugs in for three days

00:08:14: Which completely changes how we should think about mandating chargers.

00:08:17: like James Tillman brought up multi family housing.

00:08:20: Local codes often mandate one dedicated charger for every single apartment.

00:08:24: Which made sense five years ago, maybe?

00:08:26: Exactly!

00:08:27: But with EVs getting three hundred plus miles of range now drivers don't need to charge every night.

00:08:33: You plug in once a week

00:08:34: Right.

00:08:35: So forcing the developer to install two-hundred chargers just creates stranded assets.

00:08:42: Shared access and smart load management makes infinitely more sense.

00:08:46: And honestly, when sites aren't making money maintenance is the first thing to get cut.

00:08:51: Dan Baldesini made a great point that seeing an out-of-order sign erodes EV trust faster than anything else.

00:08:56: Oh totally.

00:08:57: But if CPO's are bleeding cash on demand charges they can't afford to send field technicians every time a dispenser glitches.

00:09:04: The hardware just has be more reliable out of box Which why Angelo Ease post about Lincoln Electric was so cool.

00:09:11: Oh!

00:09:12: The Welding Company?

00:09:13: Yeah!

00:09:13: A hundred and thirty one year old welding company.

00:09:16: They realize that an industrial inverter welder does the exact same job as a DC fast charger.

00:09:22: It takes AC off of grid and turns it into highly controlled, tight DC!

00:09:26: Exactly... And it does in shipyards & steel mills.

00:09:30: So they use ninety-five percent parts commonality from their welding gear to build the Vellani EV Charger.

00:09:35: That is brilliant.

00:09:36: Just repackaging over a century of industrial uptime Into charging dispenser.

00:09:41: Right..They didn't have invent ruggedness from scratch

00:09:45: And that kind of rugged engineering is becoming critical, especially as we move to eight hundred volt vehicle architectures.

00:09:50: Glenn Dawson highlighted a fascinating constraint here about physical connector pins?

00:09:55: Oh the spacing issue!

00:09:56: Yeah...the literal clearance and creepage distances When you jump to eight-hundred volts or near a thousand volts it becomes a severe safety threshold.

00:10:05: A thousand volts can physically jump one millimeter gap in open air

00:10:09: So it creates a literal arc fault.

00:10:11: Exactly, so low voltage design that had massive safety margin suddenly becomes a literal ArcFault liability.

00:10:18: if you try to reuse for eight hundred volts

00:10:20: You can't just push more current through the same plastic housing.

00:10:24: No!

00:10:25: You have to fundamentally re-evaluate dielectric breakdown limits.

00:10:28: It's completely different here of electrical engineering

00:10:31: And zooming out from this micro physics problem really illustrates what battery is becoming.

00:10:37: What happens when millions of these high-voltage batteries are just sitting in garages?

00:10:42: They stop being fuel tanks.

00:10:44: Right, they become the most important distributed nodes on the entire energy grid

00:10:48: Which is exactly what Jennifer Granholm was highlighting.

00:10:51: with Germany's recent regulatory shift... ...they unlocked a massive twenty three gigawatt hour virtual power plant A VPP that was essentially hiding people basements.

00:11:02: Just by updating the rules right?

00:11:04: The um..the Miespel

00:11:05: Rules?

00:11:06: Yeah, the Miespol rules.

00:11:08: Previously if you wanted renewable subsidies your home battery could only store rooftop solar.

00:11:13: it was legally isolated from the broader grid

00:11:15: But now they can mix solar and grid power

00:11:18: Exactly without losing the subsidy.

00:11:20: So home batteries can automatically buy cheap power when the grid is flushed with renewables And then discharge it When network is strained.

00:11:26: They brought a massive power plant online Without pouring an ounce of concrete.

00:11:32: That's incredible but also proves that regulatory environment dictates everything, because Jikershaw posted this sharp contrast looking at the US specifically California.

00:11:42: Oh!

00:11:42: The PG&E situation?

00:11:44: Yeah

00:11:45: well Germany is updating rules to make this work.

00:11:47: PG&e refuses to pay homeowners fairly for VPP participation.

00:11:52: so the traditional utility moves so slow that big tech is stepping in.

00:11:57: Google literally had to fund twenty one thousand home batteries in the Bay Area

00:12:01: just To Make Room For Their Own Data Centers

00:12:03: Exactly because waiting for PG&E to build a substation takes five years.

00:12:08: So Google is artificially carving out grid capacity by funding residential storage themselves!

00:12:15: Which really highlights the geopolitical stakes of all this because if our mobility and data infrastructure are both entirely reliant on batteries, The supply chain is a massive vulnerability.

00:12:25: Oh absolutely!

00:12:26: Vincencius Leong pointed us out regarding Japan.

00:12:29: Toyota's manufacturing partner building world first mass production plant for solid state batteries right now.

00:12:34: And Solid State is the holy grail.

00:12:36: no flammable liquid electrolyte.

00:12:38: crazy energy density

00:12:40: Yeah, targeting over seven hundred miles of range and ten minute rapid charging without degrading the cell.

00:12:45: Wow Leon called it a potential sputnik moment.

00:12:48: It's a huge breakthrough but the raw materials to scale it lithium refining advanced graphite are still overwhelmingly dominated by China.

00:12:56: So even if the IP is in Japan scaling it could deepen US dependency on Asia for critical minerals

00:13:03: Which is why domestic circularity?

00:13:04: Is basically our only defense.

00:13:07: Melissa Flaherty shared a really big win on this front from GM.

00:13:10: They just built their first EVs using cells with one hundred percent recycled nickel, cobalt and manganese.

00:13:16: Oh wow!

00:13:16: A hundred percent?

00:13:17: Yes

00:13:18: all recovered directly from end-of-life GM battery packs.

00:13:21: We are finally seeing closed loop recycling move from a lab concept to validated vehicle production.

00:13:27: That is huge.

00:13:29: And you know transitioning from the lab to mass production perfectly captures point gelpastana made about battery science.

00:13:35: She reflected on how true innovation isn't obvious.

00:13:38: It takes years to learn the state of the art, and in the middle phase it's just full of intense friction self-doubt and messy incremental failures.

00:13:46: which

00:13:46: is so true!

00:13:47: The market is still impatient.

00:13:49: we want a perfect megawatt charger and solid battery to arrive finished

00:13:53: tomorrow.

00:13:55: We love finished stories, but whether it's the thermal limits of trucks or broken CPO models we are deep in the messy middle Of this transition and frankly that friction is just what systemic innovation looks like.

00:14:07: That Is a great perspective.

00:14:09: if you enjoyed This episode new episodes drop every two weeks.

00:14:13: also check out our other editions on commercial fleet insights autonomous mobility markets And software defined an AI-defined vehicles.

00:14:21: Thank You so much for listening and remember to subscribe.

00:14:24: And before you log off, I want to leave you with one final thought to mull over.

00:14:28: We talked about how commercial truck charging is moving behind closed doors to private depots and we just saw tech giants funding private home batteries to secure grid capacity because utilities are too slow.

00:14:39: so if heavy transport and big tech or both building their own localized power ecosystems?

00:14:44: Is the future of our energy grid destined to become a series of privatized microgrids leaving public infrastructure entirely?