Zürich Switzerland-based Juice Technology AG aims to simplify home and travel charging with the Juice Booster 2, a level 1 and 2 portable charger that is tough as nails. We use it on our own EVs to find out how it fares.
As veterans, we often forget, but new EV owners don’t realize just how pitiful the stock charger is with a new electric car. Many manufacturers include a charger in the trunk that can charge with a regular 120v outlet. An overnight charge will add about 30-40 miles to the average EV, which isn’t enough for much more than daily tasks.
To get more use from their EV, The committed owner is obliged to install a dedicated 240v circuit in their home, and install a faster level 2 system which can charge most cars overnight. After power gets to the wall, an EVSE (Electric Vehicle Service Equipment) is affixed to the home. Normally these are plastic boxes with a simple display that imitate larger pedestals at public charging stations.
Why the Juice Booster 2?
The Juice Booster 2 is an ultra durable home EVSE, which can also be fitted with native connector types and taken on the road. The unit itself will determine all the proper input and output automatically, and charge the car so long as the power source plug (or adapter) is plugged in. On the face of the enclosure is a simple binary indicator for Faults, Current, and Mode. Changing mode will changes the display from a light to dark mode, in case the persistent blinking charging indicator bothers you (although, many EVs have their own light display that can’t be turned off).
The current offering for the USA market features a J1772 plug, which is standard for most makes of electric vehicles, at least for now. Going into the power source, Juice has a variety of connectors available, including TT-30, 6-50, 6-15, 6-20, and 5-20.
Juice Booster 2 at home
As a home unit, the Juice Booster 2 can charge up to 22kw with the right power source. At this rate, most any EV will be charged overnight. This is a much faster top current compared to many competitors, which cap at 12kw. Will your home outlet provide that kind of power, and is that the speed at which you want to charge your car every day? Probably not. Thanks to the current selector on the Juice Booster 2, the charger can be tailored to provide the right amount of power without charging the car too fast over the lifetime of the battery.
Juice Booster durability
Plastic, wall mounted home EVSE units are not durable. They sit cozy on the wall, and that’s their lot in life. The Juice Booster 2 is made to withstand the elements, and immense crushing weight. The unit is IP67 rated for dust and water resistance, and is tough enough to be run over with a 5,000 lb electric car. I did it twice myself.
While this kind of durability seems like a parlor trick, it’s super practical considering that these units are sometimes left straddling the garage, and prominently placed in the pathways of vehicle tires. Not having to worry about squashing a charger solves one of the first concerns of new EV owners.
Juice Booster 2 abroad
Traveling with an EV is a new experience for many, one that requires less and less planning as time goes on. The Juice Booster 2 is sold as a travel charger that can be plugged into a variety of sources, using their native connector, or 3rd party adapters. This feature seems to have a lot more value in other markets, like Europe, where regularly crossing borders result in different plugs and voltage levels that require adaptation.
In the land of stars and stripes, this feature is less useful. Traveling on the road, (and not using public chargers) the only outlet of regularity is the common 120v home outlet. Plugging into a 240v dryer or oven outlet is certainly possible, but how often do we need this charger, and also feel comfortable asking our house hosts to use them?
Juice Booster 2 use case
I’m going to imagine that many USA customers won’t get much value from the travel application of the Juice Booster 2, but here is an illustration to show how it can be great.
Every couple months or so, we pack up the kids for a trip to the grandparent’s house, which happens to be in the country. Their small town doesn’t have a public charger nearby, and likely won’t for some time. Our EV can make a round trip from the closest public charger, but we like to charge after arriving, especially in the winter.
Grandpa has been trying for years to justify his welding equipment, which required a specialty 240v outlet in the garage. With the use of a simple adapter, we were able to plug in the Juice Booster 2, and solve three issues: #1, charge up the car, #2, make Grandma feel like we will come over more often, and #3, justify Grandpa’s largely unnecessary expenditure (he uses it like once every five years).
Electrek’s Take
After using the Juice Booster 2 for some time, I think it’s a great option for someone getting their first home EVSE. The design is impressively durable, and I really like the source connector, as it locks into place and confirms a great purchase on the plug. The ease of mind for durability and whether resistance is top notch, especially if a car has to be charged without a garage or cover.
If you have circumstances anything like mine, then the Juice Booster 2 could be a surprisingly good fit for your car. On the other hand, if you already have a home EVSE, and a 120v trickle charger in the trunk, then you’re pretty much set.
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Tesla’s former head of artificial intelligence, Andrej Karpathy, who worked on the automaker’s self-driving effort until 2022, warns against believing that self-driving is solved, and fully autonomous vehicles are happening soon.
Karpathy is a very respected leader in the field of artificial intelligence.
In 2017, Musk poached him from OpenAI and he quickly became the head of Tesla’s AI effort, including leading neural nets for Autopilot and Full Self-Driving.
He left Tesla in 2022 and return briefly to OpenAI in 2023 before starting his own in AI education company, Eureka Labs.
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The Slovak-Canadian computer scientist is widely regarded as one of the top computer vision experts and he pioneered Tesla’s vision-only approach to self-driving.
Karpathy gave a talk at Y Combinator’s AI Startup School event this week and made some interesting comments about self-driving.
He recounted when a friend working at then Google self-driving company, now Waymo, gave him a ride in a self-driving car in 2013:
We got into this car and we went for an about 30-minute drive around Palo Alto, highways, streets and so on, and that drive was perfect. Zero intervention. And this was 2013. It was about 12 years ago.It kind of struck me because at the time when I had this perfect drive, this perfect demo, I thought “well, self-driving is imminent because this just work. This is incredible.” But here we are, 12 years later, and we are still working on autonomy. We are still working on driving (AI) agents. Even now, we haven’t actually solved the problem.
12 years later, Waymo currently operates over 1,000 vehicles in California, Arizona, and Texas where it completes hundreds of thousands of autonomous rides with paying customers every week, but Karpathy explains that this doesn’t mean autonomy is solved.
He continues:
You may sees Waymos going around and they look driverless, but there’s still a lot of teleoperation and lot of humans in the loop in this driving.
Waymo has confirmed that it uses some teleopeartion, but it’s not clear to what level. It’s clear that it at least communicates commands to the vehicles remotely when they get stuck.
Kaparthy adds:
We still haven’t declared success, but I think it’s definitely going to succeed at this point, but it just took a long time.
The engineer added that “software is tricky” and that he believes that “AI agents”, which is a term often use to describe AIs that can perform tasks for humans, like driving a vehicle, are going to take time. He believes this is not the year of AI agents, but the decade of AI agents.
Here’s the full presentation:
Electrek’s Take
While Kaparthy didn’t name Tesla, the timing of his comments as Tesla is launching its “Robotaxi” service this weekend is interesting.
It certainly contracdits what his former boss, Elon Musk, is saying: that self-driving is solved.
As we have often highlighted in recent weeks, Tesla’s Robotaxi launch is simply a game of optics for Tesla to be able to claim a win in self-driving after years of broken promises and missed deadlines just as Waymo is rapidly expanding its own self-driving services.
Tesla Robotaxi launch a game of optics?
Electrek’s @fredlambert94: “Tesla is trying to get a win and say that it ‘launched its robotaxi on time in June’ when this is basically Tesla’s public FSD with the supervising driver being moved to the passenger seat.” pic.twitter.com/o3eSyqKxlJ
I think Kaparthy, who led Tesla’s computer vision effort behind self-driving, knows that has yet to solve the problem and will require human supervision for a while longer.
Based on the best data available, Tesla currently achieves a few hundred miles between critical disengagement with FSD and it needs to get into tends of thousands of miles to achieve a true level 4 autonomous systems.
We are still a few years away from that at best.
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Senior Israeli officials said this week that their military campaign against Iran could trigger the fall of the regime, an event that would have enormous implications for the global oil market.
The oil market has reacted with remarkable restraint as Israel has bombed the third-largest crude producer in OPEC for eight straight days, with no clear sign the conflict will end anytime soon.
Oil prices are up about 10% since Israel launched its attack on Iran a week ago, but with oil supplies so far undisturbed, both U.S. crude oil and the global benchmark Brent remain below $80 per barrel.
Rising risk
Still, the risk of a supply disruption that triggers a big spike in prices is growing the longer the conflict rages on, according to energy analysts.
President Donald Trump has threatened the life of Iran’s supreme leader Ayatollah Ali Khamenei and is considering helping Israel destroy the Islamic Republic’s nuclear program. For its part, Iran’s leadership is more likely to target regional oil facilities if it feels its very existence is at stake, the analysts said.
Israel’s primary aim is to degrade Iran’s nuclear program, said Scott Modell, CEO of the consulting firm Rapidan Energy Group. But Jerusalem also appears to have a secondary goal of damaging Iran’s security establishment to such an extent that the country’s domestic opposition can rise up against the regime, Modell said.
“They’re not calling it regime change from without, they’re calling it regime change from within,” said Modell, a former CIA officer and Iran expert who served in the Middle East.
Official denial
Prime Minister Benjamin Netanyahu denies that regime change is Israel’s official goal, telling a public broadcaster on Thursday that domestic governance is an internal Iranian decision. But the prime minister ascknowledged Khamenei’s regime could fall as a consequence of the conflict.
There are no signs that the regime in Iran is on the verge of collapse, Modell said.
But further political destabilization in Iran “could lead to significantly higher oil prices sustained over extended periods,” said Natasha Kaneva, head of global commodities research at JPMorgan, in a note to clients this week.
There have been eight cases of regime change in major oil producing countries since 1979, according to JPMorgan. Oil prices spiked 76% on average at their peak in the wake of these changes, before pulling back to stabilize at a price about 30% higher compared to pre-crisis levels, according to the bank.
For example, oil prices nearly tripled from mid-1979 to mid-1980 after the Iranian revolution deposed the Shah and brought the Islamic Republic to power, according to JPMorgan. That triggered a worldwide economic recession.
More recently, the revolution in Libya that overthrew Muammar Gaddafi jolted oil prices from $93 per barrel in January 2011 to $130 per barrel by April that year, according to JPMorgan. That price spike coincided with the European debt crisis and nearly caused a global recession, according to the bank.
Bigger than Libya
Regime change in Iran would have a much bigger impact on the global oil market than the 2011 revolution in Libya because Iran is far bigger producer, Modell said.
“We would need to see some strong indicators that the state is coming to a halt, that regime change is starting to look real before the market would really start pricing in three plus million barrels a day going offline,” Modell said.
If the regime in Iran believes it is facing an existential crisis, it could use its stockpile of short-range missiles to target energy facilities in the region and oil tankers in the Persian Gulf, said Helima Croft, head of global commodity strategy at RBC Capital Markets.
Tehran could also try to mine the Strait of Hormuz, the narrow body of water between Iran and Oman through which about 20% of the world’s oil flows, Croft said.
“We’re already getting reports that Iran is jamming ship transponders very, very aggressively,” Croft told CNBC’s “Fast Money” on Wednesday. QatarEnergy and the Greek Shipping Ministry have already warned their vessels to avoid the strait as much as possible, Croft said.
“These are not calm waters even though we have not had missiles flying in the straits,” she said.
Greater than even odds
Rapidan sees a 70% chance the U.S. will join Israeli airstrikes against Iran’s nuclear facilities. Oil prices would probably rally $4 to $6 per barrel if Iran’s key uranium enrichment facility at Fordow is hit, Modell said. Iran will likely respond in a limited fashion to ensure the regime’s survival, he said.
But there is also a 30% risk of Iran disrupting energy supplies by retaliating against infrastructure in the Gulf or vessels in the Strait of Hormuz, according to Rapidan. Oil prices could surge above $100 per barrel if Iran fully mobilizes to disrupt shipping in the strait, according to the firm.
“They could disrupt, in our view, shipping through Hormuz by a lot longer than the market thinks,” said Bob Bob McNally, Rapidan’s founder and former energy advisor to President George W. Bush.
Shipping could be interrupted for weeks or months, McNally said, rather than the oil market’s view that the United States Fifth Fleet, based in Bahrain, would resolve the situation in hours or days.
Electricity prices rose 4.5% in the past year, according to the consumer price index for May 2025 — nearly double the inflation rate for all goods and services.
The U.S. Energy Information Administration estimated in May that retail electricity prices would outpace inflation through 2026. Prices have already risen faster than the broad inflation rate since 2022, it said.
“It’s a pretty simple story: It’s a story of supply and demand,” said David Hill, executive vice president of energy at the Bipartisan Policy Center and former general counsel at the U.S. Energy Department.
There are many contributing factors, economists and energy experts said.
At a high level, the growth in electricity demand and deactivation of power-generating facilities are outstripping the pace at which new electricity generation is being added to the electric grid, Hill said.
Prices are regional
U.S. consumers spent an average of about $1,760 on electricity in 2023, according to the EIA, which cited federal data from the Bureau of Labor Statistics.
Of course, cost can vary widely based on where consumers live and their electricity consumption. The average U.S. household paid about 17 cents per kilowatt-hour of electricity in March 2025 — but ranged from a low of about 11 cents per kWh in North Dakota to about 41 cents per kWh in Hawaii, according to EIA data.
Households in certain geographies will see their electric bills rise faster than those in others, experts said.
Residential electricity prices in the Pacific, Middle Atlantic and New England regions — areas where consumers already pay much more per kilowatt-hour for electricity — could increase more than the national average, according to the EIA.
“Electricity prices are regionally determined, not globally determined like oil prices,” said Joe Seydl, a senior markets economist at J.P. Morgan Private Bank.
The EIA expects average retail electricity prices to increase 13% from 2022 through 2025.
That means the average household’s annual electricity bill could rise about $219 in 2025 relative to 2022, to about $1,902 from $1,683, according to a CNBC analysis of federal data. That assumes their usage is unchanged.
But prices for Pacific area households will rise 26% over that period, to more than 21 cents per kilowatt-hour, EIA estimates. Meanwhile, households in the West North Central region will see prices increase 8% in that period, to almost 11 cents per kWh.
However, certain electricity trends are happening nationwide, not just regionally, experts said.
Data centers are ‘energy hungry’
The QTS data center complex under development in Fayetteville, Georgia, on Oct. 17, 2024.
Elijah Nouvelage | Bloomberg | Getty Images
Electricity demand growth was “minimal” in recent decades due to increases in energy efficiency, according to Jennifer Curran, senior vice president of planning and operations at Midcontinent Independent System Operator, who testified at a House energy hearing in March. (MISO, a regional electric-grid operator, serves 45 million people across 15 states.)
Meanwhile, U.S. “electrification” swelled via use of electronic devices, smart-home products and electric vehicles, Curran said.
Now, demand is poised to surge in coming years, and data centers are a major contributor, experts said.
Data centers are vast warehouses of computer servers and other IT equipment that power cloud computing, artificial intelligence and other tech applications.
Data center electricity use tripled to 176 Terawatt-hours in the decade through 2023, according to the U.S. Energy Department. Use is projected to double or triple by 2028, the agency said.
Data centers are expected to consume up to 12% of total U.S. electricity by 2028, up from 4.4% in 2023, the Energy Department said.
They’re “energy hungry,” Curran said. Demand growth has been “unexpected” and largely due to support for artificial intelligence, she said.
The U.S. economy is set to consume more electricity in 2030 for processing data than for manufacturing all energy-intensive goods combined, including aluminum, steel, cement and chemicals, according to the International Energy Agency.
Continued electrification among businesses and households is expected to raise electricity demand, too, experts said.
The U.S. has moved away from fossil fuels like coal, oil and natural gas to reduce planet-warming greenhouse-gas emissions.
For example, more households may use electric vehicles rather than gasoline-powered cars or electric heat pumps versus a gas furnace — which are more efficient technologies but raise overall demand on the electric grid, experts said.
Population growth and cryptocurrency mining, another power-intensive activity, are also contributors, said BPC’s Hill.
‘All about infrastructure’
Thianchai Sitthikongsak | Moment | Getty Images
As electricity demand is rising, the U.S. is also having problems relative to transmission and distribution of power, said Seydl of J.P. Morgan.
Rising electricity prices are “all about infrastructure at this point,” he said. “The grid is aged.”
For example, transmission line growth is “stuck in a rut” and “way below” Energy Department targets for 2030 and 2035, Michael Cembalest, chairman of market and investment Strategy for J.P. Morgan Asset & Wealth Management, wrote in a March energy report.
Shortages of transformer equipment — which step voltages up and down across the U.S. grid — pose another obstacle, Cembalest wrote. Delivery times are about two to three years, up from about four to six weeks in 2019, he wrote.
“Half of all US transformers are near the end of their useful lives and will need replacing, along with replacements in areas affected by hurricanes, floods and wildfires,” Cembalest wrote.
Transformers and other transmission equipment have experienced the second highest inflation rate among all wholesale goods in the US since 2018, he wrote.
Meanwhile, certain facilities like old fossil-fuel powered plants have been decommissioned and new energy capacity to replace it has been relatively slow to come online, said BPC’s Hill. There has also been inflation in prices for equipment and labor, so it costs more to build facilities, he said.