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After seven years of research and development, Slovenian shipyard EJET has achieved one of the first goals the company was founded upon – create an electric jet tender that outperforms its combustion-dependent competitors. Today, EJET has brought its 4X high performance electric jet tender to market as it puts the finishing touches on its next electric boat, which is even larger.

EJET was founded in Slovenia in 2016 with the goal of building all-electric tenders that meet the company’s three pillars: driver experience, sustainability, and pushing the boundaries of the industry using state-of-the-art technology.

The culmination of this young company’s work and development rests of the 4X tender – EJET’s flagship vessel it describes as a “world’s first” in high performance electric jet tenders designed to support superyachts.

While we’ve covered our fair share of solar electric yachts on Electrek, the larger ones – especially those worthy of the title “superyacht,” are still mostly reliant on diesel engines – but that doesn’t mean their tenders can’t be electric. Better yet, they can now outperform gas-powered versions without all the noise, vibrations, and nasty emissions out at sea.

From prototype, through testing, and now into the electric boat market, EJET’s 4X is available for sale and is delivering some impressive specs for such a small vessel. Have a look.

EJET’s new electric tender boasts 60 kW of power

Small but mighty, EJET’s 4X electric jet tender is packing some power, hence why the company is calling it a high performance model (I bet yacht owners are gonna eat that up). The 60 kW of continuous electric power from the 4X’s powertrain enables a top speed of 35 knots (40 mph). EJET CEO Žiga Jarc spoke to the challenges the company faced in developing a high performance jet tender that is also electric:

When it comes to electric boating, most often, people turn to the automotive industry for inspiration. But we quickly realized that this approach comes with limitations. A boat, being on the water, presents a completely different challenge. The density of water is 830 times higher than that of air, which means it’s like constantly climbing uphill. This led to a host of problems that demanded a different approach and exploring uncharted options.

Our aim was to engineer a system that delivers exceptional performance, requiring minimum maintenance, safe and always ready for getting in the water.

The electric tender’s custom powertrain is managed by an electronic control unit (ECU), optioning three different efficiency modes selectable on the 7-inch touchscreen seen in the images above: Eco, Normal, and Power. If the tender’s battery ever gets too low, the 4X will automatically switch to Eco mode to help conserve battery while its passengers navigate to the mothership or a nearby shore.

The 4X is equipped with a 46.2 kWh battery pack that offers up to 40 nautical miles (45 miles) of all-electric range on a single charge. The electric tender can replenish itself in eight hours via AC charging, or four hours on a DC fast charger. So what does a 4-meter, high performance electric tender cost? About $113,000 (100,000 euros).

EJET shared that each of its production slots of the 4X are already sold out for 2023, but customers can still place an order to ensure they get their electric jet tender for next summer. With the 4X successfully on the market, EJET says it is honing it focus on bringing its 9X electric tender to market next. It is expected to “launch” on waters in early 2024 and make debuts at boat shows later next year.

Additionally, the company says it is already prepping to expand its production capacity in 2024, making way for not only the 9X, but a 7-meter electric jet tender to complete the range. You can learn a bit more about the company and see the 4X (which looks like the prototype) in the launch video below:

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Formula E 600kW mid-race charging is finally ready, for real this time, we swear

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Formula E 600kW mid-race charging is finally ready, for real this time, we swear

After years of waiting and many false starts, Formula E is finally going to debut its mid-race charging system, which will give cars a quick boost of energy charging at a rate much faster than current road cars can.

For years now, we’ve been hearing about FIA plans to introduce charging stops to electric racing.

In gas car racing, some series allow mid-race fueling and some don’t. The World Endurance Championship, which runs the 24 Hours of Le Mans, obviously needs to fill up several times during the race. But Formula 1, which hosts shorter races, eliminated mid-race fueling in 2010.

Plans to bring mid-race charging to Formula E started in 2021, when the FIA started kicking around plans for an Electric GT racing series with 700kW charging.

But the FIA already had one electric racing series, Formula E, which had debuted in 2014. At the time, each driver had two cars, and would swap mid-race to a fresh car with new batteries.

Battery-swapping had been considered, but it would be too complicated to set up at temporary race facilities in city downtown areas, as many Formula E tracks are.

Then, in 2018, Formula E debuted a new “Gen 2” car which had a big enough battery not to need a charge mid-race, and later a “Gen 3” car in 2022, which had much stronger regenerative braking, capable of 600kW of braking power. Gen 3 also has an “Attack Mode” feature that lets cars unlock additional power for a short period each race, adding to strategy and mixing up the race order.

That 600kW charging ability could also be used for mid-race charging, so Formula E said that it was working on a system to allow for this. It announced that mid-race charging would come at some point in the 2023 season, but then pushed back those plans until 2024, and pushed them back again, this time with an uncertain date.

The issues involved building the charging system in temporary facilities and ensuring safety of the system (and of pit stops in general, which is always a concern when cars are driving rapidly near people). But after winter testing prior to this season, Formula E now says the system is ready to go.

So, once again, Formula E is ready to announce that mid-race charging is definitely, totally, positively, 100% certain at the upcoming Jeddah E-Prix, on February 14-15 in Jeddah, Saudi Arabia.

Formula E thinks that proving this high-power charging technology could help road cars to charge more quickly, which could have myriad benefits for electric cars in general.

The series is calling the system “Pit Boost,” and it will consist of a 34-second pit stop that provides around 10% additional charge to the cars (about 4kWh). While 10% isn’t a lot, 34 seconds is also not a lot of time. For comparison, one of the fastest-charging cars out there, the Ioniq 5, can charge from 10-80% in 18 minutes, which means 10% charge takes 2.5 minutes – five times as long as Formula E cars will manage the feat.

The stop will be mandatory for all drivers to take at some point in the race, and will mean new strategy options for drivers. Taking the stop means getting more energy, which means that your car won’t have to do as much energy saving to get to the end of the race – but it also means giving up your position on track, which can be hard to get back if you do it late in the race.

However, we’ve never seen it happen before, so it will be interesting to see what kind of strategic options develop.

If you’re interested in seeing how it turns out, tune in to the Jeddah E-Prix on February 14-15 to see what happens. It’s a doubleheader race weekend, with night races both on Saturday and Sunday, February 14-15, at 5pm UTC, 9am PST, 12pm EST, and 8pm local time. You can check out how to watch the race in your area by going to Formula E’s “Ways to Watch” section. In the US, Roku should be the most reliable way to watch.


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JackRabbit’s new solar charging kit keeps your e-bike topped up from the sun

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JackRabbit's new solar charging kit keeps your e-bike topped up from the sun

JackRabbit, the maker of pint-sized electric microbikes, is back with a new product designed to quickly recharge their batteries from pure, uncut photons mainlined into an e-bike directly from the sun. In true independent charging form, the Solar Charging Kit from JackRabbit keeps riders rolling even when there’s not a convenient AC outlet in sight.

Unveiled this week, the Solar Charging Kit consists of a single folding solar panel and a tiny voltage converter that is configured to output 42.0V, which is the exact voltage required by JackRabbit’s little e-bike batteries. There’s also an added USB-A and a USB-C charging port for powering other devices in addition to charging JackRabbit batteries.

“This Solar Charging Kit plugs directly into your bike,” explained the company, “letting you recharge without needing an outlet, but with a speed comparable to the charger that comes with the OG/OG2 (42V, 2A).”

That would mean the panel outputs around 80W of solar power, which the company says can recharge its batteries in just three hours. That fairly quick recharging speed is helped by the fact that JackRabbit’s batteries are a mere 151 Wh, or around a third of the size of most e-bike batteries.

If that sounds small, then you’re right – it is. But JackRabbit is all about going micro, offering barely 25 lb rideables that are easy to store and bring on adventures, even when they aren’t actually being ridden.

With small batteries that fit under the 160Wh limit for many airlines in the US, the batteries can be quickly charged and taken to the widest number of locations. And for riders that want to go further than a single 10-mile (16-km) battery will allow, extra batteries are small enough to fit a pants pocket. The company also offers much larger Rangebuster batteries, though they won’t pass by TSA and make it onto an airplane in your personal item.

It sounds like the Solar Chargking Kit should be able to charge up JackRabbit’s large RangeBuster batteries, though likely in more than three hours.

The $349 Solar Charging Kit is a bit pricier than building something similar yourself, but it’s also safer and more convenient than hacking together your own battery charger since it’s designed to work with JackRabbit’s batteries right out of the box.

Technically it’s only inteded for JackRabbit’s micro e-bikes (themselves technically seated scooters, even if they look and feel more like a typical bike), but it’d probably work for just about any 36V e-bike that requires 42.0V to charge.

This isn’t the first time we’ve seen solar charging kits for electric bikes, and it’s a trend that is certainly appreciated by outdoors and camping enthusiasts, festival goers, or anyone who finds themself and their bike spending extended periods in the great, sunny outdoors.

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Polestar hopes to steal Tesla sales, CATL revenue dips, and feeding the orcas

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Polestar hopes to steal Tesla sales, CATL revenue dips, and feeding the orcas

On today’s episode of Quick Charge, Polestar hopes to steal customers from Tesla now that Elon is involved in politics, CATL revenue dips for the first time ever, and a whole new way to feed the orcas drops down under.

As above, Polestar is hoping Elon’s descent into politics spells opportunity for the struggling Swedish/Chinese performance brand, CATL has big news in Europe, and Scooter Doll shows off a new electric submarine that’s so expensive, they won’t even tell us the price.

Prefer listening to your podcasts? Audio-only versions of Quick Charge are now available on Apple PodcastsSpotifyTuneIn, and our RSS feed for Overcast and other podcast players.

New episodes of Quick Charge are recorded, usually, Monday through Thursday (and sometimes Sunday). We’ll be posting bonus audio content from time to time as well, so be sure to follow and subscribe so you don’t miss a minute of Electrek’s high-voltage daily news.

Got news? Let us know!
Drop us a line at tips@electrek.co. You can also rate us on Apple Podcasts and Spotify, or recommend us in Overcast to help more people discover the show.

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