Ecoflow announced the Delta Ultra today at CES, its monster 6kWh home LFP battery pack on wheels. Its 240V/30A= 7.2kW output can back up a home the way a whole home generator or Tesla Powerwall can. However, this thing has wheels and can be loaded into a vehicle to be transported to a campsite or a remote location. EcoFlow provided us with one last month and we’ve taken it to an off-grid tiny home which it kept powered, even in the cold of winter, for a whole weekend. Let’s have a deeper look…
This is the biggest battery pack I’ve ever reviewed by a long shot. I’ve tried tons of smaller battery packs (even e-bikes!) with 120V AC inverters that you can plug laptops and sometimes as much as refrigerators into for short periods of time. But the Ultra can back up the whole home. Until now, that was something reserved for Tesla Powerwall-grade equipment (which I have 2 sets) that comes via electricians or smelly, noisy gas generators.
The EcoFlow Delta Ultra spec sheet is super impressive for an off-the-shelf product:
6kWh of LFP power, 3500 cycles, safer for inside usage, 7.2kW peak output
Weight: Battery 116 lbs + 70 lbs inverter = 186 lbs or 85 kg with wheels
Wifi + Bluetooth enabled plus app for monitoring remotely. Even an optional 4G dongle
Outlets galore including a 240V 30A generator plug and 120V 30A RV plug
Whole spec sheet follows:
The EcoFlow Delta Pro works seamlessly with a 60A Smart Home Panel which was too small for my home to try out. This is integrated into the app allowing remote management of circuits and 0ms cutover time in the event of a power outage.
Tiny House power
With, 14kW of Solar, a 200A breaker box with Tesla Powerwalls at my home, The EcoFlow Delta Ultra didn’t make sense as an additional home backup. However, a friend of mine has been using a rotation of batteries to rent an off-grid tiny house as an AirBNB. But these smaller batteries aren’t able to heat the home with a 240V heat pump. He either has to use a gas generator to power the heat pump, rely on a small wood stove, or stop accepting guests when it starts getting cold in the fall.
The Delta Pro with its 240V output and 6kwh of storage would likely be enough to heat the home for a weekend as well as run lights and entertainment for the weekend. The heat pump is quite efficient and while it requires almost 1.5kW to start up and heat the home within about 20 minutes, it only requires about 300W to keep the 200-square-foot tiny home warm throughout the weekend.
In practice, the Ultra worked as advertised in 40-degree weather, keeping the home at about 65 degrees and powering small appliances and entertainment. However, the LFP batteries likely suffered a bit with the lower temperature, still allowing the home to operate for 48 hours but using more of the battery than anticipated by about 5-10%. This could be remedied by moving the battery inside the warmer house.
The Ultra is very quiet, only kicking the fans on at the outset when the heat pump was firing up as well as the tiny refrigerator and load went over 2000W. Under 2000W, the fans turn off and it is completely silent.
The Ultra has a variety of inputs including solar options which may make sense for this tiny house going forward, making it a true off-grid solution. At about 3kWh/day, we figure about 1kW of solar is needed or about 3 economical roof panels. Five panels or about 1.6kW will allow for a bigger buffer and enough to start doing things like electric induction cooking (bye propane), and e-bike charging.
For now, he charges it at home on a 120V outlet which takes about 5 hours from empty. He delivers it ahead of the customers on Friday full and picks it up with a little remaining charge on Sunday evening.
For those people who own off-grid cabins, this could be the perfect product to take with them. And while at home, it can function as whole home backup power.
Electric Vehicle charger?
You can Level 2 charge an EV with this at 7.2kW and add 6kW of battery in about an hour, adding as much as 25 miles of range (depending on the vehicle). You can even do the reverse and charge it on an EV charger(!):
Availability
EcoFlow DELTA Pro Ultra will be available starting today Jan. 9 on the EcoFlow website and Amazon.com. On the EcoFlow website, users can purchase DELTA Pro Ultra (inverter and battery) for $4999, and the Smart Home Panel 2 is available for purchase at $1599, or as a bundled package with DELTA Pro Ultra for $6399 until February 9. After that period, the prices are $5799 for DELTA Pro Ultra, $1899 for Smart Home Panel 2, and $7499 for the DELTA Pro Ultra bundle.
Electrek’s take
EcoFlow’s Delta Ultra is a new breed of 240V portable batteries that will enable a new level of off-grid comfort where it hasn’t existed before. This is great for off-grid cottages, RVs, tiny homes, camping, and other applications. Adding solar makes this a one-stop shop. The wheels make it easier to move the 180-lb product from place to place.
I’m super impressed with how it performed out of the box quietly and reliably over the past month. The screen is very intuitive and it feels like EcoFlow has thought about everything here.
While I didn’t have an opportunity to try it, the smart breaker box and the stacking capabilities of this battery mean it can work with any sized home as both a battery backup and an off-grid solution. I think there’s a big opportunity here to also charge the battery at low-cost hours and use the batteries to power the home during high-cost times. Stay tuned for more from EcoFlow.
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Japanese equipment giant Komatsu has added a not-so-giant electric excavator to its growing lineup of battery-powered construction equipment. The new Komatsu PC20E-6 electric mini excavator promises a full day of work from a single charge.
Komatsu says the design of its latest mini excavator was informed by data sourced from more than 40,000 working days of comparably-sized diesel excavators. The company found that, in 90% of its global customers’ mini excavator deployments, these vehicles are in active use for less than 3.5 hours per day.
“This defined the target for the required, reliable working time with the excavator,” reads the Komatsu web copy. “This result makes it possible for Komatsu to offer an attractively priced machine with a performance that exactly matches the requirements.”
Keeping costs down are relatively conservative specs. Komatsu chose to power the PC20E-6 with a 23.2 kWh battery pack sending electrons to an 11 kW (~15 hp), high-torque electric motors. Not exactly super impressive on paper, but the machine has an operating weight of 2,190 kg and enough juice for up to four (4) hours of continuous operation.
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More than enough, in other words, to have completed 90% of of those 40,000 work days the company analyzed.
Getting it done
PC20E-6 electric mini excavator; via Komatsu.
If, for some reason, that four hours’ runtime isn’t enough, an on-board charging option for 230V and 3kW charging power compatible with various plug adapters is standard, with an external DC quick charger for 400V and 12 kW charging as optional. In either case, it won’t be long before the machine is back at work.
To help the later adopters sleep well about their battery-powered investments, the PC20E-6 ships with Komatsu’s E-Support maintenance program, which includes free scheduled maintenance by a Komatsu-trained technician, a 3 year/2,000 hour warranty on the machine, plus a 5 year/10,000 hour warranty on the electric driveline. The company says the battery should last 10 years.
“The Komatsu E-Support customer program is included free of charge with every market-ready electric mini excavator and offers exclusive machine support,” said Emanuele Viel, Group Manager Utility at Komatsu Europe. “The bottom line is that the risk for the end customer is significantly reduced, especially when it comes to exploring the electrification advances in the industry.”
Komatsu hasn’t released official pricing quite yet, but has revealed that the P20E-6 will begin series production this October.
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Tesla has unexpectedly terminated a contractor’s contract at Gigafactory Texas, resulting in the layoff of 82 workers who were supporting the automaker’s production at the giant factory in Austin.
MPW Industrial Services Inc., an Ohio-based industrial service provider specializing in cleaning and facility management, has issued a new WARN notice, confirming that it will lay off 82 workers in Texas due to Tesla unexpectedly ending its contract with the company.
Here are the details from the WARN notice:
State / agency: Texas Workforce Commission (TWC).
Notice date: August 27, 2025.
Employees affected: 82
Likely effective date: September 1, 2025
Context from the filing/letter: layoffs tied to an unexpected termination of a major customer contract (Tesla—Gigafactory Texas, 1 Tesla Road); positions include 61 technicians, 7 team leads, 7 supervisors, 7 managers; no bumping rights; workers not union-represented.
In April 2024, Tesla initiated waves of layoffs at the plant, resulting in the dismissal of more than 2,000 employees in Austin, Texas.
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Since then, Tesla’s sales have been in a steady decline. While the automaker is expected to have a strong quarter in the US in Q3 due to the end of the tax credit, sales are expected to decline further in Q4 and the first half of 2026.
Many industry watchers have expected Tesla to initiate further layoffs due to the situation.
Electrek’s Take
We may be seeing the beginnings of a new wave of layoffs at Tesla, as the automaker typically starts with contractors.
To be fair, Tesla could also potentially end the contract unexpectedly for other reasons, but the timing does align with the need to cut costs and staff ahead of an inevitable downturn in US EV sales.
I think it’s inevitable that we start seeing some layoffs. I think Tesla will have to slow down production in the US to avoid creating an oversupply, especially in Q4-Q1.
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First, it was e-bikes, offering an efficient, effective, and low-cost way for teens and just about everyone to zip around town, yet drawing the temper of suburban traditionalists. Now golf carts are the new public enemy number one in suburbia, at least if you ask the growing number of online groups where residents complain about these small electric vehicles “clogging” their streets.
But beyond the hand-wringing, golf carts and their more sophisticated cousins known as Neighborhood Electric Vehicles (NEVs) or Low Speed Vehicles (LSVs), are quietly becoming a popular alternative to cars for short trips around US cities and suburbs.
While most people still associate golf carts with retirement communities in Florida or slow rides across 18 holes, street-legal versions have been around for the last few decades.
But these aren’t your grandpa’s bare-bones carts, complete with a golf pencil clip. Many now come with DOT seat belts, lights, turn signals, mirrors, backup cameras, and speed limiters that allow them to operate legally on roads up to 35 mph, as long as they meet all the federal requirements for Low-Speed Vehicles (LSVs).
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That means such vehicles are legally allowed to operate like cars, trucks, bicycles, or motorcycles on the vast majority of residential streets and a surprising portion of urban grids. In other words, for grabbing groceries, school drop-offs, or cruising to a friend’s house, they’re a practical, cheaper, and far greener substitute for firing up a 5,000-pound SUV.
The Club Car Cru adds extra luxury to the concept of an LSV
Golf carts have been slowly taking off for years, but the pandemic accelerated the trend. Sales of golf carts and LSVs spiked as families looked for safe, outdoor transportation and an easy way to get around their neighborhoods. Now, in cities all over the country, the sight of parents driving their kids to school or running errands in a cart is increasingly common. In some towns, petitions have even popped up with hundreds of residents asking for local ordinances to legalize them on more streets, according to the Daily Mail.
Of course, not everyone is thrilled. There’s growing backlash against the increase in golf carts on streets, with many residents calling them a “plague” and complaining that they’re taking up space on the roads, in parking lots, or creating unsafe conditions. While rare, there have been serious accidents too, with a handful of tragic cases highlighting the dangers of mixing small, lightweight carts with full-size vehicles. Critics argue that carts lack the crash protection of cars and don’t always fall under homeowners’ insurance policies if an accident happens.
But for every critic, there’s a supporter pointing out that golf carts take cars off the road, save money on fuel, and are no more dangerous than scooters or e-bikes – modes of transport that already share the streets. And major golf cart makers have been happy to respond to the demand with boosted sales and new models. Companies like E-Z-GO, Club Car, WAEV, Kandi, and others are all rushing new models to the market as more suburban commuters discover that their next electric vehicle might just cost a fraction of what they thought it would – and come with a better breeze, too.
The GEM microcars are classic LSVs that have brought smiles to families’ faces for decades
Electrek’s Take
If I didn’t know any better, I’d say it’s like the Karens are just following me around to poo-poo on any alternative vehicle I happen to drive that week. They’ve hit all my favorites. Pretty soon, they’ll be coming for my electric tractors, too!
But seriously, this feels like déjà vu. The same arguments we’ve heard for years against e-bikes are now being recycled against golf carts: too unsafe, too disruptive, too “different” from the car-centric status quo.
But the reality is, again, quite the same as e-bikes. These are small electric vehicles that make a ton of sense and are totally street legal, at least when they’re built correctly to conform to the proper laws.
They come with a lot of the same benefits, too. They’re cheap to operate, easy to park, perfect for short trips, and they prevent larger cars from needlessly clogging residential streets. Will they ruffle feathers among the kind of folks who have had one too many frisbees land in their yard? Perhaps. But much like e-bikes, their popularity is only going one direction – up.
I leave you with a few images of perhaps my favorite of all, the Kandi Mini. The nay-sayers can pull it from my cold, dead, golf
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