Startups

Kickstarter darling EcoFlow Delta battery generator is not what it seems

Comment

IMG 0543

The EcoFlow Delta is a new battery generator available on Kickstarter with incredible features claimed. Most are true, some are not.

Devices like the Delta offer incredible battery storage capacity. Designed for more than just recharging phones and tablets, these can run refrigerators, pumps, power tools and medical equipment. They’re great for emergencies, camping and general use where power is not available. Similar devices have been on the market for some years, so I was eager to verify EcoFlow’s claims.

The EcoFlow Delta can recharge from a wall outlet to 80% in an hour. It’s amazing. The GoalZero Yeti battery of a similar size takes 25 hours. This capability means the Delta can be used and then reused more than competitors.

The device is currently on Kickstarter, where it quickly acquired more than $2 million from over 2,000 backers. The device’s features listed on the Kickstarter page are clear, but after testing a pre-production unit, I found several of these advertised capabilities and features misleading or false.

The Delta is the latest product from EcoFlow. The company’s founder, Eli Harris, says it’s “The world’s strongest battery generator.” I found the Delta to be a competent battery generator with similar capabilities to competitors, but it’s hampered by loud fans.

In short, if you need a battery generator that can recharge much faster than others, the Delta is a great option. Otherwise, the GoalZero Yeti makes more sense for most people.

Battery generators are a safe and more portable option than their gas counterparts. There are no harmful fumes or fuel, allowing them to be used indoors, nearer the appliances or tools. Most often (though not with the Delta) they’re silent, too, making them perfect for a camping or hunting companion.

In real-world operation, this quick recharge time could come in handy. Say, on a construction site or in an emergency incident where power is still available, but out of reach of an extension cord — situations where loud gas generators are generally used. While the Delta is louder than other battery generators, it is not as loud as a gas generator.

The Delta battery comes packaged with a warning that the battery must be fully charged before use. I generally ignore warnings, but I followed this one and immediately plugged it in. Instantly, fans whirled to life and the screen popped on, displaying the current charge levels and how long it would take to get to 100%. The Delta was at 30% and would take 45 minutes to fully recharge. It worked as advertised, and 45 minutes later the battery was at 100%.

Recharging the Delta battery was a noisy affair. The fans are loud and continue to run after the battery is fully charged. Compared to a GoalZero Yeti, this was a shock. The Yeti is silent, where the Delta is not. I keep a Yeti 1400 in my basement, plugged in and ready to use. But with the Delta, even when the battery is fully charged, loud fans still run, presumably to keep the unit cool. EcoFlow says the shelf life on the Delta is over a year, where the GoalZero Yeti is six months. To me, I would rather have the battery constantly plugged into power so I know it’s ready to go when needed.

The Delta recharges without an AC power inverter (a power brick); it uses the same sort of cable as a desktop PC. The company says by passing through the inverter directly, the Delta can increase charging speed to more than 10 times the traditional AC to DC adapter cable. This also means it’s easier to replace a lost charging cable.

The Delta is much lighter than competing products and its design makes it easier to move. EcoFlow says it’s rugged, and it feels the part. Even my pre-production sample feels tough and ready to go to work. Large rubber pads keep the battery in place and the tough plastic feels more durable than competing products.

There are a handful of plugs and outlets around the device, including USB, USB-C and six AC outlets. It’s a lot, and similar in capacity to large gas generators. Most battery generators have much fewer AC outlets, though I’ve often supplemented the capability with small power strips.

IMG 0544
Kickstarter beware

The Delta is currently on Kickstarter for pre-order and exceeded its goal. I fear a good amount of backers will be upset to learn several notable advertised features are false or misleading.

The Delta is not silent. Under operation, either recharging a cell phone or running a power tool, loud fans run on both sides of the battery. These fans run when recharging the battery, too — even when the battery is fully charged. The Kickstarter page and video lists throughout that the Delta produces no noise.

ecoflow delta

These fans detract from the appeal of the Delta battery. They’re loud. You have to raise your voice to speak over them. Because of these fans, I wouldn’t take the Delta camping or use it in the backyard for a quiet get-together. During power outage situations, I wouldn’t want to sleep near it. But I would use it for power tools — like EcoFlow does in one of its demo videos.

Only one of the four videos on the Kickstarter page allows potential owners to hear the Delta battery. The third video on the page shows the battery powering a hammer drill. Six seconds into the video, the drill stops running, and the battery’s fans are audible.

There are a handful of competing batteries that operate without noisy fans. I’ve taken GoalZero’s Yeti batteries camping and they’re great despite their heft. They’re truly silent and can still recharge from solar panels and car batteries. I’ve used battery generators from Jackery, too, and those are also silent.

I spoke with EcoFlow CEO and founder Eli Harris during the run-up of this review. He was clear that EcoFlow’s main competitor is not other large batteries, but rather small gas generators available from Honda and others. And that makes a lot of sense. Those are the best-selling generators available, and widely used for emergency and convenience. These small generators are loud, and the EcoFlow Delta is quieter than those options while still offering most of the power capabilities.

When asked why the Kickstarter page is misleading, he said “that fallacy has never been called out” and he would check with his team about the use of “superlatives and blanket statements.” Three days later, the Kickstarter page still lists the false claims.

EcoFlow claims the Delta battery can run a variety of power tools, including drills, circular saws, power washers and welders. I found this capability hit or miss. Despite some tools being under the claimed amperage and wattage of the Delta battery, the battery wouldn’t power my small or large circular saw or power washer. EcoFlow also claims the battery can recharge a Tesla; it doesn’t recharge my Chevy Volt.

Many tools require extra power when starting up, and I found most of these surge requirements to exceed the capabilities of the Delta battery. This is the same with other batteries like the GoalZero Yeti. In fact, I couldn’t find one tool in my workshop that the Delta powered and the Yeti did not; they worked the same for me, and I have a lot of tools.

Don’t mistake what I’m saying. The EcoFlow Delta has impressive capabilities, mainly around its recharge capabilities. This makes it an attractive option for the right use. It’s compact and solid. It has a lot of outlets and is easy to move. This could be a lifesaver in emergency situations where a person still has access to power.

The Delta has some downsides just like other battery generators. It doesn’t offer a dramatic increase in electrical output over competitors, so don’t expect this battery to power larger devices. Don’t expect a silent operation, either. This massive battery is loud though; I admit, that’s a relative term. It’s louder than other battery generators but less loud than a gas generator.

I would rather have a silent battery generator that recharges slowly versus a noisy, fast-recharging battery. I use my battery generators camping and around the house when the power goes out. The Delta makes sense on a construction site or when providing power is priority. I just can’t get over the loud fans.

More TechCrunch

Dating app maker Bumble has acquired Geneva, an online platform built around forming real-world groups and clubs. The company said that the deal is designed to help it expand its…

Bumble buys community building app Geneva to expand further into friendships

CyberArk — one of the army of larger security companies founded out of Israel — is acquiring Venafi, a specialist in machine identity, for $1.54 billion. 

CyberArk snaps up Venafi for $1.54B to ramp up in machine-to-machine security

Founder-market fit is one of the most crucial factors in a startup’s success, and operators (someone involved in the day-to-day operations of a startup) turned founders have an almost unfair advantage…

OpenseedVC, which backs operators in Africa and Europe starting their companies, reaches first close of $10M fund

A Singapore High Court has effectively approved Pine Labs’ request to shift its operations to India.

Pine Labs gets Singapore court approval to shift base to India

The AI Safety Institute, a U.K. body that aims to assess and address risks in AI platforms, has said it will open a second location in San Francisco. 

UK opens office in San Francisco to tackle AI risk

Companies are always looking for an edge, and searching for ways to encourage their employees to innovate. One way to do that is by running an internal hackathon around a…

Why companies are turning to internal hackathons

Featured Article

I’m rooting for Melinda French Gates to fix tech’s broken ‘brilliant jerk’ culture

Women in tech still face a shocking level of mistreatment at work. Melinda French Gates is one of the few working to change that.

22 hours ago
I’m rooting for Melinda French Gates to fix tech’s  broken ‘brilliant jerk’ culture

Blue Origin has successfully completed its NS-25 mission, resuming crewed flights for the first time in nearly two years. The mission brought six tourist crew members to the edge of…

Blue Origin successfully launches its first crewed mission since 2022

Creative Artists Agency (CAA), one of the top entertainment and sports talent agencies, is hoping to be at the forefront of AI protection services for celebrities in Hollywood. With many…

Hollywood agency CAA aims to help stars manage their own AI likenesses

Expedia says Rathi Murthy and Sreenivas Rachamadugu, respectively its CTO and senior vice president of core services product & engineering, are no longer employed at the travel booking company. In…

Expedia says two execs dismissed after ‘violation of company policy’

Welcome back to TechCrunch’s Week in Review. This week had two major events from OpenAI and Google. OpenAI’s spring update event saw the reveal of its new model, GPT-4o, which…

OpenAI and Google lay out their competing AI visions

When Jeffrey Wang posted to X asking if anyone wanted to go in on an order of fancy-but-affordable office nap pods, he didn’t expect the post to go viral.

With AI startups booming, nap pods and Silicon Valley hustle culture are back

OpenAI’s Superalignment team, responsible for developing ways to govern and steer “superintelligent” AI systems, was promised 20% of the company’s compute resources, according to a person from that team. But…

OpenAI created a team to control ‘superintelligent’ AI — then let it wither, source says

A new crop of early-stage startups — along with some recent VC investments — illustrates a niche emerging in the autonomous vehicle technology sector. Unlike the companies bringing robotaxis to…

VCs and the military are fueling self-driving startups that don’t need roads

When the founders of Sagetap, Sahil Khanna and Kevin Hughes, started working at early-stage enterprise software startups, they were surprised to find that the companies they worked at were trying…

Deal Dive: Sagetap looks to bring enterprise software sales into the 21st century

Keeping up with an industry as fast-moving as AI is a tall order. So until an AI can do it for you, here’s a handy roundup of recent stories in the world…

This Week in AI: OpenAI moves away from safety

After Apple loosened its App Store guidelines to permit game emulators, the retro game emulator Delta — an app 10 years in the making — hit the top of the…

Adobe comes after indie game emulator Delta for copying its logo

Meta is once again taking on its competitors by developing a feature that borrows concepts from others — in this case, BeReal and Snapchat. The company is developing a feature…

Meta’s latest experiment borrows from BeReal’s and Snapchat’s core ideas

Welcome to Startups Weekly! We’ve been drowning in AI news this week, with Google’s I/O setting the pace. And Elon Musk rages against the machine.

Startups Weekly: It’s the dawning of the age of AI — plus,  Musk is raging against the machine

IndieBio’s Bay Area incubator is about to debut its 15th cohort of biotech startups. We took special note of a few, which were making some major, bordering on ludicrous, claims…

IndieBio’s SF incubator lineup is making some wild biotech promises

YouTube TV has announced that its multiview feature for watching four streams at once is now available on Android phones and tablets. The Android launch comes two months after YouTube…

YouTube TV’s ‘multiview’ feature is now available on Android phones and tablets

Featured Article

Two Santa Cruz students uncover security bug that could let millions do their laundry for free

CSC ServiceWorks provides laundry machines to thousands of residential homes and universities, but the company ignored requests to fix a security bug.

3 days ago
Two Santa Cruz students uncover security bug that could let millions do their laundry for free

TechCrunch Disrupt 2024 is just around the corner, and the buzz is palpable. But what if we told you there’s a chance for you to not just attend, but also…

Harness the TechCrunch Effect: Host a Side Event at Disrupt 2024

Decks are all about telling a compelling story and Goodcarbon does a good job on that front. But there’s important information missing too.

Pitch Deck Teardown: Goodcarbon’s $5.5M seed deck

Slack is making it difficult for its customers if they want the company to stop using its data for model training.

Slack under attack over sneaky AI training policy

A Texas-based company that provides health insurance and benefit plans disclosed a data breach affecting almost 2.5 million people, some of whom had their Social Security number stolen. WebTPA said…

Healthcare company WebTPA discloses breach affecting 2.5 million people

Featured Article

Microsoft dodges UK antitrust scrutiny over its Mistral AI stake

Microsoft won’t be facing antitrust scrutiny in the U.K. over its recent investment into French AI startup Mistral AI.

3 days ago
Microsoft dodges UK antitrust scrutiny over its Mistral AI stake

Ember has partnered with HSBC in the U.K. so that the bank’s business customers can access Ember’s services from their online accounts.

Embedded finance is still trendy as accounting automation startup Ember partners with HSBC UK

Kudos uses AI to figure out consumer spending habits so it can then provide more personalized financial advice, like maximizing rewards and utilizing credit effectively.

Kudos lands $10M for an AI smart wallet that picks the best credit card for purchases

The EU’s warning comes after Microsoft failed to respond to a legally binding request for information that focused on its generative AI tools.

EU warns Microsoft it could be fined billions over missing GenAI risk info