For power users loaded with a laptop, tablet, drone, a robot, and, of course, a smartphone, the ordinary power bank options do not make the cut. The amount of power required to keep these gadgets juiced up is considerable, especially when on the go. The only solution is a custom-made power bank that suffices all the needs of your power-hungry gadgets.

A custom-built portable power station offers a high-capacity solution for people who need to run multiple devices without reliable access to wall power. Standard consumer power banks are often too limited for users carrying a laptop, phone, tablet, router, and other gear at the same time, especially in remote or mobile situations. To solve this problem, creator Luq1308 developed the Omnibus 4×8, a DIY backpack-friendly power bank with enormous capacity and flexible output options.

Designer: Luq1308

The heart of this project is a dense battery pack made from 32 brand-new 18650 lithium-ion cells arranged in a 4S8P configuration. Each cell is rated at 3000 mAh, and when assembled into the pack and scaled for usable voltage, the complete system delivers roughly 96,000 mAh, equivalent to about 345 watt-hours (Wh) of stored energy. This substantial capacity makes it suitable for powering a range of electronics for prolonged periods without recharging. Critical to the build is a battery management system (BMS) rated for 4S and 30 amps. The BMS monitors and balances the individual cells, prevents overcharging and deep discharge, and includes multiple safety fuses. The system also draws very little power at rest, with a standby current of less than 400 microamps, helping to preserve stored energy when the unit is not in active use.

The Omnibus 4×8 offers a wide range of outputs to suit both everyday gadgets and more demanding equipment. There are four USB-C ports, each capable of delivering up to 36 watts, which is enough to charge phones and tablets simultaneously. A 100 W bidirectional USB-C port supports fast laptop charging and can also accept power input from compatible charging sources. For broader custom needs, a DC jack provides adjustable outputs between 2.7 V and 20 V, and a high-wattage XT60 connector can handle loads exceeding 400 W. A dedicated 150 W AC outlet enables the use of small appliances through an inverter, expanding the range of devices that can be supported.

Inside the power station, an ESP32-C3 microcontroller oversees system operations. It reads real-time data such as voltage, current, and temperature from sensors and displays this information on a 1.3-inch OLED screen with simple navigation buttons. Four temperature sensors monitor the battery pack, heatsinks, and inverter, and dual 40 mm cooling fans are triggered as needed to manage heat during high loads. Custom aluminum heatsinks with thermal pads are included to further reduce thermal stress.

The enclosure combines hand-cut G10 fiberglass plates for strength with 3D-printed ABS plastic sides in a subdued matte black finish. Brass spacers and mesh vents enhance airflow and protect internal components while maintaining a rugged aesthetic suitable for outdoor use. Internally, thick-gauge silicone wiring and a perfboard distribution bus with fuses connect the various modules safely and efficiently.

One notable feature of this DIY build is its adaptability. The inverter was modified to work across the full battery voltage range, and the system can accept solar input with maximum power point tracking (MPPT) for efficient off-grid recharging. All design files have been made open source on GitHub, allowing others to replicate or expand on the concept.

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Digital nomads, field photographers, and mobile creatives share a common frustration: needing wall outlet power in places that don’t have walls. USB power banks handle phones and tablets, but cameras, projectors, and portable monitors still demand actual AC power. The world’s slimmest AC power bank exists because someone finally asked the right question: why do portable power stations look like car batteries instead of something you’d actually pack? The Noomdot N1 brings 70W of pure sine wave AC output to a device thin enough to slip into the laptop sleeve of a standard backpack.

At 16mm thick, it’s built around portability rather than maximum runtime. The semi-solid-state battery delivers approximately 40 minutes of continuous output at full 70W load, or several hours for lower-draw devices like LED lights or camera batteries. That’s not camping-weekend capacity, it’s designed for day trips, flights, and situations where outlets exist but aren’t convenient. The unit stays flight-safe under 100Wh limits, recharges in 90 minutes, and includes both USB-C PD output and pass-through charging. It’s live on Kickstarter at early pricing before the $259 retail launch.

Designer: PB-ELE

Click Here to Buy Now: $169 $259 ($90 off) Hurry! Only 17 of 200 left.

Years ago, a company called Memobottle had a brilliant, simple idea: since our bags are full of flat things like books and laptops, why are our water bottles round? The Noomdot N1 is the Memobottle of portable power, born from that same flash of spatial intelligence. It abandons the dense, pocket-bulging brick in favor of a slim slab of milled aluminum designed to slide into the forgotten spaces of a laptop sleeve or document pouch. This design is not an aesthetic choice; it is a fundamental understanding of the modern carry ecosystem. The N1 is engineered to be a good citizen in a world of flat devices, integrating seamlessly rather than demanding you build your bag around its awkward shape.

The use of a semi-solid-state battery is what enables this form factor without compromising on safety or longevity. While not a true solid-state cell, this hybrid chemistry significantly reduces the amount of volatile liquid electrolyte, leading to better thermal stability and a much slower rate of degradation. The claim of retaining 99% capacity after 100 full charge cycles is a direct benefit of this technology. For anyone who has felt the disappointment of a lithium-ion pack that barely holds a charge after a year, this focus on durability is a welcome and practical innovation. It reframes the device as a lasting piece of essential kit.

The main event is, of course, the 70W AC outlet. Its pure sine wave inverter is the kind of detail that professionals appreciate, ensuring clean, stable power that will not harm sensitive electronics. This is what separates it from cheaper, modified sine wave alternatives that can introduce electrical noise or even damage delicate circuits in cameras and audio gear. The inclusion of a 60W USB-C PD port is a nod to modern workflows, allowing it to charge a laptop directly or be slowly recharged itself. For a quick turnaround, the dedicated DC input remains king, refueling the entire 20,000mAh capacity in a scant 90 minutes.

Packing an inverter into a 16mm-thin chassis is a thermal challenge, and the N1 addresses this with a feature I’ve never seen in a power bank: an active cooling fan. An internal 6000 RPM fan kicks in during AC output to pull heat away from the core components, ensuring the device can sustain its peak performance without overheating. It is a pragmatic, if slightly brute-force, solution. The tradeoff is acoustics. While the fan is likely tuned to be as quiet as possible, it will not be silent… but that’s honestly a tiny price to pay for running a bunch of appliances or charging gadgets off a ‘wall-less power outlet’.

The N1 is a tool for a very specific mission: bridging the gap when AC power is needed for a short, critical period. It is for the wedding photographer who needs to juice up strobe batteries between the ceremony and reception. It is for the consultant who needs to run a projector for a 30-minute pitch in a conference room with no available outlets. Its 40-minute runtime at maximum load defines its purpose clearly. This is not an off-grid power solution for a weekend in the woods; it is a mobile professional’s get-out-of-jail-free card, ensuring a dead battery never becomes a single point of failure.

An IPX4 rating means it can shrug off a sudden rain shower, and passing a 1-meter drop test suggests it can survive being fumbled out of a backpack. These are not features one typically finds on power banks, and they speak to an understanding of the chaotic nature of travel and fieldwork. Combined with its TSA-friendly sub-100Wh capacity, the N1 is one of the few AC power sources truly designed from the ground up to leave the house and see the world, legally and safely.

You get to choose between two variants – 110V and 220V (depending on the country you live in and the rated voltage its appliances operate on). The Noomdot N1 ships along with a DC adapter for charging it, at a fairly discounted price of $169 ($90 less than its MSRP of $259). The device ships globally starting May 2026.

Click Here to Buy Now: $169 $259 ($90 off) Hurry! Only 17 of 200 left.

The post World’s Slimmest AC Power Bank Can Run Appliances And Charge Your Laptop At Just 0.6 Inches Thick first appeared on Yanko Design.

The modern tech user’s bag has become a graveyard of tangled cables, forgotten adapters, and bulky chargers that somehow multiply when you’re not looking. You’ve got the laptop charger, the phone charger, the USB-C cable that works with some devices but not others, and maybe a power bank thrown in for good measure. Every business trip or study session involves hunting through this electronic spaghetti to find the right combination of cables and adapters.

TORRAS apparently looked at this universal chaos and decided there had to be a better way to handle our charging needs without turning every bag into a cable management nightmare. Their Flexline 67W retractable charger and MiniMag power bank represent two different approaches to solving the portable power problem, each addressing specific pain points that anyone juggling multiple devices will immediately recognize and appreciate.

Designer: TORRAS

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Flexline 67W Retractable Charger: Engineering Meets Everyday Convenience

The Flexline 67W takes a radically different approach by integrating everything you need into one compact device that’s smaller than most laptop chargers alone. The built-in retractable USB-C cable extends smoothly up to 1 meter with a stepless adjustment mechanism that feels genuinely satisfying to use. Unlike those cheap retractable cables that jam or snap after a few months, this system is engineered for over 10,000 pulls and tested to the point where it can literally suspend a suitcase.

What makes the retractable mechanism particularly clever is the magnetic Type-C head locking system that ensures precise alignment every time you connect or store the cable. The magnetic snap provides tactile feedback that confirms a secure connection, while the anti-jamming design means the cable retracts smoothly without getting stuck or requiring multiple attempts. This attention to mechanical detail transforms a simple charging action into something that feels engineered rather than just functional.

The dual USB-C charging capability addresses the reality that most people carry multiple devices that need power throughout the day. You can charge a laptop at up to 45W while simultaneously powering your phone at 20W through the additional USB-C port, with smart power allocation automatically adjusting output based on what’s connected. The second USB-C port accepts any standard cable, giving you flexibility for different devices or charging scenarios without limiting you to just the built-in retractable cable.

TORRAS has integrated serious thermal management technology that goes beyond what you’d expect from a portable charger. The Tora-Iceon intelligent thermal control system uses GaN III semiconductor technology, NTC dual chips, and AI temperature monitoring that checks thermal conditions 36,000 times per hour. This isn’t just about keeping the charger cool, but actively protecting your phone’s battery health by preventing the heat damage that fast charging can cause over time.

The engineering extends to practical durability features that matter for daily use. The foldable plug prevents scratches in your bag while keeping the overall footprint minimal, and the smooth, glossy exterior resists wear from constant handling. Universal voltage support means it works anywhere in the world, while compatibility with PD3.1, QC3.0, PPS, and Apple 2.4A protocols ensures fast charging for virtually any modern device you might own.

For business travelers and students, the Flexline 67W represents a genuine upgrade in both convenience and reliability. Instead of hunting through your bag for the right cable or adapter, everything you need is integrated into one device that’s actually smaller than most traditional laptop chargers. The retractable cable means you can pull out exactly the length you need for any situation, whether you’re working at a cramped airplane tray table or a spacious conference room.

The build quality reflects TORRAS’s commitment to longevity rather than planned obsolescence. With a two-year warranty and a claimed 10-year lifespan, the Flexline 67W is designed to outlast multiple device upgrade cycles. This approach reduces electronic waste while providing genuine value for users who are tired of replacing cheap chargers every few months when they inevitably break or stop working reliably.

MiniMag Power Bank: Ultra-Slim Wireless Charging Anywhere

The MiniMag power bank takes a different approach to portable power, prioritizing wireless convenience and ultra-slim portability over maximum capacity. At just 0.3 inches thick, it’s genuinely thinner than most smartphones and slides effortlessly into a pocket, wallet, or small bag without adding noticeable bulk to your everyday carry setup.

The aluminum alloy construction serves dual purposes, providing both heat dissipation for safe charging and a premium feel that matches high-end devices. The 5,000mAh capacity might seem modest compared to brick-sized power banks, but it’s perfectly sized for emergency phone charging or extending your device’s battery life during long days away from outlets without weighing you down. There’s also a 10,000mAh variant for those who want to pack an extra punch.

MagSafe compatibility makes the MiniMag particularly appealing for iPhone users who want truly cable-free charging. The magnetic alignment ensures a secure connection with compatible cases, while 7.5W wireless charging provides steady power without the heat buildup that can damage batteries. For faster charging or non-wireless devices, the 18W USB-C port handles wired charging efficiently, and you can charge two devices simultaneously.

The MiniMag’s real strength lies in its convenience for everyday scenarios. Whether you’re commuting, traveling, or just want backup power without the bulk, it provides reliable charging that doesn’t interfere with how you use your phone. Pass-through charging means you can charge both the power bank and your device simultaneously, while LED indicators keep you informed about remaining capacity without guesswork or surprise power outages.

Both products demonstrate how thoughtful engineering can transform mundane accessories into tools that genuinely improve daily life. The Flexline 67W and MiniMag represent a shift toward charging solutions that prioritize user experience, durability, and real-world convenience over just delivering power as cheaply as possible.

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The post Meet TORRAS Flexline 67W: The Retractable Charger That Tames Cable Chaos first appeared on Yanko Design.