Nitecore’s latest power bank is the lightest and most compact yet
Nitecore has refreshed its popular NB10000 line with the Gen 4, and the result is a power bank that shaves off even more weight and bulk from an already impressive formula. At just 146 grams on a standard kitchen scale, the NB10000 Gen 4 is now the lightest and most compact 10,000mAh power bank available. For outdoor enthusiasts, ultralight backpackers, and endurance athletes who obsess over every gram, this is a significant step forward.
Key facts
- Price: $83.95
- Weight: 146g (152g with included USB-C lanyard cable)
- Dimensions: 1.45 x 11.6 x 4.68 cm
- Battery capacity: 10,000mAh / 39Wh
- Output: Up to 22.5W
- Charging protocols: PD, QC3.0, Huawei SCP
- Water resistance: IPX7
- Features: Pass-through charging, eco mode, RGB lighting, touch button
The quest for lighter gear
Anyone who has carried a traditional power bank on a multi-day hike knows the pain of hauling unnecessary weight. Many 10,000mAh batteries weigh between 180 and 250 grams, and some even exceed 300 grams when you factor in cables and casing. Nitecore has been fighting this trend for years, and the NB10000 series has long been a favorite among weight-conscious travelers. The Gen 4 continues that legacy by using a silicon-carbon anode, a battery technology that is increasingly found in flagship smartphones. This chemistry allows for higher energy density, meaning more capacity in a smaller, lighter package.
The difference between the Gen 3 and Gen 4 might sound small on paper, but for someone counting ounces, it matters. The Gen 3 already impressed with its 152-gram body, but the Gen 4 knocks that down to 146 grams. Add the included braided USB-C lanyard, which doubles as a 60W cable, and the total is still just 152 grams. That means the entire charging setup, battery plus cable, weighs the same as the previous model did without a cable.
Design and build
The NB10000 Gen 4 is constructed from carbon fiber sheets, giving it a sleek, premium look and a reassuringly stiff feel. It’s not a soft-touch plastic or a cheap metal shell; it’s a purposeful material that speaks to the product’s outdoor pedigree. The power bank is also rated IPX7 for water resistance, which means it can survive rain, splashes, and even temporary submersion in up to one meter of water. That’s exactly the kind of protection you want when you’re caught in a downpour on a mountain trail or accidentally drop your gear in a stream.
On the top edge are two USB-C ports, and Nitecore has added animated RGB lighting that flows around them. The lights are meant to help you locate the ports in a dark tent, and they do serve that purpose, but they also feel a bit gimmicky. The power bank uses a touch-sensitive button to wake the device and check the battery level, which is a change from the mechanical buttons on previous models. The touch button works reasonably well, even with wet fingers, but it’s not as satisfying as a physical click. Nitecore also includes a knock-to-wake feature: tap the top of the battery twice and the lights and battery indicator illuminate. In testing, this feature worked only about 75 percent of the time, which can be annoying when you’re fumbling around in the dark. Fortunately, both the RGB lighting and the knock-to-wake behavior can be disabled through a long press of the power button, allowing you to switch between full functionality and a more restrained, purely practical mode.
Charging performance
Despite its small size, the NB10000 Gen 4 is no slouch when it comes to output. It supports up to 22.5W over its USB-C ports, which is enough to charge smartphones quickly and even top up a 14-inch MacBook Pro in a pinch. The power bank supports Power Delivery (PD), Quick Charge 3.0 (QC3.0), and Huawei’s SCP protocol, covering a broad range of devices. In real-world testing, the 39Wh battery fully recharged an iPhone 15 Pro twice, with a few watt-hours to spare. That’s an excellent result for a 10,000mAh pack, and it demonstrates the efficiency of the silicon-carbon cell.
Pass-through charging is also supported, so you can charge the power bank and your phone at the same time. This is a convenient feature for travelers who have limited wall outlets or who want to maximize their charging time during a short stop. The Gen 4 also avoids the overheating and shutdown issues that affected the Gen 3 when it ran low on power. In testing, there was a brief interruption in power delivery when the battery was almost fully depleted, but it resumed almost immediately and didn’t cause any real problems. It was only noticeable because a measurement meter was attached; in normal use, no one would have noticed.
Efficiency and testing
Power bank efficiency is often overlooked, but it’s crucial for anyone who relies on a portable battery in the field. Nitecore claims a capacity of 39Wh, and in independent testing, the Gen 4 delivered 33.58Wh of usable energy, which translates to an 86.1 percent efficiency. That’s a strong result for a premium power bank and a slight improvement over the Gen 3, which delivered 33.33Wh. When you calculate the energy-to-weight ratio, the Gen 4 delivers about 229.98Wh per kilogram, or 220.90Wh per kilogram with the cable included. These are class-leading numbers and reinforce the device’s position as the best choice for ultralight enthusiasts.
The efficiency gains come from the silicon-carbon anode, which allows the battery to operate closer to its native voltage, reducing conversion losses. The lower internal resistance also means less heat is generated during charging and discharging, which further improves efficiency. In eco mode, the output is limited to a slow 5W (5V at 1A), which can be useful for charging low-draw devices like wireless earbuds, smartwatches, or headlamps. Eco mode prevents the power bank from automatically shutting off when the connected device draws very little current, and it also reduces heat waste, which can yield a bit more total charge capacity over time.
Usability and daily experience
In daily use, the NB10000 Gen 4 is a joy. It’s small enough to slip comfortably into a pocket, and the carbon fiber shell feels durable without being slippery. The simple four-element LED indicator for battery level is a welcome change from the tiny screens or confusing displays found on some power banks. It gives you just enough information to know when you need to recharge, without overcomplicating things. The dual USB-C ports are both capable of output, and the included braided lanyard cable is surprisingly sturdy and rated for up to 60W, so you can use it to charge a laptop directly if needed.
The RGB lights are the one feature that feels out of place on an otherwise minimalist product. They’re pretty, but superfluous. If you’re using the power bank in a dark tent, you’re likely carrying a headlamp anyway, and as noted, you can simply feel for the ports. The touch button is also a slight step backward from the mechanical button on the Gen 3, but it’s responsive enough in most conditions. The knock-to-wake feature, when it works, is useful if you’re wearing gloves, but the reliability issue is noticeable. These are minor complaints in the grand scheme of things, and they don’t detract from the power bank’s core mission.
Price and value
The biggest hurdle for most buyers will be the price. The NB10000 Gen 4 costs $83.95, which is a significant jump from the $64.95 launch price of the Gen 3 two years ago. It’s also two to three times more expensive than a typical 10,000mAh power bank, many of which can be found for $25 to $40. But you’re paying for more than just capacity; you’re paying for weight savings and build quality. The Gen 4 is about 50 grams lighter than many competing power banks, and for backpackers who measure pack weight to the decimal, that saving can be worth the premium. For cyclists, trail runners, and digital nomads who want the smallest possible charging solution without sacrificing capacity, the NB10000 Gen 4 is an easy recommendation.
The power bank’s IPX7 rating also adds value, as it can withstand the elements in a way that most cheap power banks cannot. A typical power bank might fail if dropped in a puddle or exposed to heavy rain, but the Gen 4 is built to handle those scenarios. That durability, combined with the class-leading energy density, makes it a compelling option for anyone who spends serious time outdoors. The only real negative is the price, but for the target audience, it’s a tradeoff worth making.
Nitecore has managed to make the lightest and most compact 10,000mAh power bank on the market without sacrificing performance. It charges quickly, supports pass-through, handles low-draw devices in eco mode, and offers excellent water resistance. The RGB lighting and touch button are minor quirks, but they can be mostly ignored or disabled. For endurance athletes, ultralight backpackers, or anyone who values portability above all else, the NB10000 Gen 4 is currently the gold standard in portable power.
Source:The Verge News