Description
When every ounce in your pack matters, the Nitecore NB10000 Gen4 earns its spot. This is the latest version of Nitecore's well-loved ultralight power bank, and it holds a dependable 10,000mAh of capacity in a slim body that tips the scales at roughly 143 grams, or about 5 ounces. That's light enough to disappear into a jacket pocket or a shoulder strap pouch, which is exactly why backpackers, trail runners, and everyday carry folks keep reaching for it. At 4.57 by 1.84 by 0.57 inches, it's close to the footprint of a smartphone.
What Sets the NB10000 Gen4 Apart
The big story here is the battery itself. The Gen4 uses a silicon-carbon anode cell, the same kind of chemistry showing up in flagship phones, which is how Nitecore squeezes this much energy density out of such a small package. Real-world capacity lands around 6,800mAh in Regular mode at a quick 3A, enough to refill most modern phones close to twice. There's also an Eco mode that bumps rated energy up to 7,200mAh at a gentler 1A for when you want to stretch every last bit. A long press on the touch button swaps between the two.
Built Tough for the NB10000 Gen4 Carbon Body
The shell is built from dual-sided carbon fiber sheets over a reinforced flame-retardant composite frame, so it shrugs off abrasion, punctures, and knocks that would dent a plastic bank. It carries an IPX7 waterproof rating, meaning it can handle heavy rain and even a short dunk in up to a meter of water. Independent testers have put it through drop tests and wet-weather trips and come away impressed with how well it holds together.
Charging and Everyday Use
Two USB-C ports let you top off a phone and a headlamp at the same time, each capable of up to 22.5W with PD and QC 3.0 support. Run both at once and total output settles around 15W. Pass-through charging means you can recharge the bank and power your gear simultaneously, and you can even chain multiple banks together. Clever touches round it out, including RGB port lights for finding the right port in the dark and a Knock to Wake feature that flashes the four-dot power gauge with a quick tap.
Key Specifications
- Manufacturer: Nitecore (Sysmax Tech)
- Model: NB10000 Gen4
- Manufacturer Part Number: NB10000GEN4
- UPC: 6952506498123
- Battery Capacity: 10,000mAh 3.9V (39Wh)
- Cell Type: Silicon-carbon anode Li-ion
- Rated Energy: 6,800mAh (Regular/3A) / 7,200mAh (Eco/1A)
- Ports: Dual USB-C
- Max Charging Speed: Up to 22.5W per port (PD & QC 3.0)
- Total Output (dual): 5V/3A, 15W max
- Input: USB-C: 5V/3A, 9V/2.22A, 12V/1.87A (22.5W max)
- Water Resistance: IPX7
- Construction: Carbon fiber sheets on reinforced composite frame
- Dimensions: 4.57 x 1.84 x 0.57 in (116 x 46.8 x 14.5 mm)
- Weight: Approx. 143g / 5 oz
- Color: Carbon
What’s Included
- Nitecore NB10000 Gen4 Power Bank
- USB-C Lanyard Charging Cable
Frequently Asked Questions
How many times will the NB10000 Gen4 charge my phone?
With its 10,000mAh capacity, the NB10000 Gen4 will top off most modern smartphones close to two full times. Nitecore rates it around 1.9 charges for a phone like an iPhone 15 Pro. Actual results vary with your phone's battery size and how low it is when you plug in.
Can the NB10000 Gen4 charge two devices at once?
Yes. It has dual USB-C ports, so you can power a phone and a headlamp or GPS at the same time. Each port handles up to 22.5W on its own, and when both are running the combined output settles around 15W.
Is the NB10000 Gen4 really waterproof?
It carries an IPX7 rating, which means it can handle heavy rain, damp conditions, and even brief submersion in up to a meter of water for about 30 minutes. It's built for wet trail days, not for use underwater. Dry off the ports before charging after it gets wet.
What is the Knock to Wake feature on the NB10000 Gen4?
Knock to Wake lets you tap the power bank to light up its four-dot indicator so you can check how much charge is left without digging around in your pack. Paired with the RGB port lights, it makes the bank easy to use in the dark or while wearing gloves. It's a handy touch for early starts and late-night camp setups.



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