The Nitecore CARBO 20 runs on an 18V high-voltage platform combined with Active Balancing BMS technology, which significantly improves power transfer efficiency. The result is a usable energy of 67.5Wh from a 20,000mAh capacity, which is approximately 17% more usable energy than the previous CARBO 20000, and around 22% more than comparable 20,000mAh power banks on the market.
The Nitecore CARBO 20 delivers 65W maximum two-way fast charging, meaning it charges your devices at full speed and recharges itself just as quickly. Honeycomb magnesium alloy heat sinks and an embedded MCU with dual NTC thermistors provide real-time temperature monitoring, enabling sustained, stable full-power output with no power drop for over 55 minutes.
Dual USB-C ports let you charge two devices simultaneously, and with pass-through charging you can replenish the power bank while keeping your gear powered.
The carbon fibre shell of the CARBO 20 weighs just 22.3g, which is approximately 67% lighter than a plastic shell of equivalent strength. Combined with magnesium alloy heat sinks that are around 38% lighter than aluminium alternatives of the same volume, the total weight comes in at just 320g (11.29 oz) - roughly 28% lighter than a typical 20,000mAh power bank.
Multiple layers of waterproof protection inside and out, combined with a touch button design, deliver a full IPX8 waterproof rating with submersion protection to 2 metres, meaning the Carbo 20 is not just splash resistant, but genuinely weatherproof for outdoor use in rain, stream crossings, and wet conditions.
The built-in display screen gives you a clear, real-time view of battery percentage and charging status so there is no more guessing whether you have enough charge left for the descent. It's a simple, practical feature that makes a real difference when you're relying on the CARBO 20 to keep your devices powered.
The CARBO 20 complies with UN38.3 standards and is approved by multiple global certifications. With a typical energy of 77.6Wh, which is below the 100Wh UK Civil Aviation Authority (CAA) limit, it can be carried in hand luggage **Please check with your airline for precise requirements before travelling**

Available in Blue or Orange

Please note all power banks are sent via Royal Mail 48 Tracked, and not Royal Mail 24 Tracked or Special Delivery. Due to shipping restrictions, we are unable to send power banks to the Outer Hebrides, Scottish Highlands and surrounding areas, Channel Islands and Northern Ireland. Please see our delivery page for further details.

We are unable to accept returned power banks once they have been opened.