Best Watch Mini Usb Power Banks in 2026

BUILT-IN CABLES POWER BANK - No more cluttered and tangled charging adapters and cables in your bag or desk! Lazy Pro portable charger with built-in charging cables gives you the convenience of fast charging your devices on the go, wherever you are, without needing extra cords or adapters. Super powerful and small, it's the perfect buddy for traveling, flying, or going out. So you can always charge your devices and be prepared for vivid pictures, live streams, or important calls.

SIMULTANEOUS CHARGING 4 DEVICES - Our external battery power bank can simultaneously fast charge 4 devices. Great for multi-electronic users or for sharing energy with friends and family. The portable battery pack is widely compatible with ALL iPhones, iPad, Samsung and Google Pixel devices and tablets. The extension type C and iPhone cables and built-in type C and USB ports feature 4 outputs and 2 inputs and a max of 3A output without overheating or overcharging your cell or tablet.

HUGE BATTERY CAPACITY IN MINI SIZE - The battery bank features an ergonomic design that fits your hand and your pocket for easy reach and fast charging on the go. With a size of 3.4x3.4x1.3 inches, it weighs only 0.5 lb, making it excellent for traveling, camping, and walking without adding extra weight to your bag, backpack or purse. The super powerful 15000 mAh battery cell capacity provides more than 5 charges making it the perfect battery charger for cell phones.

【Portable Wireless Charging Method】This portable charger for iphone supports 7.5W magnetic wireless charging and is compatible with Mag-safe devices such as the iPhone 12/13/14 series. The powerful magnetic attraction built into this magnetic charger for iphone secures your phone in place while charging, eliminating the need to align your device precisely for charging. It also provides better protection for your iPhone and prevents it from falling down.

【Alternate Charging Method Supported】You can use the USB-C charging port of this power bank to charge your device. This is a bi-directional charging port that can output 15W charging power to external devices, or provide 20W charging power to the power bank for storing energy. When using a 20W or higher adapter to charge the magnetic power bank, it can be fully charged in just 2 hours.

【Large Battery Capacity, Small Size Design】The 5000mAh battery provides up to 18.5 hours of extra usage time for your phone. The compact and lightweight mag-safe portable charger measures 4.13 x 2.62 x 0.5 inches, making it easy to carry in your pocket or bag. You can use this magnetic battery pack for magnetic wireless charging while making calls or playing games. Now, whether you're working outside or traveling, you can take it with you anytime, anywhere, because it's small and practical.

🔋【Smallest and Lightest 10,000mAh Power Bank】Ultra-compact portable power bank 10,000mAh 22.5W PD 3.0 & QC 3.0 portable chargers. Pocket Size, lightweight

🔋【Power Bank Fast Charging】Dual PD 3.0 and QC 3.0, The maximum output power can reach 22.5W, fast charging the device twice fast. The portable charger support passing through technology Which Can charge your devices while recharging

🔋【Wide compatibility】Dual USB-A & Typpe-C ports compatible with all the mobile devices. Battery pack support low-current charging can work with smaller devices like Bluetooth headphones, AirPods, fitness trackers, smart watches, etc

⚡Plug-in use: Amelema portable charger plugs directly into your phone and charges your phone whenever and wherever you want,no need to carry a cable with you. Built-in USB recharge cable makes recharging the mini power bank more convenient.

⚡High Capacity：5000mAh high-quality battery, The small portable charger can provide at least one full charge for most iPhones. Very suitable as a backup power supply for daily use.

⚡Quick Charge：With the smart charging IC, it provides the faster charging (5V/2.4A Max) for iphone. Safety circuit design avoids over discharge, over charge, short circuit or overload.

⚡Plug-in use: Amelema portable charger plugs directly into your phone and charges your phone whenever and wherever you want,no need to carry a cable with you. Built-in USB recharge cable makes recharging the mini power bank more convenient.

⚡Upgraded Capacity：5000mAh high-quality battery, light weight but big power can provide at least one full charge for most iPhones. Very suitable as a backup power supply for daily use or short trip.

⚡Quick Charge ：With the smart charging IC, it provides the faster charging (5V/2.4A Max) for iphone. Safety circuit design avoids over discharge, over charge, short circuit or overload.

🔋【Mag-Safe Portable Charger】Using the latest upgraded powerful magnetic suction technology in 2023, with a powerful magnetic suction core inside, specially designed for iPhone 14/14 Pro/14 Pro Max/14 Plus, 13/13 Pro/13 Pro Max/13 Mini, 12/12 Pro/12 Pro Max/12 Mini series design, you can take photos or play games anytime, anywhere while charging. (Reminder: This product is only suitable for magnetic shells, ordinary shells are not applicable).

🔋【Universal Compatibility】4 in 1 wireless power bank with cable, magnetic adsorption module and USB output port can charge 3 devices at the same time, which is more convenient and worry-free. Perfectly compatible with phones, iWatches, Airpods and laptops, Just have our wireless charger and share it with family and friends.

🔋【15W Max Wireless Charging & 22.5W PD Fast Charging】: The wireless portable charger supports 5W/ 7.5W/ 10W/ 15W (max) wireless fast charging, which can conveniently charge your QI certified devices fast charging (not only mobile phones, but also Airpods and iWatch). 18W USB-C (input/output) and 22.5W USB-A ports provide optimized charging of your devices up to 22.5W via cable, fast charging your phone up to 100% in 1.5 hours.

2023 Upgraded 2-in-1 Magnetic Wireless Charger for Apple Watch and iPhone:Compatible with Apple watch series (Ultra/8/7/6/SE/5/4/3/2/1) and iPhone (14/ Pro/ Pro Max/ Plus, 13/ Pro/ Pro Max/ mini, 12/ Pro/ Pro Max/ mini) simultaneously with compact design and strong magnetic for on-the-go charging. LATIMERIA portable battery pack also supports the case with mag-safe and wired charging for other devices with Type-C input port. Say goodbye to the annoying data cables.

Strong and Snappy: Just snap this magnetic battery pack on the back of your iPhone and iWatch, no more alignment problems. The built-in strong magnets keep the portable power bank in place and prevent slipping.

On-Demand Foldable Stand: The magnetic power bank is equipped with a foldable rubber skin-feel oil coating process bracket, which allows you to set your phone standing vertically or horizontally to have a comfortable viewing, and use it as a wireless iPhone and apple watch charging station. Press the power button twice to turn it off then used directly as a phone kickstand. You'll enjoy hands-free easy viewing on the travel.

[ Great Compatibility & Strong Magnetic ] Mag-Safe battery pack with the newest magnetic technology (stronger magnetic and nano adsorption), can directly hold the back of your iPhone 14/13/12 Series: iPhone 14, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 13, iPhone 13 mini, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 12 (Note: Need to be aligned with the magnetic suction, without cases or with mag-safe cases);The magnet on the power bank for iphone is strong ,it securely stays in place , the portable wireless charger offers a convenient and efficient charging . You will enjoy more portable charging experience with the Magsafe portable charger .

[ 10000mAh Capacity & Smart LED Display] 10000mAh Large capacity and high density battery design can provide all-day power. Large capacity of the magsafe power bank is great travel companion for you . The magnetic power bank can charge 2 times for iPhone14/13/12 Pro, about 1.5 times for iPhone 14/13/12 Pro Max & iPhone 14 Plus; You can know the remaining battery power through the clear numbers on the smart LED display, wireless charging logo and green PD fast charging logo, no need to guess the remaining power.

[ Upgraded Foldable Stand & Mini Design ] Magnetic power bank features a foldable stand to hold your iPhone (horizontally or vertically); The built in stand of the magnetic portable charger for iphone is sturdy enough to hold your phone .You can free your hands to watch videos or make video calls with friends; Weighing only 189g（104*68*21mm）, mini design allows you to put the magnetic wireless power bank in your pocket or backpack easily .

2023 Upgraded 2-in-1 Magnetic Wireless Charger for Apple Watch and iPhone:Compatible with Apple watch series (Ultra/8/7/6/SE/5/4/3/2/1) and iPhone (14/ Pro/ Pro Max/ Plus, 13/ Pro/ Pro Max/ mini, 12/ Pro/ Pro Max/ mini) simultaneously with compact design and strong magnetic for on-the-go charging. LATIMERIA portable battery pack also supports the case with mag-safe and wired charging for other devices with Type-C input port. Say goodbye to the annoying data cables.

Strong and Snappy: Just snap this magnetic battery pack on the back of your iPhone and iWatch, no more alignment problems. The built-in strong magnets keep the portable power bank in place and prevent slipping.

On-Demand Foldable Stand: The magnetic power bank is equipped with a foldable rubber skin-feel oil coating process bracket, which allows you to set your phone standing vertically or horizontally to have a comfortable viewing, and use it as a wireless iPhone and apple watch charging station. Press the power button twice to turn it off then used directly as a phone kickstand. You'll enjoy hands-free easy viewing on the travel.

【MagSafe Charger Stand】This charging station stand with its built-in holder. Enjoy to watch movies, face time, video call. Make sure you are using MagSafe case or naked iPhone 12 13 14. The view angle of the stand is adjustable between 0-90°.

【On-Demand Kickstand】 MagSafe battery pack with hidden stand to enjoy hands-free FaceTime with friends or watch your favorite show on Netflix. The stand is a useful addition on the travel - for example, watching a movie on the train is very enjoyable.

【Strong Magnetic Lock】 Powerful magnets securely lock to the back of your phone; the tested magnetic pull force is 15.9N, while other brands on the market are generally 10N.

【PD 100W Laptop Charger】AOHI 30000mAh portable power bank features a PD 100W USB-C port to provide enough power to fast charge a power-hungry laptop at full speed. For MacBook Pro 16’’, the portable charger revives it from 0% to 50% in about 41 minutes, and for MacBook Pro 13’’, revives it from 0% to 50% in just 37 minutes. With the other QC18W USB-A port, you can fast charge your phone and laptop simultaneously.

【Colossal 30000mAh Capacity】The PD fast charging portable charger with 30000mAh massive capacity provides about 0.83 charges for MacBook Pro 16’’, 1.42 charges for MacBook Pro 13’’, 6.5 charges for iPhone 13, 2.8 charges for iPad Pro 11’’ and 4.8 charges for Switch, providing several days of worry-free power while you’re traveling or on a business trip. (Note: 30000mAh is the total of the nominal capacity of the internal battery cells.)

【Rapid Recharge & Multiple Protection】With powerful 100W PD input, the high-capacity power bank itself can be fully recharged in about 2 hours by using a PD 100W wall charger (PD 100W wall charger not included). Moreover, AOHI’s superior safety system provides all-round protection including overcharge, overvoltage, over-temperature, short-circuit protection and more to ensure the safety of you and your devices.

✅【22.5W PD & QC4.0 Fast Charge】The small power bank supports Power Delivery (PD) and Quick Charge (QC3.0), providing an unprecedented high-speed charging experience. Three outputs (1 Type C and 2 USB A), up to 22.5W, can charge 3 devices at the same time, 4 times faster than normal charging. Quickly charge your iPhone 12 to 50% in 30 minutes.

✅【Small and Powerful Portable Charger】The smallest and lightest 20000mAh portable power bank on the market, only 4.25*2.71*1.03in, 296g. Perfect for everyday life, camping, travel and most pockets, allowing you to easily enjoy a full day of charging capacity. It's enough to charge the iPhone 12 4.8 times, the Samsung S21 3.4 times, the iPad mini 2.7 times, etc.

✅【LED Digital Display and Safety Device】We know that stupid indicator lights will never show you the exact remaining battery. Don't worry, Coolreall mini portable charger version with LED digital display helps you to know the battery status easily, the power display accuracy is from 0 to 100%. Smart safety protection prevents overcurrent, overheating and overcharging, providing you with high quality and safer products.

【100W Power Bank Fast Charge】Henhot Power bank features 100W PD 3.0 USB-C port provide enough power to fast charge a power-hungry laptop at full speed. Allowing you to fast charge your MacBook Pro 16-inch up to 36% in only 30 minutes. Meanwhile, the power bank itself can be fully recharged in about 2 hours by using a PD 100W wall charger (Adapter not included). It will be your best power battery during potential power outages the winter months.

【30000mAh Large Capacity】The PD fast charging portable charger with 30000mAh massive capacity provides about 1 charges for MacBook Pro 16", 1.42 charges for MacBook Pro 13", 5.4 charges for iPhone 14, 2.3 charges for iPad Pro 11", and most smartphones a total of 5 or 6 times. Providing several days of worry-free power when you are traveling or on a business trip, no need to worry about losing contact with anyone due to out of power.

【Two-way Fast Charging】The power bank houses a USB-C ports supporting 100W output and 65W input, plus a QC18W fast charging USB-A ports compatible with laptops, smartphones, and all low to high-power portable devices. With the QC18W USB-A port, you can also fast charge your phone and laptop simultaneously.

Safe and Fast Charging Pro Power banks: Power Bank is manufactured using the highest grade materials, Such as the fireproof shell, pass 10 safety protection design PCB motherboards, well-known brand A + grade polymer safety battery core, Pass strict 8 times safety test, please buy with confidence

22.5W Fast Charging Technology: The latest Supercharge Protocol, 22.5W PD3.0 PD4.0 Portable Phone Charger can revolutionize your charging speed experience, it can charge for iPhone13 from 0% up to 50% in 30 minutes, 3 times faster than the old 10W power bank

Power for 3 devices at once:  portable power bank with a built-in Type-C port (Input and Output) and two USB ports, it can charge three devices at the same time. Like cellphone, Apple Watch, Earphone and more

【100W Power Bank Fast Charging】The portable laptop charger power bank bi-directional USB-C port can be used as both input and output. With PD 3.0 technology, the PD 100W power supply can fully charge your 15" MacBook Pro 2018 from 0% to 100% in 1.5 hours and can be fully charged in 2 hours with the 65W wall charger and included 5A/100W USB-C cable

【Ultra-Large Cell Capacity】20,000mAh cell capacity laptop battery bank provides 5 charges for iPhone 12,more than 4 full charges for Samsung Galaxy S10, and over 2 and a half charges for iPad mini 5. Laptop power banks perfect for your next camping, hiking, meeting, business trip, and other outdoor activities

【3 Outputs Laptop Battery Pack】 Power Delivery With 2 Type-C PD ports (100W and 30W) and 1 USB-A ports ( QC3.022.5W), the 3 output ports provide fast charging for 3 mobile devices at the same time (maximum total output 130W), greatly enhancing the usage rate of the power supply and facilitating people's power needs

⚡【Grade A+ 36800mAh Battery & anti-explosion】⚡This Solar Power Bank has built-in Grade A+ 36800mAh Lithium polymer battery, It is anti-explosion, lightweight and durable. The solar charger has a high-performance solar panel and have more than 3000 times full cycle recharging lifetime, as 36800mAh capacity power stored in high-density lithium polymer battery, so the solar charger power bank has mini size and lightweight.

⚡【18W fast Charging & Multi-Functions】⚡The Power Bank support QC 3.0 with two 5V 3.1A 18W fast charging Outputs，It is also a portable power bank compatible with Phones, watches, headphones and other USB devices. The solar phone charger has 2 supper bright LED lights with 3 modes (normal, strong, SOS) and has a high-precision compass, In addition, it is equipped with a carabiner for hanging the power bank charger on your backpack while climbing, walking and camping.

⚡【Solar Panel Charging Mode 】⚡Limited by the small solar panel size, the Solar panel charging mode cannot offer you satisfied charging speed as its maximum charging speed is 5V*0.3A=1.5W, less than 1/12 of the charging speed with outlet, solar charging mode is used for emergency purpose , so It is highly recommended to do it that fully charge the Solar power bank with outlet before taking an outdoor trip.

⚡【Grade A+ 36800mAh Battery & anti-explosion】⚡This Solar Power Bank has built-in Grade A+ 36800mAh Lithium polymer battery, It is anti-explosion, lightweight and durable. The solar charger has a high-performance solar panel and have more than 3000 times full cycle recharging lifetime, as 36800mAh capacity power stored in high-density lithium polymer battery, so the solar charger power bank has mini size and lightweight.

⚡【18W fast Charging & Multi-Functions】⚡The Power Bank support QC 3.0 with two 5V 3.1A 18W fast charging Outputs，It is also a portable power bank compatible with Phones, watches, headphones and other USB devices. The solar phone charger has 2 supper bright LED lights with 3 modes (normal, strong, SOS) and has a high-precision compass, In addition, it is equipped with a carabiner for hanging the power bank charger on your backpack while climbing, walking and camping.

⚡【Solar Panel Charging Mode 】⚡Limited by the small solar panel size, the Solar panel charging mode cannot offer you satisfied charging speed as its maximum charging speed is 5V*0.3A=1.5W, less than 1/12 of the charging speed with outlet, solar charging mode is used for emergency purpose , so It is highly recommended to do it that fully charge the Solar power bank with outlet before taking an outdoor trip.

3-in-1: charge your phone, keep your cards safe, and enjoy hands-free viewing in a sleek, pocket-friendly package

Power in a Snap: simply attach the power bank to your phone to enjoy auto-on MagSafe-style charging on the go with powerful magnets that ensure a secure lock

Smart Card Storage: dynamic tension spring holds one or two cards equally securely while easy-access cutout makes removing them when you need them quick and easy

Plug-in use : MEZASON small Portable charger with built-in charging cable, allowing you to charge the iPhone anytime and anywhere,no need to carry the data cable, The Mini power bank is compatible with multiple iPhones, It's a good companion on your journey!

Upgraded Capacity：5000mAh high-quality battery, Mini size and big power can provide at least one full charge for most iPhones. The small portable charger is ideal for daily use or short trips.

Quick Charge ：With the smart charging IC, it provides the faster charging (5V/2.4A Max) for iphone.The cute power bank can charge the phone up to 80% in an hour,Safety circuit design avoids over discharge, over charge, short circuit or overload.Make the charging process safer.

【 Strong Magnetic Wireless Charging 】 With 3800 gauss of magnetism, just put our power bank close to wireless charging area of your mobile phone, and then our power bank automatically fast locate and start charging your devices with up to max 10W output wirelessly. it is perfect compatible with the direct Mag safe wireless charging of iPhone 14 / 14 Plus / 14 Pro / 14 Pro Max / 13 / 13 Mini / 13 Pro / 13 Pro Max / 12 / 12 Mini / 12 Pro / 12 Pro Max. If your other mobile phones have their own wireless charging function, just attach the magnetic ring ( included in the package ) on the wireless charging area of your phone, and then realize magnetic wireless charging function also.

【 Low Current Charging Technology for small devices 】 This power bank support low current charging mode and in this mode the power bank keeps the output on for about 2 hours to fully charge your devices. It is recommended to use this mode for low power accessory devices such as Bluetooth headsets, smart bands, smart watches ….etc. Most power bank in market do not support this Low current charging mode.

【 Compact design but powerful 38.5Wh big capacity 】 With compact size and Light weight, easy to carry out in your bag or even in your pocket ; It has large capacity of 10000mAh, but not all 10000mAh batteries are the same. Most power bank has a capacity of 37Wh, whereas our product has a capacity of 38.5Wh. Large capacity and compact size make you to use comfortably in any place.

【Two-way 65W Laptop Power Bank】65W Fast Charging Power Bank Allows your laptop a quick charging, fully charge your 15 "Mac Book Pro in Just 1.8 hours, The POIYTL 20000mAh portable charger will allow a single device to charge at full speed, as fast as if it was plugged to a wall outlet. It only takes around 2.5 hours to fully recharge the 20,000mAh battery pack with a 65W wall charger. Keep your laptop and phone always on the go!

【4 Outputs and 2 Inputs】Poiytl Portable charger houses 2 USB-C ports supporting 65W output and 65W input, plus 2 fast charging USB-A output ports, can charging 4 devices simultaneously. Intelligent adjustment of current distribution, to meet the simultaneous charging needs of smartphones, Tablets, AirPods, smart watch and other devices.

【Colossal 20000mAh Capacity】The PD fast charging portable charger with 20000mAh massive capacity provides about 2.5 times for iPhone 13 Pro Max, 3.4 times for the Galaxy S20 and 1.2 times for the MacBook Pro 13-inch, ideal for business trip and travel. (Note: 20000mAh is the total of the nominal capacity of the internal battery cells.)

[ HIGH CAPACITY ] 10,000mAh. 3.85V Nitecore Power Bank, extraordinary capacity for such a sleek, slim, and lightweight design. 40% lighter than typical power banks. Quality you expect from any Nitecore battery.

[ DURABLE ] This Nitecore battery bank is Constructed with a Carbon Fiber Polymer Hollowed Frame, making it perfectly rugged for any outdoor adventure you may embark on.

[ POWERFUL ] Can charge a smart phone up to 3 times, a true power bank with quick charge capabilities, making it one of the most "must have" Nitecore accessories.

[Magnetic Battery Power Bank For IPhone 14&13&12 Series] The Portable Battery Pack Has A Powerful Magnetic Core That Supports Magnetic Wireless Charging, And Is Designed Specifically For The IPhone 13/13 Pro/13 Pro Max/13 Mini, 12/12 Pro/12 Pro,

[Foldable Wireless Mobile Power Supply] The Magnetic Wireless Mobile Power Supply Has A Multifunctional Built-in Foldable Bracket That Allows Your Phone To Stay Upright For A Comfortable Viewing Angle. When Using Your Phone To Chat, Video, Or Watch Movies, Connect Your Phone Vertically Or Horizontally For A More Comfortable View.

[Stronger Magnetic Wireless Power Bank] Strong Magnetic Adsorption, No Need For Wires, And The Phone Can Be Glued To The Phone Without Falling. Super Strong Magnets Magnetically Adsorb In Place, Ensuring Perfect Alignment And Efficient Charging.

✅【PD 65W Power Delivery】This 50000mAh portable charger with type C output provides PD 65W fast charging, which can charge your MacBook Pro up to 50% in 30 minutes, bringing you a different fast charging experience.

✅【Ultra-Large 50000mAh Capacity】The USB C 50000mAh portable charger can charge MacBook Pro 14 5 times , iPad Mini 7 times, iPone 13 10.2 times. Gives you enough power for a whole week. Never worry about running out of power again. It is very convenient and practical for your daily life and outdoor activities.

✅【Dual Input & 4 Outputs】Unlike most power banks only with USB C input, this power bank with USB C 65W input and output is perfect for your new iPhone, iPad, Laptop and all other USB C devices. There are also USB 22.5W output and micro USB 22.5W input, giving you more possibilities. This portable charger can charge 4 devices at the same time, allowing you to share portable power with family and friends.

Made for Apple Watch/ iPhone/ iPod: 9000mAh Portable Apple Watch Charger is an amazing option for on-the-go charging of your Apple Watch and iPhone, Compatible with Apple Watch Series 6/Se/5/4/3/2 (Not compatible with Apple Watch Series 1 ), as well as iPhone/iPod Series.

Samll Body with Upgraded Capacity: 9000mAh power bank can provide about 2-3 charges for your phones, built-in cable are collapsible, supports charge almost all your smart devices, do not need to carry any extra charging cords.

User-friendly Design: Battery pack with a sleek matte exterior and soft LCD indicators to display the battery level. 9000mah mini power bank can be taken directly to the plane.

【Plug-in Fast Charging】The mini power bank with two way USB C plug, 5V/2A input and output, supports pass through charging, when recharging this mini charging bank it can fast charging for your phones like Samsung to 60% only needs 30 minutes.(Note: this power bank only for usb c devices, not for iPhone).

【Super Mini & Cute】Only 3*1.7*1 inch and 0.23lb, ultra-compact lipstick sized portable charger, easily fits in your pocket or purse when you're out at work or traveling. A cool and fashion power bank with simple color surface design, can be given as a gift to relatives and friends.

【Multi-functional design】Built-in type-c cable and foldable metal stand, the cable makes charging the mini portable charger more convenient and can be used as a lanyard to easy to carry. The metal stand on the back of the cute power bank can be used as a phone holder, and the angle can be adjusted at will, so that the phone can be easily placed horizontally or vertically, which is convenient for you to watch movies and make video calls.

【100W Laptop Power Bank】Crafted with 2 PD USB-C ports certified for PD 3.0 and PPS with a power output going up to 100W, allowing you to fast charge your MacBook Pro 16-inch up to 36% in only 30 minutes. Meanwhile, with the other QC18W USB-A port, you can fast charge your phone and laptop simultaneously.

【4 Outputs and 1 Inputs】100W laptop power bank houses 2 USB-C ports supporting 100W output and 65W input, plus 2 fast charging USB-A output ports compatible with laptops, smartphones, and all low to high-power portable devices.

【Colossal 20000mAh Capacity】The PD fast charging portable charger with 20000mAh massive capacity provides about 2.5 times for iPhone 13 Pro Max, 3.4 times for the Galaxy S20 and 1.2 times for the MacBook Pro 13-inch, ideal for business trip and travel. (Note: 20000mAh is the total of the nominal capacity of the internal battery cells.)