Recommended Best Small Power Bank for 2025

Let’s keep it brief: you need power on the go, but carrying around a bulky brick? No thanks. That’s why choosing the best small power bank is essential—especially when travel and daily commutes are part of your routine. We’ve tracked down the smallest, pocket-friendly models that pack plenty of power without weighing you down. These compact chargers are designed to be effortlessly portable, slipping easily into any pocket or bag, while still delivering enough juice to keep your devices going. Get ready to meet the tiny titans set to lead the market in 2025, ensuring you’re always powered up and ready to roll.

Alt: Small power bank

3 Best Small Power Banks in 2025

Let’s explore the small power bank market and see which models stand out in 2025. Each of these selections offers something unique—whether it’s wireless charging, integrated connectors, or extra capacity. Rather than just focusing on battery size, we’ll highlight what makes each power bank special, helping you find the perfect fit for your needs.

1. Anker Nano Power Bank (5K, MagGo, Slim)

When compactness is key, the Anker Nano Power Bank (5K, MagGo, Slim) is practically unnoticeable. Measuring just 10.3 x 7.06 x 0.86 cm and weighing roughly the same as a set of keys, it slips into any pocket without adding bulk. It’s slimmer than most wallets but doesn’t skimp on performance.

This tiny power bank delivers MagSafe-like Qi2 15W wireless charging, a 20W wired charging option, and even includes a built-in foldable stand to prop up your phone. With smart app control via the Anker app, you get an ultra-portable power solution that feels much larger than its size suggests. Ideal for anyone who wants a compact device packed with clever features.

Key Features

• Ultra-thin and lightweight design
• Qi2 15W wireless charging
• 20W wired fast charging
• Smart app monitoring
• Foldable phone stand

2. Anker Nano Power Bank (22.5W, Built-In USB-C Connector)

If you’re fed up with forgetting cables or untangling wires, this one’s for you. Weighing just 100 grams and roughly the size of a lighter, the Anker Nano Power Bank (22.5W, Built-In USB-C Connector) is all about grab-and-go ease. Its integrated flip-out USB-C connector folds neatly into the body, ready when you are.

It delivers a powerful 22.5W fast charge, topping up most phones in under an hour. Plus, it’s made using 75% recycled materials, making it as eco-friendly as it is dependable. Perfect for Android users, iPad owners, and iPhone 15 users seeking speed, sustainability, and simplicity—all in a pocket-sized package.

Key Features

• Built-in USB-C connector
• Compact, cable-free design
• Weighs just 100g
• Eco-friendly recycled materials

Alt: Anker Nano Power Bank 22.5W, Built-In USB-C Connector

3. Anker MagGo Power Bank (10K, Slim)

Need extra power without lugging around a bulky brick? The Anker MagGo Power Bank (10K, Slim) strikes the perfect balance. Measuring 1.47 x 7.06 x 10.4 cm, it’s impressively slim given its large battery capacity. Designed for those who require all-day power in a size that easily fits in a jacket or bag pocket.

Its MagSafe-style wireless charging attaches magnetically to your iPhone for effortless charging, and the dual-device capability lets you charge wirelessly and via USB-C simultaneously. Whether travelling, commuting, or simply glued to your phone, this sleek powerhouse provides dependable power whenever you need it.

Key Features

• Slim 10,000mAh capacity
• 15W magnetic wireless charging
• USB-C and wireless dual charging
• Compact, travel-friendly design
• Magnetic alignment for secure charging

Alt: Anker MagGo power bank 10000mAh slim

What to Look for in the Best Small Power Banks

When choosing the small power bank that suits you best, it’s not just about size. Here are some practical features and factors to consider:

• True portability: Opt for models weighing under 150 grams and compact enough to slip into your pocket or smallest bag. Devices shorter than 11 cm are ideal for everyday carry.
• Charging speed: Fast charging is essential. Look for USB-C Power Delivery (PD) or Quick Charge support (15W, 20W, or even 22.5W) to ensure your gadgets recharge quickly, whether you’re at a café or on the Tube.
• Wireless vs. wired: Decide if you prefer the ease of wireless charging (such as MagSafe or Qi2) or a built-in connector for direct plugging in. Wireless suits iPhone users, while a built-in USB-C is great for Android and newer iPhone 15 models.
• Battery capacity: 5,000mAh is ideal for emergencies or a single full charge, whereas 10,000mAh is better for longer trips, sharing, or charging multiple devices.
• Built-in features: Extras like integrated cables, fold-out stands, or LED battery indicators can add real convenience.
• Durability & materials: Choose robust, high-quality materials—some models even use recycled plastics—for everyday use and travel. A sturdy design helps your power bank withstand drops and knocks.
• Safety & compliance: Ensure your power bank complies with EU safety standards and includes protection against overheating, overcharging, and short circuits. This is especially important when flying—most airlines permit power banks under 100Wh (around 27,000mAh) in hand luggage.

Conclusion

In today’s increasingly mobile and connected world, the best small power bank has evolved from a simple accessory into an essential gadget. As we’ve seen, 2025’s innovations pack impressive power into remarkably compact designs, keeping your devices charged without the bulk. Say goodbye to hunting for wall sockets or lugging heavy chargers—embrace the convenience and freedom these powerful mini chargers offer for your digital lifestyle!

FAQs

What is the best small power bank?

The Anker Nano Power Bank (5000mAh MagGo Slim) is the standout choice. Measuring just 103 × 70.6 × 8.6 mm—credit-card thin—it provides 15W Qi2 wireless charging at genuine MagSafe speeds and 20W USB-C input/output for fast wired recharging. Plus, it features a handy fold-out stand and full IoT control via the Anker app, making it ideal for charging on the go.

What is the best cheap power bank?

The Anker Nano Power Bank (22.5W, Built-In USB-C Connector) is one of the best budget-friendly options. Its fold-out USB-C plug means no need for extra cables, and 22.5W bidirectional charging powers up your phone in minutes. With 5000mAh capacity, UKCA certification, and an ultra-compact design, it fits easily into any pocket. Priced under £30, it’s a real bargain.

What is the best power bank size?

The ideal power bank size depends on your needs, but for most people, 10,000mAh strikes a great balance between portability and capacity. It typically charges a smartphone 1–2 times, perfect for everyday use, commuting, or short trips. If you need to charge multiple devices or want more backup power, consider a 20,000mAh model—however, for daily use, 10,000mAh is usually sufficient.

How many watts should a good power bank have?

For basic smartphone charging, a power bank with 10W to 18W output is adequate. For tablets or larger phones, look for 18W to 30W. For laptops or power-hungry devices, opt for 30W to 100W or more. The appropriate wattage depends on the devices you’re charging—higher output means faster, more efficient charging for bigger gadgets.