Mobile Battery Manufacturers: A Comparison of Their Strengths! 10 Products You Should Know Before Choosing

Smartphones, tablets, laptops—carrying multiple devices every day, modern people find portable batteries an essential item. They are reliable partners that also come in handy during disasters. However, with various products available from different manufacturers, and many points to consider such as capacity, charging speed, and size, many may find it difficult to decide which one to purchase.

In this article, we thoroughly examine 49 latest models from popular portable battery brands like CIO, UGREEN, Anker, and Elecom. We select top-selling items from Amazon, Rakuten Ichiba, Yahoo! Shopping, and other platforms, and compare them based on five key points. We provide a comprehensive guide to help you find the perfect mobile battery for your needs.

The 5 Points We Evaluated

✓ Actual capacity ratio
✓ Portability
✓ Charging speed for smartphones
✓ Charging speed for the device itself
✓ Wireless charging performance

Carefully Selected Rankings of Truly Usable Mobile Batteries

【1st Place】SMARTCOBY Pro SLIM CABLE (CIO) ★4.6/5.0

Slim yet high-capacity. An excellent choice with built-in cable for convenience

CIO’s “SMARTCOBY Pro SLIM CABLE” is highly favored by users prioritizing portability. Its main feature is an integrated USB Type-C cable within the body, eliminating the hassle of carrying a separate cable and minimizing luggage when going out.

Test results show it achieves 75.98% of its stated capacity. Many competitors fall well below their listed capacity, but this product secures a capacity close to its stated value, ensuring accurate estimates of charging cycles.

With a thickness of only 1.8cm and an area of 63.77cm², it’s compact enough to fit comfortably in a pocket alongside your smartphone. The maximum measured output is 39W, capable of charging tablets and laptops quickly. The device itself can be recharged at up to 35W input, allowing rapid top-up even just before leaving in the morning.

Recommended for: Those looking for a daily-carry mobile battery, and those who want to avoid cable clutter

Advantages

• Minimal discrepancy from stated capacity
• Compact size close to business card dimensions
• Supports fast charging with up to 39W output
• Quick recharging of the device itself

【2nd Place】TRIO (CIO) ★4.59/5.0

Multi-port support. Excelling at simultaneous charging of multiple devices

CIO’s “SMARTCOBY TRIO” is ideal for users who want to charge multiple devices at once. It boasts a large capacity of 20,000mAh and high output of 67W, equipped with two USB Type-C ports and one USB-A port. It can power smartphones, wireless earbuds, and laptops simultaneously.

The capacity test shows 75.23%, with almost no discrepancy from the listed capacity. It reliably provides the expected number of charges, making it trustworthy for long trips or business trips.

At 3.0cm thick and 65.68cm² in area, it’s slightly bulkier but still compact enough for bags or backpacks. With a maximum output of 71W, it can fully charge a smartphone in a short time. Excellent for quick top-ups during busy mornings or on the go. The maximum input is also 67W, enabling efficient recharging of the power bank itself.

Recommended for: Business professionals carrying multiple devices, those prioritizing rapid charging

Advantages

• Capacity close to the listed value
• Supports multiple devices simultaneously
• Max output of 71W for fast charging
• Fast recharging of the power bank

【3rd Place】SMARTCOBY Pro SLIM (CIO) ★4.54/5.0

Thinness is key. The perfect companion for daily portability

CIO’s “SMARTCOBY Pro SLIM” packs 10,000mAh into an astonishingly slim profile of just 16mm thick. It can be stacked on top of a smartphone without feeling bulky. It’s ideal for everyday carry, fitting comfortably in pockets or bags.

The surface has a textured finish that resists scratches, enhancing durability. It features three USB-C ports, allowing charging of up to three devices simultaneously. The measured capacity is 69.47%, slightly below the nominal, but still sufficient for expected charging cycles.

Supports fast charging up to 38W, quickly alleviating smartphone battery depletion. It can also be recharged at up to 35W, making it practical for users who want quick turnaround times. Its ultra-thin design makes it a highly usable option for those who prioritize portability.

Recommended for: Those who value slimness for daily carry, students, freelancers

Advantages

• Ultra-slim, highly portable design
• Supports fast charging up to 38W
• Quick recharging of the device
• Practical capacity level

【4th Place】Uno Built-in Cable Mobile Battery (UGREEN) ★4.53/5.0

High actual capacity ratio and excellent usability. A balanced masterpiece

UGREEN’s “Uno Built-in Cable Mobile Battery” features an integrated USB Type-C cable and 10,000mAh capacity with support for three simultaneous charges. It has a display to monitor charging status in real time.

The capacity test shows 82.26%, a high ratio with minimal error from the stated capacity. It reliably provides the expected number of charges, suitable for daily use.

At 2.0cm thick and 80.68cm² in area, it’s easy to carry around. It fits comfortably in pockets or bags, making it ideal for commuting, school, or travel. With a maximum output of 35W, it enables quick charging of smartphones. The input is also fast at up to 30W, allowing quick recharging of the power bank itself, perfect for busy mornings.

Recommended for: Those seeking a good balance of charging speed and portability, users who want to monitor remaining capacity

Advantages

• Capacity closely matches the listed value
• Compact and easy to carry daily
• Supports fast charging up to 35W
• Display makes remaining capacity easy to check

【5th Place】Zolo Power Bank 10000mAh 30W MagGo (Anker) ★4.52/5.0

Wireless charging support. A must-have for iPhone users

Anker’s “Zolo Power Bank (10000mAh, 30W, MagGo)” is highly compatible with MagSafe-enabled iPhones. It features magnetic attachment for wireless charging without cables. The silicone surface prevents scratches on your device.

The actual capacity is 86.69% of the stated capacity, with almost no discrepancy, ensuring accurate estimates of usable charge.

Wired charging offers a maximum output of 33W, while wireless charging provides 7.5W, which is slower but convenient. For quick top-ups, connecting via cable is recommended. Its compact size allows easy carrying alongside smartphones, making it an attractive option for iPhone users who prioritize compatibility.

Recommended for: MagSafe iPhone users, those who want the convenience of wireless charging

Advantages

• High actual capacity ratio
• Compact and portable
• Wired charging up to 33W
• Magnetic attachment for stable wireless charging

【6th Place】Elecom Power Bank EC-C44LBK ★4.51/5.0

Large capacity and fast charging. Supports a wide range of devices

Elecom’s “Power Bank EC-C44LBK” features two Type-C ports and one Type-A port, compatible with laptops and various devices. It has a display showing remaining power, so you always know the current status.

The capacity test shows 78.20%, with minimal deviation from the nominal. It’s reliable for travel and business trips.

Supports up to 67W output, enabling fast charging for laptops and tablets, suitable for office workers and frequent travelers. Recharging the device is also quick at 67W max input. Despite a thickness of 3.1cm, its area of 78.00cm² makes it manageable to store in bags or pouches.

Recommended for: Business users who need to charge laptops, those prioritizing capacity for multiple devices

Advantages

• High and accurate capacity ratio
• Supports up to 67W for laptop charging
• Fast recharging of the device
• Display for remaining power

【7th Place】SMARTCOBY Ex03 SLIM PLUG ＆ CABLE (CIO) ★4.48/5.0

Equipped with AC plug, functioning as a 3-in-1 charger

CIO’s “SMARTCOBY Ex03 SLIM PLUG ＆ CABLE” combines a mobile battery, charger, and cable in one. It features an integrated USB Type-C cable and a foldable AC plug for direct wall charging. Pass-through charging allows simultaneous device charging while recharging the power bank.

The capacity test shows 82.28%, with minimal error from the listed capacity, reducing worries about charging during outings. You can plan your charges with confidence.

At 2.2cm thick and 73.21cm² in area, it’s slim and compact. Easy to store in bags or pockets, suitable for daily use from commuting to travel. It supports fast charging up to 36W, enabling quick smartphone top-ups. Recharging the device is also fast, making it highly practical. Its multifunctionality as a charger makes it ideal for those seeking a versatile device.

Recommended for: Those wanting to reduce carrying chargers, seeking both AC and fast charging capabilities

Advantages

• High capacity ratio
• Slim and lightweight
• Supports fast charging up to 36W
• Includes AC plug for dual use

【8th Place】MagFlow PB773 (UGREEN) ★4.48/5.0

Qi2 compatible, supporting fast wireless charging. Easy switch between wired and wireless

UGREEN’s “MagFlow PB773” supports high-speed wireless charging with Qi2 standard. It has an integrated Type-C cable, allowing switching between wired and wireless charging. The maximum measured output is 36W, enabling quick smartphone charging. It also supports fast recharging at up to 30W.

Wireless charging with Qi2 supports 25W output, matching wired speed, ideal for avoiding cables outdoors. The capacity ratio is 73.66%, providing enough charge for multiple smartphone recharges per session.

At 2.1cm thick and 77.87cm² in area, it’s compact and easy to carry. Fits well in bags or pockets, balancing portability and performance. A well-rounded choice for those seeking fast wireless charging with easy portability.

Recommended for: Users wanting fast wireless charging, portability without compromise

Advantages

• Max 36W wired charging
• Qi2 fast wireless charging support
• Sufficient actual capacity ratio
• Compact and portable

【9th Place】Power Bank 10000mAh Fusion Built-In USB-C Cable (Anker) ★4.47/5.0

3-in-1 high-functionality. Integrated cable for smart portability

Anker’s “Power Bank (10000mAh, Fusion, Built-In USB-C Cable)” combines a built-in USB Type-C cable and an AC adapter, serving three functions. Simply plug into an outlet to recharge the device. Its efficient design minimizes carried items.

The actual capacity is 83.73% of the stated, closely matching the nominal. It reliably provides the expected number of charges, suitable for long trips and travel.

Supports up to 35W fast charging for smartphones. Recharging the device is quick, reducing waiting time. Despite being 3.1cm thick, its area of 55.34cm² makes it easy to store in bags or pouches. It’s a versatile choice for users who want a 3-in-1 device.

Recommended for: Those wanting to minimize carrying multiple items, seeking multi-functionality

Advantages

• High and accurate capacity ratio
• Fast charging for smartphones
• Quick recharging of the device
• Integrated cable and charger

【10th Place】Prime Power Bank 9600mAh 65W Fusion (Anker) ★4.46/5.0

Charger and power bank combined. A powerful option for professional users

Anker’s “Prime Power Bank (9600mAh, 65W, Fusion)” merges a USB charger and a portable battery. It features a foldable plug for direct wall charging.

The capacity test shows 81.31%, with minimal deviation from the listed value, allowing accurate planning. It greatly reduces anxiety about battery depletion during outings.

At 4.3cm thick and 49.81cm² in area, it’s somewhat bulky but still manageable. It can be stored in bags or pouches easily. Supports up to 67W output, enabling quick charging of smartphones and tablets. Fast recharging of the device itself is also possible. It’s a high-performance choice for those who need both a charger and a power bank in one.

Recommended for: Business travelers, users requiring high output

Advantages

• High actual capacity ratio
• Compact enough for bags
• Supports up to 67W fast charging
• Fast recharging of the device