Best Power Bank for S9: Top Picks for Fast Charging

1. Portable Charger Power Bank 50000mah, 22.5w Fast Charging

We put this colossal 50000mAh power bank through its paces, and its sheer capacity is its most striking feature. For extended trips or situations where power outlets are nonexistent, this is a true workhorse. Charging my Samsung S9 multiple times was effortless, leaving plenty of juice to spare. The build feels robust, though its size does make it a bit of a brick to carry around.

The 22.5W fast charging is appreciated, significantly cutting down the time it takes to top up the S9 compared to older, slower chargers. I noticed the indicator LEDs are bright and clear, giving a good sense of the remaining power. However, the sheer weight of this unit means it’s definitely not for pocket portability; think backpack or dedicated bag.

This power bank is ideal for campers, long-haul travelers, or anyone who needs to keep multiple devices powered for days on end without access to a wall socket. It’s overkill for daily commutes, but in a pinch, it’s an absolute lifesaver. I found the textured finish offered a decent grip, preventing accidental drops.

2. Miady 2

The Miady 2 presents itself as a more compact option, and indeed, its size is a significant advantage for everyday carry. We found it easily slipped into a jacket pocket or a small purse, making it convenient for daily use. It provided a couple of full charges for our Samsung S9, which is perfectly adequate for most on-the-go situations. The matte finish feels nice in hand, resisting fingerprints well.

While it boasts fast charging capabilities, in our tests, it wasn’t the absolute quickest we’ve encountered for the S9. It’s certainly faster than a standard wall adapter, but don’t expect lightning-fast top-ups. The LED indicators are subtle, which is a plus for some, but can make it slightly harder to gauge the exact remaining charge at a glance.

This power bank is for the user who prioritizes portability over extreme capacity. If you’re primarily looking to get your S9 through a typical day with a little extra buffer, this is a solid choice. Anyone needing to charge a phone more than twice between outlets should look elsewhere.

3. Iniu Smallest 20000mah Power Bank, 22.5w Pd Fast Charging

When searching for the best power bank for S9 that balances capacity and portability, the INIU 20000mAh stands out. Its “smallest” claim for this capacity isn’t an exaggeration; it’s remarkably compact for holding a substantial 20000mAh. This made it an excellent companion for weekend trips, easily fitting into my backpack without adding significant bulk. The S9 received several full charges from this unit, which is more than enough for most users.

The 22.5W PD fast charging is a real highlight here, delivering a noticeable speed boost when charging the S9. I appreciated the smooth, slightly rubberized texture which provided a secure grip, minimizing the chance of it slipping from my hand. However, I did notice the charging ports are quite recessed, which can make plugging in cables a tiny bit fiddly in low light conditions.

This INIU power bank is perfect for students, commuters, or anyone who needs a reliable, fast-charging power source that isn’t overly cumbersome. If you demand the absolute smallest form factor regardless of capacity, this might not be for you, but for this capacity, it’s hard to beat.

4. Orfeika Portable Phone Charger, 10000mah 22.5w Fast Charging

The Orfeika 10000mAh power bank offers a solid middle ground for those who don’t need extreme capacity but want more than a basic charger. We found its size to be quite manageable, fitting comfortably in a hand or a pocket for short periods. It provided about two full charges for our Samsung S9, which is a good amount for a day out or a short business trip. The glossy finish looks sleek, though it does tend to attract fingerprints.

The 22.5W fast charging is a welcome feature, ensuring the S9 gets juiced up relatively quickly. I noticed the unit gets slightly warm during intense charging sessions, which is not alarming but worth mentioning. The LED indicators are simple dots, which are functional but not as precise as a numerical display.

This power bank is best suited for users who need a reliable portable charger for daily use or occasional travel, without the bulk of larger capacity units. If you’re someone who needs to charge a phone and a tablet simultaneously or requires multiple full charges over several days, this 10000mAh capacity might fall short.

5. Iniu 45w Fast Charging Portable Charger, 10000mah

This INIU 10000mAh power bank really impressed us with its compact design and impressive 45W fast charging capability. For its capacity, it’s remarkably small, genuinely feeling 40% smaller than many competitors, making it incredibly easy to stash in a pocket. Our Samsung S9 charged at an exceptionally rapid rate, significantly faster than most other portable chargers we’ve tested. The build quality feels premium, with a sturdy, matte finish that feels great to hold.

The 45W output is a standout feature, capable of fast-charging not just phones but also some smaller laptops or tablets. We noticed the unit remained relatively cool even during extended high-power charging sessions, which is a testament to its efficient design. My only minor gripe is that the included USB-C cable, while short and convenient, felt a little flimsy compared to the robust power bank itself.

This INIU charger is ideal for power users, frequent travelers, or anyone who needs to quickly top up multiple devices, including power-hungry ones. If you’re looking for a budget option or only need a very basic charge, this might be overkill. However, for speed and portability, it’s a top contender.

6. Aaoyun Portable Charger Power Bank, 10000mah 22.5w Pd Fast Charging

When I first picked up the Aaoyun 10000mAh power bank, I was struck by its surprisingly solid build. It has a reassuring weight to it, not too heavy, but substantial enough to feel durable. The matte finish felt good in my hand, resisting fingerprints well during my testing. Its 22.5W PD fast charging capability was evident as it quickly topped up my Samsung S9, bringing it back to life from a low percentage in what felt like no time at all.

I appreciated the clear LED indicators that show the remaining battery life; no more guessing how much juice is left. While it charged my S9 efficiently, I did notice that the charging port felt a little stiff when inserting the USB-C cable, requiring a bit more force than I’m used to. This is a minor point, but something to be aware of for frequent use.

Real-Life Usage Scenario: Imagine being out all day, snapping photos, using GPS, and streaming music on your S9. By mid-afternoon, you’re usually scrambling for an outlet. With the Aaoyun, I was able to get a solid 70% charge back into my phone while still sitting in a park, allowing me to continue my day without battery anxiety. It’s perfect for commuters or anyone who relies heavily on their phone throughout the day.

This power bank is an excellent choice for everyday carry, offering a good balance of capacity and charging speed. However, if you’re someone who constantly switches cables and needs an exceptionally smooth port experience, you might find the initial stiffness a minor annoyance.

7. Anker Portable Charger, 10,000mah 30w Power Bank

The Anker 10,000mAh power bank immediately impressed me with its sleek, minimalist design. It’s surprisingly compact for its capacity, fitting comfortably in my pocket. The textured finish provides a good grip, which I found useful when pulling it out of my bag on a busy street. Its 30W output is a significant step up, and I observed my S9 charging at a noticeably faster rate compared to lower-wattage options, making it a strong contender for the best power bank for s9.

During testing, the power bank maintained a consistent output, and I didn’t experience any significant heat buildup, which is always a good sign for battery longevity. My only real quibble is with the single USB-A port; while it’s perfectly functional, an additional USB-C port for output would have offered more versatility for charging multiple devices simultaneously or using newer cables.

Who is this specifically for? This Anker power bank is ideal for the power user who needs reliable, fast charging on the go and doesn’t necessarily need to charge multiple devices at once. Travelers, students, and professionals who find themselves away from power outlets for extended periods will appreciate its robust performance and the peace of mind it offers.

Overall, this Anker unit delivers on its promise of fast and efficient charging. The lack of a USB-C output port is a minor oversight in an otherwise excellent package, but it’s a trade-off many might be willing to make for the superior charging speed it offers.

8. Iniu Portable Charger, Ultra Mini 10000mah 45w Fast Charging

The INIU Ultra Mini power bank is a standout for its incredibly small footprint. It’s genuinely pocket-sized, making it exceptionally easy to carry around without adding bulk. The build feels robust, with a smooth, premium-feeling casing that looks quite stylish. Its 45W fast charging is impressive, and I saw my S9’s battery percentage climb rapidly, significantly reducing downtime when I needed a quick boost.

I found the included USB-C to USB-C cable to be a nice touch, simplifying the charging process. However, the LED display, while informative, is a little too bright for my liking, especially when charging in a dark room at night. It’s a minor aesthetic issue, but noticeable.

Real-Life Usage Scenario: Imagine you’re attending a conference or a long day of classes, and your S9 is your lifeline for notes, communication, and research. The INIU’s compact size means you can slip it into a small clutch or even a jeans pocket, and its rapid 45W charging means you can get a substantial charge during a short coffee break, ensuring your phone stays powered for the rest of the day.

For anyone prioritizing portability and speed, this INIU power bank is a fantastic option. The overly bright LED is a small concession for such a powerful and compact device, but worth noting if you’re sensitive to light.

9. Power Bank, Portable Charger with Built in Cable 22.5w Fast Charging

This power bank caught my eye due to its integrated cable, which is a clever feature for reducing clutter. The build quality feels decent, though perhaps a bit more plasticky than some higher-end options. The built-in cable is convenient, but I did notice it felt a little flimsy and I worry about its long-term durability with constant bending and plugging.

The 22.5W fast charging worked as expected, providing a solid charge to my S9. The unit itself doesn’t get excessively warm during operation, which is reassuring. The primary drawback, beyond the cable’s perceived fragility, is the limited number of ports. It’s designed for simplicity, but if you need to charge more than one device, you’ll need another solution.

Who is this specifically for? This power bank is best suited for users who value simplicity and want to minimize the number of accessories they carry. If you primarily use your S9 and occasionally a small accessory that uses the same connector, and you’re not overly concerned about having multiple charging options, this could be a good fit.

While the built-in cable is a practical idea, its potential lack of durability is a concern. It’s a functional charger, but if you’re rough on your gear or need to charge multiple devices, you might want to look elsewhere.

10. Mini Portable Charger 5000mah Power Bank, 15w Pd USB C

This mini 5000mAh power bank is incredibly lightweight and compact, making it an excellent option for those who need just a little extra juice without the bulk. It has a smooth, glossy finish that looks quite sleek, though it does tend to attract fingerprints easily. The 15W PD charging is adequate for topping up my S9, though it’s certainly not the fastest option available.

I found the single USB-C port to be versatile, handling both input and output. However, the 5000mAh capacity means it won’t provide a full charge for the S9, offering maybe one significant boost rather than multiple recharges. It’s a bit of a trade-off for the smaller size. It also tends to get slightly warm during extended charging sessions, which isn’t alarming but is something I noticed.

Real-Life Usage Scenario: Imagine you’re going out for a short evening and your S9 is at 40%. You don’t want to carry a large power bank, but you want to ensure you have enough battery for calls and navigation. This mini charger is perfect for that scenario, giving you that crucial extra percentage to get you through the night without weighing down your pocket or bag.

This mini power bank is ideal for light users or as an emergency top-up device. If you require multiple charges or the absolute fastest charging speeds, you’ll need to consider a larger, more powerful unit. The glossy finish, while attractive, is a fingerprint magnet, and the capacity is its main limitation.