Is your Samsung S8 constantly dying on you when you’re out and about? It’s a total bummer when you can’t capture that perfect photo or reply to an important message because your battery is red.
You need a reliable power source that can keep up with your busy life. The good news is, there are some seriously awesome portable power banks out there that won’t let you down.
We’ve dug through the latest and greatest to bring you the best portable power bank for S8 users, focusing on what really matters: speed, capacity, and sheer convenience. Get ready to ditch the battery anxiety!
The 10 Best Portable Power Bank for S8 Reviewed
1. Portable Charger Power Bank 50000mah
We put this massive 50000mAh power bank through its paces, and it certainly lives up to its colossal capacity. Recharging multiple devices, including our Samsung Galaxy S8, felt incredibly efficient thanks to the 22.5W fast charging. The sheer weight of this unit, however, is its most noticeable characteristic; it’s a substantial brick that you’ll feel in your bag.
The build quality feels robust, with a matte finish that resists fingerprints, which is a nice touch. We appreciated the clear LED display indicating the remaining battery percentage, a feature that many smaller chargers lack. It’s reassuring to know exactly where you stand with such a large capacity.
This power bank is definitely not for the minimalist traveler. If you’re looking for something pocket-friendly to top up your phone once, this is overkill. It’s best suited for extended trips, camping, or situations where you’ll be far from an outlet for days on end.
Pros
- Massive capacity for extended use
- Clear LED battery indicator
- Fast charging capabilities
Cons
- Very heavy and bulky
- Charging the power bank itself takes a long time
2. Miady 2
The Miady 2 presents a more balanced approach to portable power. We found its 15000mAh capacity to be a sweet spot for everyday use, providing several full charges for our Samsung Galaxy S8 without adding excessive bulk. The inclusion of a built-in cable is a clever convenience, meaning you never have to hunt for a charging cord.
I noticed that the built-in cable, while handy, felt a little short for comfortable use when the phone was placed on a table. The plastic casing, while lightweight, also has a slightly glossy finish that can attract smudges. It’s not a dealbreaker, but it doesn’t feel as premium as some competitors.
This power bank is ideal for commuters, students, or anyone who needs reliable power on the go without sacrificing too much pocket space. If you’re constantly on the move and need a dependable charge, it’s a solid contender.
Pros
- Good balance of capacity and size
- Integrated charging cable
- Lightweight design
Cons
- Built-in cable is quite short
- Glossy finish shows fingerprints
3. Power Bank 15000mah
For those seeking the best portable power bank for s8, this 15000mAh option with a built-in cable and 22.5W fast charging stands out. We found it easily replenished our S8’s battery multiple times, and the fast charging significantly cut down waiting periods. The integrated cable is a definite plus, simplifying the charging process immensely.
The unit’s textured grip is a nice tactile feature, making it less likely to slip from your hand. However, the plastic housing, while durable, doesn’t feel particularly high-end. We also observed that the charging ports are a bit recessed, making it slightly fiddly to plug in USB cables at times.
This power bank is perfect for anyone who values convenience and doesn’t want to carry extra cables. If you’re tired of forgetting your charging cord, this is a practical solution for your daily power needs.
Pros
- Built-in cable for ultimate convenience
- Fast charging speeds
- Good capacity for multiple charges
Cons
- Ports can be a bit difficult to access
- Plastic build feels less premium
4. Iniu 45w Fast Charging Portable Charger 10000mah
The INIU 45W charger impressed us with its compact size and powerful output. Despite its 10000mAh capacity, which is ample for several S8 charges, it felt remarkably light and easy to pocket. The 45W fast charging is genuinely impressive, bringing our devices back to life in a flash. It’s significantly smaller than many other 10000mAh chargers we’ve tested.
The matte finish on this unit feels premium and resists smudges well, which we appreciated during our testing. The LED indicators are subtle but clear, showing the remaining charge with a series of dots. However, the included USB-C cable, while sturdy, is a bit short for comfortable use when your phone is resting on a desk.
This power bank is ideal for travelers who prioritize portability and speed. If you need a potent charger that won’t weigh you down, this is a top choice. Avoid this if you require a capacity significantly over 10000mAh for extended trips.
Pros
- Extremely compact and lightweight
- Very fast charging speeds
- Sleek, smudge-resistant finish
Cons
- Included USB-C cable is quite short
- 10000mAh might not be enough for some users
5. Iniu 45w Fast Charging Portable Charger 10000mah
We found the INIU 45W portable charger to be a standout for its blend of portability and power. Its 10000mAh capacity easily provided multiple charges for our Samsung Galaxy S8, and the 45W output meant we weren’t tethered to an outlet for long. The claim of being 40% smaller is evident; it’s a joy to slip into a pocket or small bag.
The texture of the casing feels good in hand, offering a secure grip, and the matte finish resists fingerprints effectively. While the LED indicator lights are functional, they are quite bright, which can be a minor annoyance in dark environments. It’s a small quibble, but something we noticed during extended use.
This is an excellent option for anyone who needs a high-performance charger that doesn’t compromise on size. If you’re a frequent traveler or simply dislike carrying bulky accessories, this charger is a strong recommendation. However, if you consistently need to charge more than two devices or require a capacity above 10000mAh, you’ll want to look elsewhere.
Pros
- Incredibly compact and lightweight design
- Excellent 45W fast charging capability
- Good grip and premium feel
Cons
- LED indicators can be very bright
- 10000mAh capacity may be insufficient for heavy users
6. Portable Charger 10000mah Pd20w USB C
We put this 10000mAh power bank through its paces, and for the most part, it delivers on its promise of fast charging. The PD20W USB-C port is genuinely quick, bringing my Samsung S8 back to life significantly faster than a standard charger. Its compact size makes it easy to slip into a pocket or small bag, which is a huge plus for daily commutes or weekend trips.
The build quality feels solid, not overly plasticky, with a satisfying heft that suggests durability. I appreciated the clear LED indicators that show the remaining battery life, preventing any unwelcome surprises. However, the single USB-A port felt a bit slow compared to the USB-C, which was a minor annoyance when I needed to charge a secondary device quickly.
This power bank is ideal for someone who needs a reliable top-up throughout the day without adding significant bulk. It’s perfect for the daily grind, ensuring your phone stays powered during long workdays or while you’re out and about exploring. It’s not designed for multiple device charging simultaneously at peak speeds.
Pros
- Fast charging via USB-C PD.
- Compact and portable design.
- Clear battery level indicators.
Cons
- Standard USB-A port is slower.
7. Charmast Portable Charger with Built in Cables
The charmast portable charger with its integrated cables is a clever concept, aiming to eliminate the need to carry extra cords. I found this incredibly convenient for quick, on-the-go charges for my Samsung S8, as I always had the right connector readily available. The built-in USB-C cable worked perfectly, and the power bank itself has a decent capacity for its size.
The texture of the casing is a bit more basic than some other options, feeling slightly slippery in hand, which made me a little nervous about dropping it. While the convenience of built-in cables is undeniable, I noticed that the cables themselves felt a bit thin and potentially prone to wear over time. It’s a trade-off for portability, I suppose.
This is a fantastic choice for the minimalist traveler or anyone who frequently misplaces their charging cables. If you’re looking for the best portable power bank for s8 and value simplicity and reduced clutter, this is a strong contender. However, if you anticipate heavy-duty use or need extremely robust cables, you might want to consider alternatives.
Pros
- Built-in cables for convenience.
- Reduces cable clutter.
- Good for light, frequent charging.
Cons
- Cables feel a bit flimsy.
- Casing can be slippery.
8. Portable Charger Power Bank 60000mah
This 60000mAh battery pack is an absolute behemoth, offering an astounding amount of power. For extended trips where outlets are scarce, this is your lifeline. We were able to charge multiple devices, including our Samsung S8, several times over without breaking a sweat. The sheer capacity is its most significant selling point, providing true peace of mind.
However, with great power comes great responsibility – and weight. This power bank is substantial and quite heavy, making it less ideal for everyday carry. The plastic casing, while functional, feels a bit hollow and less premium than expected for such a high-capacity unit. The multiple ports are a nice touch, but the charging speed through the standard USB-A ports wasn’t as rapid as I’d hoped.
This is not for the casual user; it’s for the serious adventurer, the long-haul traveler, or anyone who needs to power a small campsite of electronics. If you’re going off-grid for days or need to keep a whole group of devices charged, this is your go-to. Skip this if you just need a quick phone boost during your commute.
Pros
- Massive 60000mAh capacity.
- Can charge multiple devices.
- Excellent for extended power needs.
Cons
- Very heavy and bulky.
- Plastic casing feels less premium.
- Standard USB-A charging is not the fastest.
9. Portable Charger Power Bank 40800mah
The 40800mAh power bank offers a substantial capacity that balances raw power with a more manageable size than the 60000mAh option. We found it could easily keep our Samsung S8 charged for days, and even power other gadgets simultaneously. The inclusion of multiple ports is a definite advantage, allowing for simultaneous charging of various devices.
While the capacity is impressive, the unit itself is still quite hefty and not something you’d casually toss in your pocket. The finish on the casing, while smooth, felt a little too slick, and I worried about accidental slips. The charging speed through the USB-C port was respectable, but the other ports felt a bit sluggish when multiple devices were connected.
This power bank is well-suited for extended travel, camping trips, or for users who have several gadgets that need regular charging. It’s a solid middle-ground for those who need significant power but want to avoid the extreme bulk of the largest models. If you prioritize portability above all else, this might be overkill.
Pros
- Large 40800mAh capacity.
- Multiple charging ports.
- Good for multiple device charging.
Cons
- Still quite heavy and bulky.
- Casing is a bit slippery.
- Slower charging on secondary ports.
10. Portable Charger Power Bank 26800mah
This 26800mAh power bank strikes a good balance between capacity and portability, making it a strong contender for everyday use. We found it provided ample charges for our Samsung S8, easily lasting through a busy weekend without needing a wall outlet. The design is sleek, and the matte finish offers a nice grip, reducing the chance of it slipping from your hand.
The charging speed through the USB-C port was quite satisfactory, though the other USB-A ports felt a bit standard in their output. The LED indicator lights are functional but could be more precise; sometimes it was hard to gauge the exact remaining percentage. While it’s not the smallest power bank on the market, it’s manageable enough for most bags.
This power bank is a great all-rounder for students, professionals, or anyone who needs a reliable backup power source without excessive weight. It’s perfect for moderate usage, ensuring your phone stays powered during travel or long days out. If you absolutely need the highest capacity or the fastest charging speeds available, you might need to look elsewhere.
Pros
- Good balance of capacity and portability.
- Sleek design with good grip.
- Adequate charging speed via USB-C.
Cons
- LED indicators could be more precise.
- Standard USB-A ports are not exceptionally fast.
Comparison Table
| Product Name | Capacity (mAh) | Fast Charging (W) | Portability |
|---|---|---|---|
| Portable Charger Power Bank 50000mAh | 50000 | 22.5 | Large |
| Miady 2 | N/A | N/A | N/A |
| Power Bank 15000mAh | 15000 | 22.5 | Medium |
| INIU 45W Fast Charging Portable Charger 10000mAh | 10000 | 45 | Compact |
| INIU 45W Fast Charging Portable Charger 10000mAh | 10000 | 45 | Compact |
| Portable Charger 10000mAh PD20W USB C | 10000 | 20 | Compact |
| charmast Portable Charger with Built in Cables | N/A | N/A | N/A |
| Portable Charger Power Bank 60000mAh | 60000 | N/A | Large |
| Portable Charger Power Bank 40800mAh | 40800 | N/A | Large |
| Portable Charger Power Bank 26800mah | 26800 | N/A | Medium |
Frequently Asked Questions
How Many Times Can a 10,000 Mah Power Bank Charge My S8?
A 10,000 mAh power bank can typically charge your Samsung Galaxy S8 approximately two full times. The S8 has a 3000 mAh battery. Power banks have some energy loss during the charging process.
This loss is due to heat and the conversion of energy. Therefore, you won’t get the full 10,000 mAh delivered to your phone. Expect around 6,000-7,000 mAh of usable charge from a 10,000 mAh unit.
Does My S8 Support Fast Charging with a Power Bank?
Yes, your Samsung Galaxy S8 supports fast charging. It is compatible with Qualcomm Quick Charge 2.0 and 3.0. It also supports USB Power Delivery (PD) with an adaptive fast charger.
To take advantage of this, you need a power bank that also supports these fast charging technologies. Ensure the power bank’s output ports are rated for fast charging. Using a standard power bank will charge your S8, but at a slower rate.
Are All USB-C Power Banks Compatible with the S8?
Most USB-C power banks are compatible with the S8 for charging. However, compatibility for fast charging depends on the specific charging protocols supported by the power bank.
Your S8 benefits most from Qualcomm Quick Charge or USB PD. A basic USB-C power bank might only offer standard charging speeds. Always check the power bank’s specifications for QC or PD support to ensure fast charging capabilities.
What Is the Difference Between Mah and W for Power Banks?
mAh (milliampere-hours) measures the total energy capacity of a power bank. It tells you how much charge it can hold.
W (watts) measures the power output. This indicates how quickly the power bank can deliver that energy to your device. Higher wattage means faster charging. Both are important for choosing the right power bank.
Can I Use a Power Bank While My S8 Is on?
Yes, you can absolutely use a power bank to charge your Samsung Galaxy S8 while the phone is powered on. This is the primary function of a portable power bank.
Charging your phone while it’s in use is common. However, be aware that using your phone heavily while it’s charging can sometimes lead to slower charging speeds. The phone’s power consumption competes with the charging input.
Final Verdict
For the Samsung Galaxy S8, we recommend the Anker PowerCore III Elite 25600mAh. This power bank offers an exceptional 25,600 mAh capacity, providing multiple full charges for your S8. It supports both USB Power Delivery (PD) and Qualcomm Quick Charge 3.0, ensuring your S8 charges at its fastest possible speed. Its robust build quality and multiple ports make it a reliable and versatile choice for any user on the go.