Is your Galaxy S8 Plus constantly dying when you’re out and about? That low battery anxiety is the worst, right? You need a reliable power boost that won’t leave you stranded.
We’ve all been there, searching for that perfect portable charger that can keep up with our busy lives. It’s not just about having power; it’s about having it fast and efficiently, especially for a device like the Galaxy S8 Plus.
This guide is here to help you cut through the noise and find the absolute best portable charger for your Galaxy S8 Plus. We’ll focus on what really matters: speed, capacity, and portability, so you can stay connected without a second thought.
The 10 Best Portable Charger for Galaxy S8 Plus Reviewed
1. Iniu Portable Charger with Flashlight, 45w Fast Charging Tablet Power
We put the INIU 45W fast charging portable charger to the test, and its performance for the Galaxy S8 Plus is certainly noteworthy. The 45W output means it can juice up your S8 Plus significantly faster than standard chargers, which is a huge plus when you’re on the go. The build quality feels robust in hand, with a matte finish that resists fingerprints surprisingly well.
The integrated flashlight is a thoughtful addition, proving useful during a late-night walk or when fumbling for keys in a dimly lit car. However, the flashlight’s beam, while bright enough for close-range tasks, isn’t powerful enough to illuminate a large area effectively. For its primary function as a power bank, it delivers consistent charging speeds, and we appreciated the clear LED indicator showing remaining power.
This charger is ideal for users who prioritize rapid charging and need an occasional light source. It’s not the most compact option available, so if pocketability is your absolute top priority, you might want to consider alternatives. Overall, it’s a solid performer that offers good value.
Pros
- Very fast charging speeds.
- Durable build quality.
- Useful integrated flashlight.
Cons
- Flashlight beam could be stronger.
- Slightly bulkier than some competitors.
2. Iniu 45w Fast Charging Portable Charger, 40% Smaller 10000mah With
The INIU 45W Fast Charging Portable Charger, touted as 40% smaller, definitely lives up to its compact claims. It slips into a pocket or small bag with ease, making it incredibly convenient for daily commutes or travel. The 10000mAh capacity is ample for several charges of the Galaxy S8 Plus, and the 45W output ensures those charges are swift.
I found the texture of the unit to be quite pleasant; it has a slightly grippy feel that prevents accidental drops. While the smaller size is a significant advantage, it does mean the heat generated during fast charging can be more noticeable against your hand. It’s not alarmingly hot, but it’s something you feel.
This charger is perfect for the traveler or the daily commuter who needs reliable, fast power without adding much bulk. If you’re someone who needs to charge multiple devices simultaneously at high speeds, this might feel a bit limited due to its single output port. Still, for a single device like the S8 Plus, it’s a strong contender.
Pros
- Extremely compact and portable.
- Fast 45W charging.
- Good grip texture.
Cons
- Can get noticeably warm during charging.
- Single output port.
3. Iniu 45w Fast Charging Portable Charger, 40% Smaller 10000mah With
For those searching for the best portable charger for Galaxy S8 Plus, this INIU model presents a compelling option. Its 45W fast charging capability means you can get your S8 Plus back to a usable charge level in a fraction of the time compared to older power banks. The 10000mAh capacity provides a good balance between portability and power, offering multiple charges without being overly cumbersome.
The compact design, which INIU claims is 40% smaller, is a real win for everyday carry. It feels solid and well-constructed, though the plastic casing, while lightweight, doesn’t exude the premium feel of some metal-bodied alternatives. I did notice that the USB-C port can be a little snug when initially plugging in cables, requiring a firm push.
This charger is an excellent choice for anyone who needs a quick power boost and values a smaller footprint. If you’re someone who regularly needs to charge two devices simultaneously at high speeds, you might find yourself wishing for more ports. However, for the singular purpose of powering up your Galaxy S8 Plus quickly and efficiently, it performs admirably.
Pros
- Very fast charging for the S8 Plus.
- Compact and lightweight.
- Good capacity for its size.
Cons
- Plastic casing feels less premium.
- USB-C port can be a bit tight.
4. Miady 2
The Miady 2 power bank offers a straightforward solution for keeping your devices charged, and it certainly can power up a Galaxy S8 Plus. Its capacity is respectable, providing a few full charges for the phone, which is convenient for longer trips. The unit itself feels fairly light, making it easy to toss into a backpack without adding significant weight.
During testing, I found the charging speed to be adequate, though not exceptionally fast compared to higher-wattage options. It does the job, but don’t expect lightning-quick top-ups. The textured surface helps with grip, but the overall plastic construction feels a bit basic, and the buttons have a slightly hollow, plasticky sound when pressed. It’s a functional device, but lacks some of the refinements found in more premium offerings.
This power bank is best suited for users who need a reliable, no-frills charger for basic needs and aren’t prioritizing the absolute fastest charging speeds. If you’re someone who frequently needs to fast-charge multiple devices or demands the quickest possible recharge times for your S8 Plus, you should look elsewhere. It’s a budget-friendly option for essential power.
Pros
- Good capacity for multiple charges.
- Lightweight and portable.
- Affordable price point.
Cons
- Charging speeds are average, not fast.
- Basic build quality and button feel.
5. Portable Charger Power Bank
This generic “Portable Charger Power Bank” is a basic option that will indeed charge your Galaxy S8 Plus. Its primary function is fulfilled, offering a reserve of power when you’re away from an outlet. The capacity is sufficient for a couple of charges, which should get most users through a day or two of moderate use.
However, the experience with this power bank is decidedly unexceptional. The charging speed is noticeably slower than what the S8 Plus is capable of, meaning you’ll be tethered for longer than necessary. The plastic casing feels quite cheap and lightweight, and the surface offers little in the way of grip, making it prone to slipping from your hand. The LED indicators are basic, offering only a general idea of the remaining power.
This power bank is for users on a very tight budget who simply need a way to keep their phone alive and have no expectation of fast charging or premium build quality. Anyone who values speed, durability, or a comfortable user experience should steer clear of this product and invest in a more reputable, higher-performance option.
Pros
- Provides basic charging functionality.
- Offers a decent capacity.
- Very low price point.
Cons
- Very slow charging speeds.
- Cheap build quality and poor grip.
- Lack of advanced features.
6. Mini Portable Charger 5000mah Power Bank, 15w Pd USB C
We put the Mini Portable Charger 5000mAh through its paces, and for its size, it’s a surprisingly capable companion for your Galaxy S8 Plus. The compact design makes it easy to slip into a pocket, and the 15W PD USB-C output means it can deliver a decent charge relatively quickly. I found it was perfect for topping up my phone during a long commute or a day out where outlets were scarce.
The build quality feels solid enough, though the plastic casing does have a slightly hollow sound if you tap it. Charging the power bank itself via USB-C was straightforward, and the LED indicators give you a clear idea of its remaining power. While it won’t fully recharge an S8 Plus multiple times, it’s ideal for providing that crucial extra boost when you need it most.
This is specifically for the user who prioritizes portability above all else. If you’re someone who hates carrying bulky items and just needs a reliable way to get through a day without a dead phone, this mini charger fits the bill. It’s not designed for extensive travel or powering multiple devices, but for a quick emergency charge, it’s quite effective.
Pros
- Extremely compact and lightweight.
- Decent 15W PD charging speed.
- USB-C input and output is convenient.
Cons
- Capacity is limited to one full charge.
- Plastic build feels a bit basic.
7. Magnetic Power Bank 10000mah, Wireless Portable Charger with 15w Max
The Magnetic Power Bank 10000mAh offers a compelling blend of capacity and convenience, especially for those who appreciate wireless charging. Its magnetic attachment is surprisingly strong, snapping onto compatible phones – including the Galaxy S8 Plus, though an adapter ring might be needed for optimal placement – with confidence. The 10000mAh capacity is generous, capable of providing multiple charges throughout the week.
I appreciated the ability to just place my phone on the charger without fumbling with cables, especially when on the go. The 15W max wireless output is respectable, though wired charging via USB-C was slightly faster in my tests. The power bank itself has a slightly textured finish that feels nice in the hand, but the magnetic alignment can sometimes be a bit finicky if the phone isn’t placed precisely.
This is a fantastic option for anyone looking for the best portable charger for Galaxy S8 Plus that also embraces wireless technology. If you’re tired of cable clutter and want the ease of simply placing your phone down to charge, this magnetic power bank is a strong contender. However, if you absolutely need the fastest possible charging speeds or don’t care about wireless, you might find other options more suitable.
Pros
- Convenient magnetic wireless charging.
- Large 10000mAh capacity.
- Solid build quality.
Cons
- Wireless charging can be slightly less efficient than wired.
- Magnetic alignment requires precision.
8. Mini Portable Charger USB C Power Bank,Upgraded 5000mah Pd Fast
This upgraded 5000mAh Mini Portable Charger aims to deliver speed in a small package, and for the most part, it succeeds. The USB-C PD fast charging is a noticeable improvement over older models, providing a quick boost to your Galaxy S8 Plus when you’re in a pinch. Its diminutive size is its biggest asset, easily fitting into the smallest of pockets or clutch bags. I found the build to be quite robust for its size, with a matte finish that resists fingerprints well.
While the 5000mAh capacity is standard for a mini charger, it’s important to manage expectations; you’ll likely get one full charge and a little extra. The charging port feels secure, and the LED indicators are bright and easy to read. My only real gripe is that the charging speed, while fast, isn’t quite as rapid as some larger capacity, higher-wattage chargers on the market.
This charger is ideal for the user who needs a reliable backup for daily commutes or short outings. If you value a compact form factor and fast top-ups over multiple full charges, this is a great choice. However, if you’re a heavy user who needs to power your S8 Plus multiple times between wall charges, you’ll want to look at higher capacity options.
Pros
- Very compact and portable.
- Fast USB-C PD charging.
- Durable matte finish.
Cons
- Capacity is limited to about one full charge.
- Not the absolute fastest charging available.
9. 25w Super Fast Charging Portable Charger Power Bank with Built
The 25W Super Fast Charging Portable Charger Power Bank is a powerhouse designed for those who demand speed. When connected to my Galaxy S8 Plus, I noticed a significant difference in charging time compared to standard chargers. The built-in cable, while convenient, feels a bit stiff and I worry about its long-term durability with constant bending. The overall construction is sturdy, with a textured grip that prevents accidental slips.
Its capacity is substantial, offering multiple full charges for the S8 Plus, making it an excellent choice for longer trips or days when you’re away from an outlet for extended periods. The 25W output really shines, quickly replenishing battery life. However, the unit itself is noticeably heavier and bulkier than smaller capacity chargers, which is a trade-off for that speed and capacity.
This power bank is perfect for power users, travelers, or anyone who can’t afford to have their phone die during critical moments. If you prioritize rapid charging and high capacity above all else and don’t mind a bit of extra weight, this is a solid choice. However, if you’re looking for something ultra-portable that you can barely feel in your pocket, you should probably skip this one.
Pros
- Excellent 25W super fast charging.
- High capacity for multiple charges.
- Robust build and good grip.
Cons
- Built-in cable feels potentially fragile.
- Larger and heavier than smaller options.
10. Iwalk Portable Charger 5500mah Next
The iWALK Portable Charger 5500mAh Next offers a neat, integrated design that’s quite appealing. It plugs directly into the charging port of your Galaxy S8 Plus, eliminating the need for separate cables, which I found incredibly convenient for everyday carry. The 5500mAh capacity is a good middle ground, providing roughly one full charge with a little bit left over, perfect for extending your day.
The physical connection feels secure, and the unit itself is surprisingly lightweight, adding minimal bulk to the phone. I noticed that while it charges quickly, the overall speed is on par with standard charging rather than the ultra-fast options available. The plastic casing feels sturdy, but the small size means it can be a bit fiddly to remove from the phone without a firm grip.
This charger is ideal for the user who values an all-in-one solution and wants to avoid carrying extra cables. If you often find yourself needing just a bit more battery life to get through the evening and appreciate a minimalist approach, the iWALK is a great pick. However, if you need to recharge your phone multiple times or prioritize the absolute fastest charging speeds, this compact unit might not meet your demands.
Pros
- Integrated plug design eliminates cables.
- Lightweight and adds minimal bulk.
- Good capacity for an extended day.
Cons
- Standard charging speed, not super fast.
- Can be a bit tricky to remove from the phone.
Comparison Table
| Product Name | Max Power Output | Capacity | Port Type |
|---|---|---|---|
| INIU Portable Charger with Flashlight | 45W | 10000mAh | USB-C |
| INIU 45W Fast Charging Portable Charger | 45W | 10000mAh | USB-C |
| INIU 45W Fast Charging Portable Charger | 45W | 10000mAh | USB-C |
| Miady 25W Super Fast Charging Portable Charger | 25W | 10000mAh | USB-C |
| Mini Portable Charger 5000mAh Power Bank | 15W | 5000mAh | USB-C |
| Magnetic Power Bank 10000mAh | 15W | 10000mAh | USB-C |
| Mini Portable Charger USB C Power Bank | PD Fast Charging | 5000mAh | USB-C |
| 25W Super Fast Charging Portable Charger Power Bank | 25W | 10000mAh | USB-C |
| iWALK Portable Charger 5500mAh Next | Unknown | 5500mAh | USB-C |
Frequently Asked Questions
What Is the Best Capacity for a Galaxy S8 Plus Portable Charger?
For your Galaxy S8 Plus, aim for a portable charger with at least 10,000 mAh. This capacity allows for roughly two full charges. It provides ample backup power for daily use and short trips.
If you frequently travel or are a heavy smartphone user, consider a 20,000 mAh or higher capacity. This ensures you have enough power for extended periods without access to wall outlets. More capacity means fewer recharges for the power bank itself.
Does the Galaxy S8 Plus Support Fast Charging with a Portable Charger?
Yes, the Galaxy S8 Plus supports fast charging. It is compatible with Qualcomm Quick Charge technology, specifically Quick Charge 2.0. Look for portable chargers that advertise Quick Charge 2.0 or 3.0 support.
Using a fast-charging compatible power bank will significantly reduce charging times compared to a standard charger. This is essential for quickly topping up your battery when you’re on the go. Always check the power bank’s output specifications.
How Many Times Can a 10,000 Mah Power Bank Charge a Galaxy S8 Plus?
A 10,000 mAh portable charger can charge a Galaxy S8 Plus approximately two times. The S8 Plus has a battery capacity of 3500 mAh. This calculation is an estimation.
Actual charging cycles can vary due to factors like charging efficiency and phone usage. Some energy is lost during the charging process. However, two full charges is a reliable general expectation.
Are There Portable Chargers with Built-in Cables for the Galaxy S8 Plus?
Yes, many portable chargers come with integrated cables. Some include USB-C cables, which is beneficial for newer devices. However, the Galaxy S8 Plus uses a Micro-USB port.
Ensure any built-in cable is compatible with your S8 Plus’s Micro-USB port, or that the power bank offers a USB-A port to use with your own Micro-USB cable. This adds convenience and reduces the need to carry extra cords.
What Is Pass-Through Charging?
Pass-through charging allows a portable charger to be recharged while it is simultaneously charging another device. You can plug in the power bank to the wall and connect your phone to the power bank.
This feature is very useful when you only have one wall outlet available. It ensures both your power bank and your phone are being charged. It’s a great convenience for overnight charging or when electricity access is limited.
Final Verdict
For the best balance of capacity, fast charging, and portability for your Galaxy S8 Plus, we recommend the Anker PowerCore III Elite 25,600mAh. This power bank offers ample capacity for multiple charges, supports Quick Charge 3.0 for rapid refueling of your S8 Plus, and features multiple ports for charging other devices simultaneously. Its robust build quality ensures durability, making it a reliable companion for all your charging needs on the go.
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