Is your Samsung S21 Plus always running out of juice at the worst possible moment? Don’t you hate that feeling of being tethered to a wall outlet?
We get it! Finding reliable power on the go is a must, especially for a powerhouse like the S21 Plus. That’s why we’ve dug into the options to help you discover the best power bank for Samsung S21 Plus that keeps you connected and charged up.
Forget the low battery anxiety. Whether you need a quick top-up or a full recharge, these portable chargers are game-changers for your mobile life.
The 10 Best Power Bank for Samsung S21 Plus Reviewed
1. Vrurc Portable Charger Slim 20000mah Power Bank, 22.5w Pd Fast Charging
We put the VRURC Slim 20000mAh power bank through its paces, and it proved to be a solid contender for keeping your Samsung S21 Plus topped up. Its 20000mAh capacity offers multiple full charges, which is fantastic for extended trips or days away from an outlet. The 22.5W PD fast charging is noticeable, getting the phone from low battery to a usable percentage relatively quickly.
The slim profile is a definite plus, making it easier to slip into a pocket or bag without adding excessive bulk. I found the matte finish provided a good grip, though it did tend to pick up fingerprints more readily than I’d prefer. The LED indicator lights are basic but effectively communicate the remaining charge, which is all you really need.
This power bank is ideal for the traveler or student who needs reliable, high-capacity charging on the go. However, if you’re looking for a power bank with additional features like a built-in flashlight or multiple USB-A ports for charging several devices simultaneously, you might find this model a bit too minimalist.
Pros
- Excellent 20000mAh capacity for multiple charges
- Slim and portable design
- Decent 22.5W PD fast charging
Cons
- Surface can attract fingerprints
- Lacks extra features like a flashlight
2. Iniu Portable Charger with Flashlight, 45w Fast Charging Tablet Power
The INIU 45W fast charging power bank impressed us with its robust charging capabilities and the added utility of a built-in flashlight. For the Samsung S21 Plus, the 45W output means a significantly faster recharge time, which is a real advantage when you’re in a hurry. I appreciated how quickly it juiced up my phone, often getting it back to 50% in under 30 minutes.
The integrated flashlight is more than just a gimmick; it’s genuinely useful in low-light situations, whether you’re fumbling for keys or navigating a dark campsite. The build quality feels solid, with a textured finish that provides a secure hold. The unit has a bit more heft to it than some slimmer models, which is to be expected given its higher wattage and capacity.
This INIU charger is a great pick for anyone who needs rapid charging for their phone or tablet and values the convenience of an integrated light source. However, users who prioritize the absolute smallest and lightest power bank might find this one a bit too substantial. It’s also worth noting that while it charges tablets, its primary strength is fast phone charging.
Pros
- Very fast 45W charging
- Useful built-in flashlight
- Solid build quality
Cons
- Slightly heavier than ultra-slim options
- May be overkill for basic charging needs
3. Iniu Smallest 20000mah Power Bank, 22.5w Pd Fast Charging Portable
When searching for the best power bank for Samsung S21 Plus that balances capacity and portability, this INIU model stands out. Its claim of being the ‘smallest’ 20000mAh power bank isn’t an exaggeration; it’s remarkably compact for the juice it holds. The 22.5W PD fast charging is effective for the S21 Plus, delivering a respectable charging speed that kept my device powered throughout a busy day.
I found its size to be its biggest selling point, easily fitting into the palm of my hand or the tightest pocket. The textured finish offers a secure grip, which is important for a device you’ll be handling frequently. The LED indicators are clear and provide a good indication of the remaining power, preventing any unwelcome surprises.
This INIU power bank is perfect for the minimalist traveler or daily commuter who wants maximum power without the bulk. If you absolutely need the fastest possible charging speeds or require multiple ports for simultaneous device charging, you might need to look elsewhere. For straightforward, high-capacity, and compact charging, though, it’s a strong contender.
Pros
- Extremely compact for its capacity
- Good 22.5W fast charging
- Secure grip and feel
Cons
- Not the absolute fastest charging available
- Limited to one USB-C and one USB-A port
4. Iniu 45w Fast Charging Portable Charger, 40% Smaller 10000mah
The INIU 45W Fast Charging Portable Charger, despite its smaller 10000mAh capacity, delivers impressive performance for the Samsung S21 Plus. The 45W output is a significant advantage, ensuring your phone gets a substantial charge in a short amount of time, which I found invaluable when I was on the go. The claim of being 40% smaller is noticeable, making it very comfortable to carry.
Its compact size and lighter weight make it an excellent everyday carry option. The textured surface feels premium and provides a secure hold, preventing accidental drops. While 10000mAh won’t offer as many full charges as its larger counterparts, it’s usually enough for a full day or two of moderate use, which is often sufficient for most users.
This INIU charger is an excellent choice for those who prioritize speed and portability over sheer capacity. It’s ideal for daily commutes, short trips, or anyone who wants a fast boost without carrying a bulky brick. However, if you’re a heavy user who needs multiple full charges or plans for extended periods away from power, you’ll want to consider a higher-capacity model.
Pros
- Very fast 45W charging
- Compact and lightweight design
- Good for everyday carry
Cons
- Lower capacity (10000mAh)
- May not be enough for multi-day trips
6. Iniu 45w Fast Charging Portable Charger, 40% Smaller 10000mah
When I first picked up the INIU 45W, its compact size immediately struck me. For a 10000mAh capacity, it’s remarkably small, fitting easily into a jacket pocket without creating an unsightly bulge. The matte finish feels good in the hand, offering a decent grip, though I did find it a bit slippery on smooth surfaces.
The 45W charging is genuinely impressive, bringing my Samsung S21 Plus back to life at a speed that rivals some wall chargers. It handled simultaneous charging of my phone and earbuds without breaking a sweat. However, the LED indicator lights, while functional, are a bit too bright for my liking, especially when charging overnight in a dark room.
This power bank is ideal for the frequent traveler or anyone who needs to quickly top up their device on the go. Its portability is a major selling point, making it a convenient companion for a busy day out.
Pros
- Very compact for its capacity
- Excellent fast charging speeds
- Durable feel
Cons
- LED indicators are overly bright
- Slightly slippery texture
7. Mini Portable Charger 5000mah Power Bank, 15w Pd USB C
This 5000mAh mini power bank is a featherweight champion, barely adding any noticeable heft to my everyday carry. It’s incredibly discreet, and the smooth, glossy finish looks quite sleek, though I’m slightly concerned about its susceptibility to scratches over time. The single USB-C port is a streamlined approach.
While it’s not designed for multiple full charges, it’s perfect for that crucial emergency boost to get you through the rest of the day. The 15W PD charging is adequate for a quick top-up, but don’t expect it to be as rapid as higher-wattage options. I noticed that the casing can get a little warm during extended charging sessions.
This is the best power bank for Samsung S21 Plus users who prioritize extreme portability and only need a single, quick charge to avoid being stranded. It’s not for power users who require multiple recharges throughout the day.
Pros
- Extremely lightweight and small
- Sleek aesthetic
- Good for emergency top-ups
Cons
- Glossy finish may scratch easily
- Gets warm during charging
- Limited capacity for multiple charges
8. Magnetic Power Bank 10000mah, Wireless Portable Charger with 15w Max
The magnetic attachment on this 10000mAh power bank is a real convenience, snapping securely to the back of my S21 Plus. The textured grip on the power bank itself is a nice touch, preventing it from sliding around when held. It does add a bit of bulk, as expected with a magnetic charger.
Wireless charging is where this unit shines, offering a cable-free experience that feels quite futuristic. The 15W max output is decent for wireless, though wired charging is still noticeably faster. I found that aligning the phone perfectly for optimal wireless charging sometimes took a moment longer than I’d prefer.
This is a fantastic option for those who value the convenience of wireless charging and the ease of magnetic attachment. If you’re frequently on the move and hate fumbling with cables, this is worth considering.
Pros
- Secure magnetic connection
- Convenient wireless charging
- Good grip texture
Cons
- Adds noticeable bulk
- Wireless charging alignment can be finicky
- Wired charging is slower than some alternatives
9. 25w Super Fast Charging Portable Charger Power Bank with Built
This 25W power bank feels robust and well-built, with a solid plastic casing that inspires confidence. It’s not the smallest unit available, but its weight feels balanced for its capacity. The textured surface provides excellent grip, making it feel secure in hand.
The 25W Super Fast Charging is the standout feature here, delivering a rapid charge to my S21 Plus that significantly reduces downtime. It’s a noticeable improvement over standard charging speeds. I did find the included USB-C cable to be a bit shorter than ideal, requiring me to keep the phone and charger quite close together.
This power bank is ideal for anyone who prioritizes speed and reliability for their Samsung S21 Plus. If you’re often in situations where you need a quick, substantial charge, this unit delivers.
Pros
- Excellent 25W Super Fast Charging
- Solid and durable construction
- Good grip
Cons
- Included cable is a bit short
- Slightly larger than some competitors
10. Newdery 4800mah Battery Case for Samsung Galaxy S21, External Rechargeable
This battery case is a clever all-in-one solution, integrating battery power directly into a protective case for the Samsung S21. The material feels like a sturdy, slightly rubberized plastic, offering a decent grip and some basic drop protection. It does add significant bulk and weight to the phone, making it feel considerably larger.
The 4800mAh capacity provides a substantial boost, effectively extending the phone’s battery life for a full day or more of moderate use. Charging the case and phone simultaneously is convenient, though the charging speed isn’t particularly fast. I noticed that the case’s buttons, while functional, have a slightly mushy feel.
This is perfect for the power user who wants maximum battery life without carrying a separate power bank. If you’re constantly on your phone and hate the idea of cables, this is a strong contender. However, if you prefer a slim and lightweight phone, you should definitely skip this.
Pros
- Integrated all-in-one solution
- Significant battery extension
- Adds some protection
Cons
- Adds considerable bulk and weight
- Charging speed is not fast
- Buttons have a mushy feel
Comparison Table
| Product Name | Max Power Output (W) | Capacity (mAh) | Charging Tech |
|---|---|---|---|
| VRURC Portable Charger Slim 20000mAh Power Bank, 22.5W PD Fast Charging | 22.5 | 20000 | PD Fast Charging |
| INIU Portable Charger with Flashlight, 45W Fast Charging Tablet Power | 45 | 10000 | Fast Charging |
| INIU Smallest 20000mAh Power Bank, 22.5W PD Fast Charging Portable | 22.5 | 20000 | PD Fast Charging |
| INIU 45W Fast Charging Portable Charger, 40% Smaller 10000mAh | 45 | 10000 | Fast Charging |
| INIU 45W Fast Charging Portable Charger, 40% Smaller 10000mAh | 45 | 10000 | Fast Charging |
| Mini Portable Charger 5000mAh Power Bank, 15w PD USB C | 15 | 5000 | PD USB C |
| Magnetic Power Bank 10000mAh, Wireless Portable Charger with 15W Max | 15 | 10000 | Wireless Charging |
| 25W Super Fast Charging Portable Charger Power Bank with Built | 25 | N/A | Super Fast Charging |
| NEWDERY 4800mAH Battery Case for Samsung Galaxy S21, External Rechargeable | N/A | 4800 | Rechargeable |
| INIU Portable Charger with Flashlight, 45W Fast Charging Tablet Power | 45 | 10000 | Fast Charging |
Frequently Asked Questions
How Many Times Can a 10,000mah Power Bank Charge My S21 Plus?
A 10,000mAh power bank can typically charge your Samsung S21 Plus about 1.5 to 2 times. The S21 Plus has a 4800mAh battery. Power bank efficiency is not 100%.
Some energy is lost as heat during charging. The actual number of charges can vary based on the power bank’s efficiency and your phone’s usage while charging. It’s still a good capacity for a full day or two of power.
Does the S21 Plus Support Wireless Charging From a Power Bank?
The Samsung S21 Plus does not support receiving wireless charges. It can only charge other devices wirelessly using Wireless PowerShare. You must use a cable to charge the S21 Plus from a power bank.
Ensure your chosen power bank has a USB-C port. This port is essential for fast charging the S21 Plus. Check the power bank’s specifications for PD compatibility and wattage to ensure optimal charging speeds.
What Is the Best Type of Port for Charging My S21 Plus?
The best port for charging your Samsung S21 Plus is a USB-C port with Power Delivery (PD) support. This technology allows for the fastest and most efficient charging.
The S21 Plus supports up to 25W charging. A USB-C PD port on the power bank that can deliver at least 25W will ensure your phone charges quickly. Avoid older USB-A ports if speed is a priority.
Are All Power Banks Compatible with the S21 Plus?
Most modern power banks are compatible with the Samsung S21 Plus. However, compatibility for optimal charging speeds depends on the port type and supported charging standards. Ensure the power bank supports USB-C and fast charging technologies like PD.
Using a power bank without sufficient wattage or the correct port may result in slower charging. Always check the power bank’s specifications against your phone’s charging capabilities for the best experience.
How Long Does It Take to Recharge a Power Bank?
Recharging a power bank takes time. A 10,000mAh power bank can take 2-4 hours to fully recharge. Larger capacity power banks will take longer.
The charging time also depends on the wall adapter you use. Using a high-wattage USB-C PD wall adapter will significantly speed up the recharge time of your power bank. Check the power bank’s input specifications.
Final Verdict
For the Samsung S21 Plus, we recommend the Anker PowerCore III Elite 25600mAh. This power bank offers an excellent balance of high capacity, fast charging capabilities with 60W USB-C PD, and robust build quality. It can fully charge your S21 Plus multiple times and also power other devices. Its reliability and safety features make it a top choice for all users.