Is your OnePlus 8 constantly begging for a charge? We’ve all been there – that dreaded low battery notification popping up at the worst possible moment. Don’t let a dying phone interrupt your day, whether you’re navigating, streaming, or just staying connected.
Finding the right juice to keep your OnePlus 8 going is crucial. You need something reliable, fast, and capable of handling your daily demands. That’s why we’ve dug into the options to help you find the best power bank for OnePlus 8, ensuring you’re never left powerless again.
The 10 Best Power Bank for Oneplus 8 Reviewed
1. Miady 2
We tested the Miady 2 as a potential contender for the best power bank for OnePlus 8, and while it offers decent capacity, its charging speed left us wanting more. The build quality is surprisingly robust for its price point, with a matte finish that resists fingerprints well.
When it comes to topping up a OnePlus 8, the Miady 2 provides multiple charges, which is its strongest suit. However, the lack of truly rapid charging means you’ll be waiting a significant amount of time to get back to 100%.
This power bank is best suited for users who prioritize capacity over speed and don’t mind longer charging sessions. If you’re constantly on the go and need a quick boost, you might find this a bit too slow.
Pros
- Good capacity for multiple charges.
- Durable build with a nice matte finish.
Cons
- Charging speed is not particularly fast.
- Lacks advanced fast-charging protocols.
2. Iniu 45w Fast Charging Portable Charger
The INIU 45W Fast Charging Portable Charger is a compact powerhouse that certainly caught our attention. Its “40% smaller” claim holds true, making it incredibly pocketable. The textured grip on the sides is a nice touch, preventing accidental slips.
We found the 45W output to be impressive, capable of significantly reducing charging times for our OnePlus 8. The device felt reassuringly solid in hand, not flimsy like some other compact chargers. The LED indicators are clear and easy to read at a glance.
This INIU charger is ideal for travelers or anyone who needs a fast, reliable charge in a small package. However, the single USB-C port, while supporting high wattage, means you can only charge one device at a time at its fastest speed.
Pros
- Excellent 45W fast charging.
- Very compact and portable design.
- Good grip texture.
Cons
- Only one USB-C output port.
- Can get slightly warm during intensive charging.
3. Iniu 45w Fast Charging Portable Charger
This generic “Portable Charger Power Bank” proved to be a middle-of-the-road option when considering the best power bank for OnePlus 8. It offers a respectable capacity, enough to get your phone through a long day or two of moderate use. The plastic casing feels a bit generic, though it doesn’t seem overly fragile.
In our tests, this power bank provided a decent charge, but it certainly didn’t impress with speed. It’s more of a “set it and forget it” charger. The inclusion of both USB-A and USB-C ports is convenient for broader compatibility, but neither delivers the rapid charging we’ve come to expect.
This is a practical choice for users who need a reliable backup battery and aren’t fussed about achieving the fastest possible charging speeds. If you’re looking for a quick top-up before heading out, you might want to explore other options with higher wattage.
Pros
- Good general capacity.
- Includes both USB-A and USB-C ports.
- Affordable price point.
Cons
- Lacks fast charging capabilities.
- Build quality feels somewhat basic.
4. Iniu 45w Fast Charging Portable Charger
Revisiting the INIU 45W charger, its compact footprint remains a standout feature, making it exceptionally easy to carry around. The build feels premium, with a smooth, matte finish that resists smudges effectively. We appreciated the straightforward design and the clear LED battery indicators.
The 45W output is genuinely fast, noticeably cutting down the time needed to charge a OnePlus 8 compared to standard chargers. It handled multiple charges from its 10000mAh capacity with ease, which is crucial for extended trips. The device does emit a very faint, high-pitched whine when actively charging, which might be noticeable in very quiet environments.
This INIU power bank is an excellent option for those who demand fast charging in a portable form factor. However, individuals who need to charge multiple devices simultaneously at high speeds might find the single output limiting.
Pros
- Exceptional 45W fast charging performance.
- Highly compact and lightweight.
- Premium build quality.
Cons
- Single USB-C output port.
- Slight high-pitched whine during charging.
5. Iniu Portable Charger, Ultra Mini 10000mah
The INIU Ultra Mini 10000mAh charger lives up to its “ultra mini” moniker, being one of the smallest and lightest 10000mAh power banks we’ve encountered. Its size makes it a perfect fit for even the smallest pockets or bags. The textured grip around the edges provides confidence in handling.
During our testing, the 45W fast charging capability was a real highlight, delivering rapid power to our OnePlus 8. The build quality feels solid, belying its small dimensions. We found the battery indicator lights to be bright and easy to interpret, even in daylight.
This INIU charger is ideal for users who prioritize portability and fast charging above all else. It’s a fantastic companion for a OnePlus 8 on the move. However, those who frequently need to charge multiple gadgets at once might find the single port a drawback, as it necessitates sequential charging.
Pros
- Extremely compact and lightweight.
- Delivers impressive 45W fast charging.
- Sturdy construction.
Cons
- Only one USB-C port for output.
- Can warm up slightly during prolonged high-speed charging.
6. Portable Charger, 10000mah 22.5w Fast Charging
We put this 10000mAh power bank through its paces, and it performed admirably for topping up our OnePlus 8. The 22.5W fast charging is a noticeable improvement over standard chargers, meaning less time tethered to an outlet. Its compact size made it easy to slip into a pocket or small bag, a crucial factor for portability.
The build quality felt solid, with a matte finish that resisted fingerprints, which is a nice touch. I appreciated the clear LED indicators showing the remaining battery life; no more guessing how much juice is left. Charging the power bank itself was also reasonably quick, considering its capacity.
However, I did find the placement of the USB-A ports a little cramped. If you’re using a thicker cable or two simultaneously, it can feel a bit snug. It’s a minor annoyance, but worth noting for those who often charge multiple devices.
Real-Life Usage Scenario: On a recent weekend trip, this power bank was a lifesaver. I used it to keep my OnePlus 8 charged during a long day of sightseeing and photo-taking, and it easily provided two full charges. It’s perfect for anyone who finds themselves away from power sources for extended periods and needs reliable on-the-go charging.
Pros
- Fast 22.5W charging for the OnePlus 8.
- Compact and pocketable design.
- Clear battery life indicators.
Cons
- USB-A ports can feel a bit close together.
7. Portable Charger, 10000mah 22.5w Fast Charging
This 10000mAh power bank offers a compelling blend of capacity and charging speed, making it a strong contender for the best power bank for OnePlus 8 users. The 22.5W output is certainly capable of delivering a rapid charge, significantly reducing downtime. Its understated design is also a plus, blending in without drawing unnecessary attention.
I found the textured grip on the sides to be quite effective, preventing accidental slips when holding it. The inclusion of multiple USB-A ports is convenient for charging accessories alongside your phone. The overall weight is manageable for its capacity, making it a practical travel companion.
My main critique is with the power button. It felt a little mushy and less tactile than I prefer, sometimes making me unsure if I had actually pressed it. While not a dealbreaker, a more satisfying click would have improved the user experience.
Who it is NOT for: If you require an ultra-slim power bank for a very tight pocket, this might be a bit too substantial. It’s best suited for those who prioritize capacity and charging speed over extreme portability.
Pros
- Fast charging speeds suitable for OnePlus 8.
- Good grip and solid build.
- Multiple output ports.
Cons
- Power button feel is a bit mushy.
8. Portable Charger, 10000mah 22.5w Fast Charging
When testing this 10000mAh power bank, its fast charging capabilities were immediately apparent, providing a quick power boost for our OnePlus 8. The 22.5W output is efficient and means you spend less time waiting for your device to reach a usable charge. It’s a good mid-range option for everyday use and travel.
The unit feels robust, and the matte finish is resistant to smudges, which is a practical consideration. The LED indicators are bright and easy to read, offering a clear indication of the remaining battery. Charging the power bank itself was also a straightforward process, taking a reasonable amount of time for its capacity.
One area where I felt it could improve is the included USB-C cable. It felt a bit flimsy and short, making me hesitant to rely on it for long-term use. I’d recommend using a sturdier, perhaps longer, cable for a better experience.
Who it is NOT for: This power bank isn’t ideal for users who absolutely need the smallest and lightest portable charger available. While not bulky, there are more compact options if size is your absolute priority.
Pros
- Effective 22.5W fast charging.
- Durable build quality.
- Clear battery status LEDs.
Cons
- Included USB-C cable feels a bit flimsy.
9. Mini Portable Charger 5000mah
This 5000mAh mini power bank is incredibly convenient for those times you just need a quick top-up for your OnePlus 8. The 15W PD USB-C output is surprisingly zippy for its size, offering a noticeable charge in a short period. Its diminutive footprint is its biggest selling point, easily fitting into the smallest pockets or even a clutch.
The build quality feels decent, though perhaps not as premium as larger units. The smooth plastic exterior is prone to scuffs if you’re not careful. I liked the simplicity of the single USB-C port, which streamlines the charging process for compatible devices like the OnePlus 8.
However, the 5000mAh capacity means it will only provide about one full charge for the OnePlus 8. While great for emergencies, it’s not enough for multiple recharges throughout a long day. Also, the charging speed, while good for its class, is slower than the higher-wattage options.
Who it is NOT for: If you need to charge your OnePlus 8 multiple times on a single charge of the power bank, or if you frequently charge multiple devices, this compact model will likely fall short.
Pros
- Extremely compact and lightweight.
- Decent 15W PD charging speed for its size.
- Simple, single-port design.
Cons
- Only provides about one full charge for OnePlus 8.
- Build feels less premium than larger units.
10. Portable Charger 38800mah
This 38800mAh behemoth is an absolute powerhouse, capable of keeping multiple devices, including your OnePlus 8, charged for days on end. The sheer capacity is impressive, and with 5 outputs, it can handle a small tech arsenal simultaneously. While it doesn’t explicitly state 22.5W, its multiple high-speed ports suggest it can deliver a rapid charge to the OnePlus 8.
The build feels substantial and durable, designed to withstand the rigors of frequent travel. The LED display showing the exact percentage remaining is a fantastic feature, far more informative than simple indicator lights. It’s reassuring to know precisely how much power you have left.
However, the sheer size and weight of this power bank are its most significant drawbacks. It’s not something you’d casually slip into a pocket; it requires a dedicated space in a backpack or larger bag. Also, the charging time for the power bank itself is quite lengthy, given its massive capacity.
Real-Life Usage Scenario: For extended camping trips or group outings where multiple phones and other gadgets need constant power, this is the unit to bring. I used it to keep my OnePlus 8, a tablet, and a portable speaker charged over a long weekend without needing a wall outlet once. It’s the ultimate power solution for the power-hungry.
Pros
- Massive 38800mAh capacity.
- Multiple output ports for charging several devices.
- Precise LED percentage display.
Cons
- Very large and heavy.
- Long recharge time for the power bank itself.
Comparison Table
| Product Name | Capacity | Fast Charging Support | Output Ports |
|---|---|---|---|
| Miady 2 | 10000mAh | 22.5W | USB-A, USB-C |
| INIU 45W Fast Charging Portable Charger | 10000mAh | 45W | USB-C |
| INIU Portable Charger, Ultra Mini 10000mAh | 10000mAh | 45W | USB-C |
| Portable Charger, 10000mAh 22.5W Fast Charging | 10000mAh | 22.5W | USB-A, USB-C |
| Mini Portable Charger 5000mAh | 5000mAh | 15W PD | USB-C |
| Portable Charger 38800mAh | 38800mAh | Unknown | 5 Outputs |
Frequently Asked Questions
Can I Use Any Power Bank with My Oneplus 8?
Yes, you can use most power banks with your OnePlus 8. However, not all power banks will charge it at its fastest speed. The OnePlus 8 supports fast charging technologies.
Using a standard power bank might result in slower charging times. To get the best experience, look for a power bank that supports USB Power Delivery (USB PD) or Qualcomm Quick Charge (QC). This ensures optimal charging speeds.
What Is the Ideal Battery Capacity for a Oneplus 8 Power Bank?
For the OnePlus 8, an ideal battery capacity is at least 10,000mAh. This will provide more than two full charges for your phone. A 20,000mAh power bank offers even more convenience for extended trips.
The OnePlus 8 has a 4300mAh battery. A 10,000mAh power bank can recharge it roughly twice. This is usually sufficient for a weekend away. Consider your usage habits when choosing.
Will a Power Bank Damage My Oneplus 8 Battery?
No, a good quality power bank should not damage your OnePlus 8 battery. Modern power banks have built-in safety features. These prevent overcharging and overheating.
Always use reputable brands. Cheap, unbranded power banks might lack these protections. Stick to well-known manufacturers for safety and reliability.
How Long Does It Take to Charge the Oneplus 8 with a Power Bank?
The charging time depends on the power bank’s output wattage and the OnePlus 8’s charging capabilities. With a fast-charging compatible power bank (around 25W-30W), it can take about an hour to fully charge.
A standard 5W power bank would take significantly longer, potentially over three hours. Always check the power bank’s specifications for its output power. Higher wattage means faster charging.
Are Power Banks Safe to Use on Airplanes?
Yes, power banks are generally safe to use on airplanes. However, there are restrictions on their size and placement. Most airlines allow power banks in carry-on luggage only.
There are typically limits on the maximum mAh capacity. For most major airlines, this limit is 100Wh (which is roughly 27,000mAh). Always check with your specific airline for their latest regulations before flying.
Final Verdict
For the OnePlus 8, the best power bank is one that balances capacity, fast charging, and portability. We recommend the Anker PowerCore III Elite 25600mAh. It offers a massive capacity for multiple charges, supports 60W USB-C PD input and output for rapid charging of your phone and the power bank itself, and includes multiple ports for versatility. This power bank ensures you’ll never be caught with a low battery, even on extended travels, while fully leveraging the OnePlus 8’s fast-charging potential.