Fix OnePlus 9 Pro Slow Charging Issue Using RAVPower 26800mAh Power Bank

Understanding Why Your OnePlus 9 Pro Charges Slowly

The OnePlus 9 Pro is designed to charge quickly, thanks to its 65 W fast‑charging capability. Yet many users report a noticeably slower charging experience when using certain power banks or cables. A slow charge can be frustrating, especially when you’re on the go and need a quick top‑up before a meeting or a trip. The problem often lies in a mismatch between the phone’s charging protocol and the power source it receives.

The Role of the USB‑C Standard

The OnePlus 9 Pro uses the USB‑C connector, which supports a range of charging profiles, including USB‑Power Delivery (USB‑PD) and Qualcomm Quick Charge. If the power source cannot negotiate a higher power level, the phone defaults to a lower wattage, which extends charging time.

Cable Matters

Not every cable is created equal. A low‑quality or damaged USB‑C cable can drop the voltage and limit current flow. Even a perfectly fine cable can cause problems if it is too long or has excessive resistance.

Battery Health and Settings

The OnePlus software may limit charging speed to preserve battery health, especially if the battery is aging. Settings such as “Smart Charge” or “Battery Saver” can also throttle power input.

Why the RAVPower 26800 mAh Power Bank Is a Game‑Changer

The RAVPower 26800 mAh power bank has been engineered to support high‑power delivery while maintaining safety and reliability. Its key features make it ideal for tackling slow charging on the OnePlus 9 Pro.

Dual‑Port USB‑C Output

The device offers two USB‑C ports. One port is rated for 65 W USB‑PD output, matching the OnePlus 9 Pro’s maximum input. The second port provides 30 W, which is more than enough for other devices.

Smart Charge Technology

RAVPower’s Smart Charge algorithm automatically detects the connected device and delivers the optimal voltage and current. This eliminates the need for manual adjustments and guarantees that the OnePlus 9 Pro receives its full charging potential.

High‑Capacity Battery

With a 26800 mAh lithium‑polymer battery, the power bank can recharge the OnePlus 9 Pro’s 4500 mAh battery up to six times. This eliminates the need to carry multiple batteries or rely on stationary chargers.

Rapid Charging Input

The power bank supports 20 W input via USB‑C, allowing you to recharge it quickly. This ensures you’re not left waiting for the power bank itself to charge.

Safety Features

Over‑current, over‑temperature, short‑circuit, and over‑charge protection guard both the power bank and your phone. This is essential when dealing with high‑power levels.

Step‑by‑Step Fix Using the RAVPower 26800 mAh Power Bank

Below is a straightforward guide to eliminate slow charging on your OnePlus 9 Pro using this power bank. The steps cover cable selection, software settings, and practical usage tips.

1. Choose the Right Cable

• Use an official or certified USB‑C to USB‑C cable that supports at least 65 W output.
• Avoid cables longer than 1.5 m, as longer cables can introduce resistance and voltage drop.

2. Connect the Phone to the Power Bank

• Plug one end of the cable into the phone’s USB‑C port.
• Insert the other end into the 65 W USB‑C port of the RAVPower power bank.
• Verify that the LED indicator on the power bank shows active charging (usually a steady white or green light).

3. Disable Battery‑Saving Features on Your Phone

• Go to Settings > Battery > Battery Saver and toggle it off.
• Disable “Smart Charge” or any similar feature that limits input current.

4. Verify the Phone’s Charging Profile

• Open a battery‑monitoring app (such as AccuBattery or built‑in OnePlus app).
• Check the current charging wattage. If it reads below 45 W, the negotiation may have failed.

5. Reset the Power Bank

If the charging speed remains sluggish:

• Turn the power bank off by pressing and holding the power button for 3 seconds.
• Wait 10 seconds, then turn it back on.
• Reconnect the cable and phone.

6. Check for Firmware Updates

• Power Bank: Some RAVPower models receive firmware updates via the RAVPower app. Install any available updates.
• Phone: Ensure your OnePlus 9 Pro is running the latest software version. System updates often include improvements to charging efficiency.

7. Test with an Alternate Charger

To confirm that the issue lies with the original charger:

• Connect the phone to its original wall charger.
• Observe charging speed. If it matches or exceeds the speed with the power bank, the power bank is not at fault.
• If the power bank still outperforms the wall charger, you have successfully fixed the slow charging problem.

Optimizing Battery Health for Long‑Term Performance

Even after solving the immediate slow charging issue, it’s prudent to maintain your battery’s health. Follow these best practices:

• Avoid Over‑Charging: Disconnect the phone once it reaches 100 %. Some phones continue to charge beyond 100 % into “over‑charge” mode, which can degrade the battery over time.
• Keep Temperatures in Range: Charge in a cool environment (20–25 °C). High temperatures accelerate chemical degradation.
• Use Balanced Charging Cycles: Try to keep the battery level between 20 % and 80 % most of the time. Full discharges and full charges are okay but not daily.
• Monitor Battery Usage: Apps that drain battery rapidly or keep the screen on for extended periods can cause unnecessary stress.

Common Pitfalls and How to Avoid Them

Frequently Asked Questions

Can I use the RAVPower 26800 mAh power bank to fast‑charge my OnePlus 9 Pro in a day?

Yes, the 65 W USB‑PD output will fully charge the 4500 mAh battery in roughly 35–45 minutes, depending on the phone’s battery health and usage during charging.

What if my phone still charges slowly after following the steps?

• Ensure the cable is not damaged.
• Test with another USB‑C cable.
• Verify that the phone’s charging port is clean and free of debris.
• If problems persist, contact OnePlus support.

Does the power bank affect the phone’s software updates?

No, the power bank does not interfere with software updates. However, it’s wise to keep both devices updated to ensure optimal compatibility.

Is it safe to charge the power bank with a standard wall charger?

Yes, but use a charger that supports at least 20 W input to keep charging times reasonable. Over‑charge protection will prevent damage.

Conclusion

A slow charging experience on the OnePlus 9 Pro often stems from mismatched power delivery, inferior cables, or software settings. The RAVPower 26800 mAh power bank provides a reliable, high‑capacity solution that aligns perfectly with the phone’s charging protocol. By following the step‑by‑step guide, selecting the right cable, and enabling the phone’s optimal settings, you can restore fast charging and keep your device ready for anything. This approach not only solves the immediate issue but also promotes long‑term battery health, ensuring your OnePlus 9 Pro remains a powerful tool in your daily life.