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If your device is charging slower than expected, it is usually related to power requirements, cables, battery behavior, or device limitations — not a fault with the charger.

This guide explains the most common reasons and how to achieve the fastest possible charging speed.

 

1. Your Device Limits Charging Speed

Devices only draw the power they are designed to accept.

For example:

  • smartphones typically draw 18–30W

  • tablets may draw 30–45W

  • laptops may require 60–140W

Using a higher wattage charger will not force faster charging beyond what the device supports.

 

2. Proprietary Fast-Charging Technologies

Some brands use proprietary charging systems that require their original cables to reach maximum speeds.

Examples include:

  • OnePlus (SuperVOOC / Warp Charge)

  • Oppo / Realme VOOC

  • Huawei SuperCharge

Your device will still charge safely at the fastest supported standard speed when using third-party cables and chargers.

This is normal and not a defect.

 

3. Cable Power Rating Matters

Charging speed depends heavily on the cable used.

If a cable is not rated for high power:

  • charging speed may be reduced

  • laptops may not fast charge

  • power delivery may be limited

For best performance, use high-quality USB-C cables rated for the required wattage.

 

4. Battery Level Affects Charging Speed

Most devices charge fastest between 0% and ~70%.

Charging slows after ~80–90% because:

  • it protects battery health

  • it reduces heat buildup

  • it prevents overcharging

This behavior is built into modern battery systems.

 

5. Temperature & Safety Management

Charging speed may reduce when:

  • the device is warm

  • the charger is delivering high output

  • ambient temperature is high

This helps protect internal components and battery longevity.

 

6. Multiple Devices Sharing Power

If multiple devices are connected:

  • total charger output is shared

  • each device receives less power

  • charging speed may reduce

Disconnecting other devices allows maximum speed for a single device.

 

7. Laptop Power Requirements

Some laptops require higher wattage to charge at full speed.

If your charger provides less power than required:

  • the laptop may charge slowly

  • it may maintain battery level rather than increase

Check your laptop’s required wattage for optimal performance.

 

8. Port or Adapter Limitations

Charging speed may vary depending on:

  • the port used

  • travel adapters or extension boards

  • wall outlets with unstable power

Plug directly into a wall outlet for best results.

 

How to Get the Fastest Charging Speed

  • use a high-wattage charger suitable for your device

  • use a cable rated for the required power

  • charge one high-power device at a time

  • keep devices cool and ventilated

  • expect slower speeds above 80–90% battery

 

Good to Know

  • devices only draw the power they need

  • charging slows near full battery by design

  • proprietary fast charging may require original cables

  • multiple devices share available power

 

If you still believe your device is charging unusually slowly, please submit a request and our Customer Happiness Team will be happy to help.

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