Wireless Charging Head (Car/Desk) FAQ

This is a collection of commonly asked questions about the operation of the Quad Lock Wireless Charging Head


What are the power adaptor requirements of the Quad Lock® wireless charger?

  • To achieve standard charging output of 5W - This requires an adaptor with a minimum output of 5 Volt/2 Amp*
  • Fast charging output 7.5W & 10W - Requires an adaptor with a minimum output of 9 Volt/1.67 Amp

*Most computer/laptop USB ports output 5V/0.5-0.9A so are not recommended for powering the Quad Lock® Wireless Charger. The minimum power requirements are 5V/2A but we recommend the use of a QC 2.0/3.0/4.0 (9V/1.67A) power supply as it will provide sufficient voltage and current required for fast charging (9V/1.67A)

The Quad Lock® dual USB Car charger is a good option for in car use:


What is the difference between standard and fast wireless charging?

Standard wireless charging is 5W. Fast Wireless charging is charging above 5W up to a maximum of 15W.
The Quad Lock Wireless charger only supports 5-10W wireless charging output, depending on your phone's wireless charging capabilities*.   

  • 5W (baseline power profile which works with all wireless charging phones)
  • 7.5W (iPhone 8, iPhone 10)
  • 10W (Samsung S8 onwards, iPhone 11 onwards)

*Some manufacturers have implemented their own Proprietary Extended Power Profile (PEPP) for their devices. This means unless you are using a charger specifically designed to support that PEPP, you are limited to the Base Power Profile of 5W wireless charging.

Wireless charging Speeds seem slower than charging via a cable?

Yes, unfortunately, even fast wireless charging is slower than an equivalent wired charger of the same wattage. This is because wireless charging is only 70-80% efficient meaning 20-30% of the power is lost during the wireless transmission process. We have an in-depth article around expected wireless charging speeds over here: https://support.quadlockcase.com/hc/en-us/articles/360001578175

My wireless charging head doesn't automatically start when I start my car.

In some cases the wireless charging head may not activate when your ignition is started when plugged into a 3rd party USB charger. This may be resolved by using our 12 Volt Charger or simply reconnecting your USB plug to your adaptor.

My phone has stopped charging on my wireless charger when it was previously working.

This is usually down to a recent software update and is most commonly resolved by turning your phone off and on again. If you're still continuing to have charging issues please feel free to reach out to our support team.

My phone gets hot when using the wireless charger? 

Wireless charging is only 70-80% efficient so the additional 20-30% of energy is converted into heat. In normal conditions this is not usually a problem, however using the wireless charger in your car in direct sunlight can compound the temperature and cause some phones to overheat.

Apple's guide to temperature regulation recommends keeping your phone out of direct sunlight or operating in a hot vehicle.

If this happens remove your phone from the charger and allow it to cool before further charging. If possible, positioning the phone/charger near an A/C vent can help keep the phone and charger cool. 

We have further information about expected wireless charging speeds and the effects of heat over here: https://support.quadlockcase.com/hc/en-us/articles/360001578175

Why are the LED light's flashing Green? 

This indicates that the wireless charger is not getting sufficient power to provide an optimal charge rate. It will still charge, but at a lower power level. We recommend using a power supply with a minimum of 5V/2A for normal wireless charging and 9V/1.67A for fast charging. 

The Quad Lock® dual USB Car charger is a good option for in car use:


Why are the LED light's flashing Blue?

Flashing blue indicates an error. Common errors include:

  1. A foreign object is detected, IE: metal object placed on the charging head, or a phone that does not support wireless charging.
  2. The charger is overheating. Once it cools down it will reset this error and continue operating. If you are getting this error when using the charger in car we recommend positing the charger near an A/C vent to help cool the device/phone during use.

Why don't you recommend the use of the Universal Adaptor with the Quad Lock® Wireless Charger?

The thickness from the Universal adaptor plus the phone case can create a too large distance between the wireless charging coils for the charger to work efficiently. Additionally we cannot guarantee the alignment of the adaptor on the case/phone which can impact the charging performance. 



If you have any further questions or concerns please submit a support request.

Can’t find your answer in our support center? Contact us directly.