The basic components of charging are amperage, voltage, and watts. Amperage (or current) is the amount of electricity flowing from the battery to your phone or other connected device. Voltage is the speed or strength of the current. Watts are amperage multiplied by voltage. A common comparison used is a watering hose. Amperage (or current) is the hose width, voltage is the water pressure, and watts is how much water is coming from the hose.

Standard charging technologies deliver typically 5V and 1.8A so around 9W or less. By comparison ESONIC Fast Charge Delivers 18W-36W depending on the charging source. This is significantly faster than standard charging speeds.

3 things needed to work

A Device

A Fast Charged enabled device such as the latest iPhone, Samsung Android Phones and so on. Please see compatibility list.

A Cable

A Fast Charge Type-C to Lightning(iPhone/iPad) or Type-C to Type-C(Samsung/Android) cable

A Charger

A Fast Charge Enabled, Car Charger, Wall charger or Powerbank


There are multiple charging protocols but the most common are Power Delivery and Quick Charge, they are similar but have some important difference to note.
Quick charge is a proprietary technology which allows for the charging of battery powered devices, primarily mobile phones, at levels above and beyond the typical 5 volts and 2 amps which most USB standards allow for. To take advantage of Quick Charge, both the source providing power and the device must support it, meaning provided you have a Quick Charge charger and Quick Charger device an existing USB-A to USB-C you can charge faster using this protocol. This technology currently has a ceiling of 18W.


Power Delivery (PD) is a charging protocol specification for handling higher power and allows a range of devices to charge quickly over a USB connection (important to note this is a USB-C connection) This standard was developed by the USB Implementers Forum. It operates by facilitating a conversation between two devices to negotiate a power contract so they can determine how much power can be pulled from the charger. Power Delivery starts at the 5V setting and is configurable up to 20V. Using a Fast Charge USB-C cable, it can handle up to 60W.Power Delivery allows for power to flow both ways, with no set direction based on circuit or connection. For example, if you were to connect two phones that support Power Delivery with a USB-C charging cable, one phone could charge the other and vice versa.


In the future it will be able to deliver up to 100W (new cable type will be required) removing a few issues with charging larger devices using this protocol.

This standard as aforementioned allows for compatible devices to share power and act as non-discretionary power sources.

This technology will not overcharge your device but negotiate only the amount of charge as required by your device.