Phone quick chargers often become hot during charging, raising user concerns. But why does this happen, and should you be worried?

The global phone charger industry is expected to hit $35.2 Billion by 2027, making this discussion more crucial than ever. This brief article will explore the reasons behind charger heat, safety concerns, and why you should buy high-quality fast chargers.

The Working Mechanisms of Chargers and How to Avoid Heat

The heat generated by a charger is related to its working principle. Understanding how chargers work may help you avoid overheating problems.

How Chargers Work

Chargers operate based on a switching power supply mechanism. They receive alternating current (AC) when you plug them into an electrical outlet. Chargers convert this AC into the direct current (DC) that your phone’s battery requires.

The charger contains various components that facilitate this conversion:

  1. Transformers help step down the high voltage of the AC to a lower voltage suitable for charging your phone.
  2. Rectifiers convert the AC into DC by allowing current flow in one direction.
  3. Capacitors store electrical energy to smooth out any voltage fluctuations.
  4. Integrated Circuits (ICs) monitor the battery’s voltage and current levels, adjusting them to ensure safe and efficient charging. They protect against overheating by controlling the charging current.

Why Phone Chargers Get Hot During Charging

Phone quick chargers can get hot during charging due to several reasons:

  1. Chargers convert the alternating current (AC) from the power outlet into the direct current (DC) for charging your phone. This process involves transforming electrical energy, which can generate heat as a byproduct.
  2. Electricity encounters resistance in the various components, such as transformers, rectifiers, and wires, leading to energy dissipation. Some energy is lost as heat during the conversion and regulation processes.
  3. Fast charging technologies and high-power chargers deliver higher currents to charge devices faster. The increased current flow can generate more heat due to the increased power being transferred.

It is normal for a charger to generate some heat during charging, but overheating can cause a lot of damage.

Damages of Overheating

Overheating of phone quick chargers can lead to several potential damages:

  1. Excessive heat in the charger can pose a fire risk, especially if the heat is not dissipated properly or if there are flammable materials nearby.
  2. Overheating can harm both the charger and the connected device. It may cause internal components to degrade, reducing the charger’s lifespan.

Continuous overheating can impact the charger and phone efficiency, leading to slower charging speeds, unstable power delivery, and slow performance.

How to Prevent Your Phone’s Charger from Overheating

To prevent your phone’s charger from overheating, you can follow these recommendations:

  1. Invest in a good phone quick charger from a reputable manufacturer designed specifically for your phone model.
  2. Avoid covering the charger or placing it in confined spaces while it’s in use.
  3. A hard, flat surface is the most ideal charging place since it can facilitate heat dissipation.

Avoid intensive tasks such as gaming or running resource-intensive apps while charging to minimize the risk of overheating.

Get Huntkey Phone Chargers

Given the large number of chargers on the market and the usual problems like heating, choosing one can be tricky. However, Huntkey can provide you with some quality phone quick chargers.

65W Fast Charger (1C2A)

The first phone quick charger on this list is the 65W Fast Charger based on the American Standard. It comes with two USB-A and one USB-C port, providing a maximum output of up to 47W. Let’s look at some of its other noteworthy features:

  1. The smart chip provides fast charging without damaging the battery.
  2. Protection from overcharging, overheating, and short-circuit.
  3. Charges devices other than the phone, such as laptops and tablets.
  4. Foldable plug for easy portability.

100W GaN Fast Charger

Our second charger on the list is also based on the American Standard and can charge notebooks, tablets, phones and accessories. The 100W GaN Fast Charger is 40% smaller than similar chargers.

Let’s delve into some of the key features of this 100W type c charger:

  1. Compatible with all kinds of devices that support USB-C charging.
  2. The UL standard ensures world-class safety.
  3. Protects devices from common issues like overheating, over-charging, etc.
  4. Provides fast charging with a much smaller footprint.

In addition, Huntkey also provides 18W, 20W, 30W, and 45W phone quick chargers for devices that need lower power.


If you want to protect your phone, please follow the advice given here, such as proper airflow and avoiding phone usage while charging. Moreover, purchasing quality phone quick chargers from Huntkey is also of great importance. We provide fast chargers that juice up your phones blazingly fast while preventing common problems like overheating. So, book your phone quick charger today and power up your phone swiftly and safely.