The power of mobile phone chargers is often overlooked. Understanding its power helps optimize the charging performance of mobile phones and the long-term use of batteries. So how many watts does a mobile phone charger have? Here we will tell you the answer and how to choose the right charger to protect your device.
Table of Contents
What is Charger Wattage?
Wattage refers to the rate of energy transfer and is a unit of power, usually measured in watts (W). On a phone charger, wattage refers to how much power the charger can provide to your phone. The higher the wattage, the faster the phone charges.
Wattage also has a formula, which is calculated by multiplying voltage (V) and amperage (A): W = V × A. Voltage refers to the potential difference, while amperage measures the current flowing through the charger. For example, a charger with 5 volts and 2 amps will produce 10 watts of power.
Common Wattage Ranges for Phone Chargers
Low-Power Chargers: 5–10W
They run at a slower speed, charge gently, and won’t overheat, making them ideal for overnight charging. This power is mostly found in USB-A chargers, so if you don’t care about charging speed, you can choose a 5-10w charger.
Standard Power Chargers: 10–18W
10-18W chargers strike a balance between charging speed and battery safety, shortening charging time while maintaining a stable charging capacity. They can fully charge most smartphones in 1-2 hours, making them suitable for daily use.Get a quote for Standard Power Chargers.
High-Power Chargers (Fast Chargers): 18–65W and Above
This charger is specially designed for fast charging, and your device can be charged to 50%-60% in 30 minutes, which is a very significant advantage. Although the charging speed is very fast, they have relatively high requirements for equipment, compatibility issues, and whether they meet industry fast charging technical specifications and safety.Contact us for VIDVIE 100w fast charger best quote.
Factors Influencing Charger Wattage Selection
Device Compatibility
Each charger has specific wattage requirements, either from the smartphone or the charging cable you’re using. Higher-wattage chargers and devices that don’t support fast charging won’t charge faster and are likely to wear out the battery over time.
Charging Speed
Fast charging is often more attractive to consumers and shortens charging time. However, faster is not always better. A balance must be struck between charging speed and safety. Multiple and continuous fast charging will also accelerate the degradation of battery performance.
Safety
Choose a charger with certified standards or one that has been tested multiple times, and keep safety in mind while enjoying fast charging.
How Many Watts Is Fast Charging iPhone?
The charger that supports iPhone fast charging has a power of 18W or higher. Only iPhone 8 and higher models are compatible with this function. When USB-C is adapted to a compatible charger, it can even charge to 50% in 30 minutes. If you use an iPhone, if you want to maximize charging efficiency, it is best to use an official or certified charger.
FAQ
How do I know the wattage of my phone charger?
The wattage is usually stated on the charger and can be calculated by multiplying the voltage (V) by the current (A)
Can I use a higher-wattage charger for my phone?
Of course you can, as long as your phone supports fast charging, the charger will regulate the power to a safe level.
Does using a low-wattage charger affect my phone?
It will charge, but it may charge more slowly, and the larger the battery, the less efficient it may charge.
Conclusion
Why do you need to know the power of your mobile phone charger? Because it is closely related to your mobile phone charging speed, battery health, etc. When choosing a charger, first consider the power requirements, charging speed, and long-term safety factors to better meet your needs.