That’s wasted electricity—technically, it’s called “no load mode,” but in reality it’s just another vampire. According to the Berkeley Lab’s testing, cell phone chargers in no load mode consume around 0.26 watts, and laptop chargers, 4.42 watts.

In laptops it is better to have the capacity in Watt hours. E.g. An average gaming laptop will have a battery capacity of 60 Watt-hours. Assuming the power consumption is 180 Watts during then there will be a runtime of 20 minutes.

As you may guess, laptops consume a lot less energy than desktops – they only use approximately 30 to 70 watts per hour.

1. Take your Laptop adapter and check the label on it . A number will be written with W.
2. Look at the back side of you laptop, there will be label or print saying Input = 19.5V -3.4 A.
3. Multiply the 19.5*3.4 = 65.96 W.
4. Now match the adapter rating against the laptop rating.

The short answer is yes you can use a laptop charger with a higher wattage, however, there are some caveats. The wattage rating of a laptop charger is a maximum rating which means that the charger is capable of providing power up to the output wattage rating and or course anything in between.

Universally designed to charge and power a variety of laptop computers. Surge protection, over-current protection, voltage protection and over-temperature protection….Specifications.

Is it possible to charge a laptop without its charger? Yes, and the easiest way to do it is with a universal adapter. Remember to always check the voltage, no matter the charging solution. If that doesn’t suit you, charge your laptop from a car battery or use an external battery charger.

Look for the amperage and the voltage required. Look up the model number online to find if there are compatible adapters available. The voltage and amperage of the adapter need to match the requirements of the laptop. Compare the connector type of the laptop adapter to any available adapters found online.

The universal charger will short the battery life and have bad impact on your phone. Most important of all, they are not safety.

Research has also found that using a wrong charger could with higher voltage capacity could lead to an increase in temperature of the device, which could lead to 2 times reduced lifespan of the device as well for every 15- to 20-degree centigrades increase in temperature.”

The short answer is; No. You should never intentionally use another laptop’s charger on your laptop. It doesn’t matter if you’re in a pinch or if your battery is about to die. Plugging a different charger that isn’t meant for your specific model will not lead to anything good.

The Boost Charge Wireless Charging Pad 10W has been engineered to charge Apple and Samsung smartphones at the fastest possible speed while delivering 5 watts to all other Qi-enabled devices.

Apple’s iPhones are designed to charge at a maximum speed of 7.5W, Samsung’s phones charge at 9W, and other Android phones support up to 10W. So while chargers that output less will charge your phone, they won’t do so quite as fast.

The most common solution is the 5V/2A charging which delivers 10W of power and pretty much every phone other there supports this charging rate. The real quick charging starts from there and up. USB Power Delivery is another quick charging standard and this one is not limited to a particular hardware manufacturer.

After more than 900 hours of testing since 2017, we’ve determined that the Belkin Boost Charge Wireless Charging Stand 10W is the best Qi (the industry-wide wireless-charging standard) charger for smartphones because it charges iPhones and Android phones faster than the competition.

Fast wireless charging is quickly outstripping universtal wired charging standards. The wide range of standards and speeds isn’t limited to just traditional wired chargers. Wireless charging is on the march too, promising blazing-fast speeds that outstrip the capabilities of most phones’ wired charging capabilities.

Myth #1: Wireless charging pads can damage the phone or its battery. Fact: Not entirely true. Chances of your smartphone getting damaged are high if you use a low-quality wireless charger. Some wireless charging pads are built to prevent damage to the phone while in use.

We’ve noticed that fast charging via wired chargers, technology that is getting speedier all the time, can make your phone very hot, which can’t be good for the battery, but that’s another question. As for this one – the short answer is no, wireless charging does not degrade your battery faster.

It’s perfectly safe to be in close proximity to a wireless charger, so you can continue to charge your phone on your nightstand overnight, or on your desk all day at work. The whole wireless charging process emits less radiation than a phone that is connected to a mobile network.

Android phone manufacturers, including Samsung, say the same. “Do not leave your phone connected to the charger for long periods of time or overnight.” Your battery will automatically stop charging when it’s full, but in some cases, once it drops to 99%, it will need more energy to get back to 100.