What can you do if your laptop is out of power when you are facing heavy affairs in long-distance traveling by car? You may complain: My car doesn’t have an 110VAC power supply. I can't charge my laptop. Indeed our car is only equipped with one or more 12VDC power supply, we usually use it as a cigarette lighter. So it cannot supply AC 110V or 220V power to ordinary household appliances. At this time, if you have a car inverter, the laptop charging problem will be completely solved.
Currently, there are all kinds of car inverter in the market. Some are cheaper for dozens of dollars, and some are even thousands of dollars. The maximum power can reach from tens of watts to hundreds of watts. Then which car inverter is the best for a laptop?
First, let's briefly explain the working principle of the car inverter.
The car inverter is a small device that can convert 12V or 24V DC power into 110V or 220V AC power. The 12V/24V DC power is from the car battery. Though a car inverter, the car power will be converted to AC power and powered for household appliances.
The power of a general laptop is about 60W ~ 70W. So for common user, buying a 150W car inverter is completely enough. Because most family cars have the power of 12VDC and ＜20A current, that is to say, it allows the maximum of about 230 watts appliances. And even some older cars only allow current of 10A. So we cannot blindly seek high power car inverter. Currently connect 12V inverter with power 150W or less to car for electrical appliances use is the best choice. For some outdoor workers, they need to use high-power electrical appliances for finishing their works. So they can choose power inverter with higher power of 300W to 3000W, which should be connected to car battery directly.
A 150W car inverter generally has the following characteristics:
- Voltage: Input voltage DC 12V, output voltage AC 110V±10V or AC 220V±10V.
- Power: Continuous power 150W, peak power 300W.
- Dual USB port: 5V/1A USB port and 5V/2.1A USB port.
- One AC outlet to charge the laptop, tablet, phone and other mobile devices.
- A power indicator, a digital display for current and a card slot.
- Internal cooling fan with 2-stage temperature control function
- Overload protection, overheat protection and short circuit protection.
A 150W DC 12V to AC 110V/220V car inverter has a small size of 82*64*38cm, light weight of 0.3kg (0.66 lb) and low price $67.98. Its outstanding design is perfect for charging your laptop on the go. At the same time, you can also charge your phone or tablet with a USB port. However, it should be noted that the sum of the power of all charging devices at the same time cannot be greater than 150W.