What Will A 400 Watt Power Inverter Run

A 400 Watt power inverter can be a convenient and useful tool, particularly for those who spend extended periods of time in their vehicles or for those who live in remote locations. In this article, we will be discussing the capabilities of a 400 Watt power inverter, as well as providing an important outline of these devices and their benefits.

Important Outline

Understanding Power Inverters

A power inverter is a device that converts direct current (DC) power from batteries or solar panels into alternating current (AC) power, which is commonly used by household appliances and electronics. There are various power inverter models available in the market, differing in terms of their wattage outputs. In this case, the focus will be on the capabilities of a 400 Watt power inverter.

It is important to note that the 400 Watt is its continuous power capacity, meaning it can sustain providing up to 400 Watts of power for an indefinite period. These inverters also typically have a higher peak power output for short surges, around 800 Watts.

Examples of Devices a 400 Watt Power Inverter Can Run

A 400 Watt power inverter is suitable for running relatively low-wattage appliances and devices. Some examples include:

1. Laptops and Notebook Computers: Most laptops consume between 50 to 100 Watts of power, making a 400 Watt power inverter ideal for these devices.
2. Smartphones and Tablets: A 400 Watt power inverter is more than sufficient to charge your smartphones, tablets, or digital cameras.
3. LED or LCD TVs: Small to medium-sized LED or LCD TVs consuming around 60 to 100 Watts can be powered by a 400 Watt inverter.
4. Gaming Consoles: Most gaming consoles like PlayStation or Xbox require between 100 to 150 Watts, allowing a 400 Watt inverter to power them with ease.
5. Small Home Appliances: You can power small home appliances like electric fans, lamps, or routers that typically require less than 100 Watts of power to operate.

Limitations of a 400 Watt Power Inverter

It is crucial to be aware of the limitations associated with a 400 Watt power inverter. High-wattage appliances like air conditioners, refrigerators, or microwave ovens cannot be powered by a 400 Watt inverter, as they exceed the continuous capacity of the device. Such appliances may require a power inverter with a higher capacity of 1000 Watts or more.

Understanding Power Consumption and Efficiency

To maximize the efficiency of your 400 Watt power inverter, you should always aim to use devices or appliances whose combined wattage is below its maximum capacity, which prevents overloading and possible damage or malfunction. Moreover, always check the power consumption of each item before using the inverter to avoid exceeding its limits.

In conclusion, a 400 Watt power inverter is useful for powering or charging various low-wattage devices and small household appliances. Careful consideration of your devices’ power consumption and the device’s capacity will ensure that your power needs are met efficiently while avoiding overloads and maintaining optimal performance.

Step by Step Guide

In this section, we will provide you with a step-by-step guide on how to use a 400 Watt power inverter:

Step 1: Choose the Right Inverter

Make sure you select a power inverter that meets your power needs. A 400 Watt inverter is suitable for running low-power devices and appliances, as discussed earlier. Higher-wattage devices will require more powerful inverters.

Step 2: Check Your Devices’ Power Consumption

Before connecting any device to the power inverter, ensure you thoroughly check its power consumption details, usually available in the user manual or on the device itself. This way, you avoid overloading the power inverter or damaging your devices.

Step 3: Connect the Inverter to the Power Source

Power inverters typically require a 12V DC source like a car battery or a solar panel system. Make sure you carefully connect the inverter to the power source, following the manufacturer’s instructions and guidelines to ensure safe and efficient operation.

Step 4: Plug in Your Devices

Once the inverter is securely connected to the power source, you can start connecting your devices or appliances to the inverter’s AC output sockets. Be sure not to exceed the inverter’s maximum load capacity of 400 Watts.

Step 5: Switch the Inverter and Devices On

Turn on the power inverter first, following the manufacturer’s instructions. Once it’s on and running, you can start switching on your devices or appliances, one by one.

Pros and Cons

Here, we will discuss the various advantages and disadvantages of using a 400 Watt power inverter:


1. Portability: A 400 Watt inverter is compact and portable, making it suitable for use in cars, RVs, boats, or remote locations where grid power is unavailable.
2. Cost-effective: 400 Watt power inverters are relatively inexpensive compared to inverters with higher capacities, providing an affordable solution for moderate power needs.
3. Versatility: These inverters can power a wide range of low-wattage devices and appliances, making them suitable for various purposes and situations.


1. Limited capacity: A 400 Watt inverter is not suitable for high-power devices and appliances, which means you may need to invest in a more powerful inverter if your requirements change.
2. Efficiency: Power inverters are generally less efficient when operating at low power levels, which can lead to energy loss and increased wear on your batteries.


Can I use a 400 Watt power inverter to power my refrigerator?

No, a 400 Watt power inverter is not suitable for powering a refrigerator, which typically requires a higher wattage inverter (at least 1000 Watts or more).

Will a 400 Watt power inverter run a coffee maker?

It depends on the specific model of your coffee maker. If its power consumption falls within the 400 Watt capacity of the inverter, then it will work. Check your coffee maker’s power requirements before attempting to use it with the inverter.

Can I connect two devices to a 400 Watt power inverter simultaneously?

Yes, as long as the total power consumption of both devices combined does not exceed the 400 Watt capacity of the inverter.

How long will a battery last while using a 400 Watt power inverter?

The battery life depends on its capacity and the total power consumption of the connected devices. To calculate the estimated runtime of your battery, divide its capacity (in ampere-hours) by the total power consumption of your devices (in watts) and multiply by 12 (assuming the battery is 12V).


A 400 Watt power inverter is a valuable and versatile tool for users with moderate power needs. By providing a detailed outline, step-by-step guide, and addressing frequently asked questions, we hope that this article has better informed you about the pros and cons, as well as the practical uses for a 400 Watt power inverter. Always remember to check your devices’ power requirements before connecting them to the inverter to ensure a safe and efficient experience.

Leave a Comment