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Best 1500 Watt Inverter – Buyer’s Guide

Voltworks 1500W Pure Sine Inverter

Power inverters allow you to convert Direct Current (DC) from batteries to Alternating Current (AC) used by devices and appliances. A typical inverter on the market is the 1500 Watt Power Inverter.

You have many models to sort through if you’re in the market for a 1500W Inverter. I have reviewed several 500 models available on the market and would like to provide an overview of some of the best choices.

Types of 1500W Inverters

Inverters can be divided into several categories, so the choice is not always straightforward.

This article focuses on off-grid inverters.

There are three major categories of inverters, and each main category comes in 3 primary input voltages and two main output voltages.

If you already know this, you can jump down to the selection below, but continue reading if you want more information.

This is a list of your primary inverter categories to consider.

  • Input Voltage – 12V, 24V, 36V, 48V
  • Output Voltage – 110/120V or 220/240V
  • Waveform – Pure Sinewave or Modified Sinewave
  • Design – Low-Frequency Pure sinewave or High-Frequency Pure sinewave
  • Functionality – Inverter or Inverter Charger.

Input Voltage

You will probably use a battery bank, so your inverter’s input voltage should match the nominal battery voltage – probably 12V, 24V, or 48V.

Once done, you can select the desired AC output voltage (120 or 240 VAC).

Output Voltage

Knowing the output voltage needs of your inverter is essential – 110/120V or 220/240V.

When determining your output voltage, although most appliances and electronics use 120V, pumps often use 240V.

Waveform

wave on an oscilloscope

This article discusses two primary types of waveform inverters – Sine Wave (Pure/True) and Modified Sine Wave.

Sine Wave (Pure/True) – This inverter uses AC – the type your local utility company provides. This is much better for more sensitive appliances and devices.

Pure Sine Wave inverters are also more expensive.

Modified Sine Wave – Rougher and less efficient is how best to describe this inverter. Some appliances and devices won’t work with a Modified Sine Wave inverter. However, they are often used for tools and essential appliances.

High-Frequency Pure Sine Wave

These inverters are usually less expensive, smaller, and don’t handle industrial loads as well as a low-frequency inverter. As a result, they are more common in retail sales.

High-frequency inverters are appropriate for many small appliances and devices but don’t work well long-term with high-torque tools, pumps, and motors.

High-frequency inverters are typically acceptable for the occasional user – camping, car camping, RV, boating, etc., if you only use them a few hours a week. They are also acceptable for small electronic devices used a few hours daily.

Low-Frequency Pure Sine Wave

These inverters have large iron cores, making them much larger and more durable. Low-frequency inverters operate much cooler and offer many features.

Multiple DC inputs and dual voltage outputs (120/240V) are often allowed.

If you are going to run compressors and air-conditioners, then consider low-frequency inverters. They are also appropriate if the equipment regularly runs and for long periods.

What Can a 1500W Inverter Run?

A 1500-watt inverter can run equipment or devices with a running power consumption of fewer than 1500 watts.

Running power is the power used consistently after the initial surge.

There are a few things to keep in mind.

  • Add up the watts being use – ie., light =60W + fridge=1,000W + TV=440W = 1500W
  • Surge or starting power consumption should be about 2-3x the running power consumption. Appliances with motors typically require a brief surge of power to start.
  • Total power consumption should not exceed 1500. You will need to turn off devices if it does.

Criteria for Choosing Your Power Inverter

Below are a few features to consider when choosing your inverter.

Rating

Planning is important. Make sure you determine the watts you need and don’t be too conservative. Instead, use the actual number of watts your electronics and appliances use.

Noise

Inverters use fans. Listening to these in a tight environment like your truck, RV, or boat is no fun. Check out the reviews, as these will often mention if they are noisy or not.

Number of Power Outlets

Power inverters are available with single outlets to power one device and multiple outlets to power multiple devices simultaneously. Make sure you consider your needs before making the purchase.

Number of USB Ports

Many power inverters come with Universal Serial Bus (USB) ports, allowing you to charge your cell phones, laptops, game consoles, power tools, and other electronics. They come in conjunction with the power outlets. Make sure you check how many are available.

Safety Features

Some inverters incorporate safety features to shut down the inverter at high temperatures, surge protectors, etc. There are many others, so review them and decide what you need. Inverters are not inexpensive. 

Size

Size often depends on where you are using your inverter. For example, it makes more sense to use a high-frequency inverter in a vehicle or where portability is important.

Using a low-frequency inverter may make more sense if you power your home or job site daily and for long hours.

A Few Items to Keep in Mind

  • Remote Starter does not mean you can wander around with it like your TV. Many are wired and only extend about 15 feet, so check the specifications.
  • No LCD Display does not mean any LED display, so check the specifications for these.

Best 1500 Watt MODIFIED Sine Wave Inverters

Kreiger 1500W, 12V Modified Inverter

8.8 out of 10
Krieger 1000W Inverter

This is a solid modified wave inverter at a good price. It uses quiet thermal fans and has 2 AC outlets and 2 USB ports. Also included are fuse assembly accessories, which is not always the case. This inverter has one of the best warranties for 3 years. Krieger is a dependable company, and at the time of this article, this inverter had 4.5/5 star reviews.

Durability
9/10
Performance
8/10
Customer Service
9/10
Price
9/10

Pros

Three Year Warranty

Installation Kit

LCD Display

Cons

Only two AC Outlets

Energizer 1500W, 12V Modified Inverter

8.3 out of 10
Energizer 1500W Modified Inverter

Energizer also makes a very good modified inverter, although the 2-year warranty still does not match Kreiger’s 3. The installation kit includes cables but no fuse kit like Kreiger. This is why Kreiger edges out Energizer for my top pick. Energize is still a good company, and with 4.5 out of 5-star reviews at the time of this article, Energizer has its fans.

Durability
9/10
Performance
8/10
Customer Service
8/10
Price
8/10

Pros

USB Ports are 2.4A

Easy to read LCD and LED

A quiet fan

Cons

Only installation cables

Giandel 1600W, 12V Modified Inverter

8.3 out of 10
Giandel 1500W Modified Inverter

Giandel makes good inverters, and this 1600W modified inverter is no exception. This inverter comes with cables and a remote starter and has all the safety features you need to protect your equipment.

Durability
8/10
Performance
8/10
Customer Service
8/10
Price
9/10

Pros

Remote Starter

Good Price

Intelligent cooling fan

Cons

Larger than some others

Best 1500W PURE SINE Wave Inverters

AIMS 1500W, 12V Pure Sine Inverter

8.5 out of 10
AIMS 1500W Pure Sine Inverter

AIMS has been making solar equipment for off-grid projects over twenty years, so they know inverters. They are also located in Nevada so service and tech. support are local to the US.

Durability
9/10
Performance
8/10
Customer Service
9/10
Price
8/10

Pros

Two Year Warranty

US Support

Durable, high-performing

Cons

No support accessories

No remote starter

Voltworks 1500W, 12V Pure Sine Inverter

8 out of 10
Voltworks 1500W Pure Sine Inverter

The 1500W Voltworks Inverter receives high-performance reviews. It has the safety features you need and comes with an LCD display, making it convenient when you need to monitor it while tucking it away.

Durability
8/10
Performance
8/10
Customer Service
8/10
Price
8/10

Pros

Remote LCD Display

Quiet Inverter

Multiple Output Ports/Outlets

Cons

No remote starter

Can't turn off the low-voltage alarm manually

GoWise 1500W, 12V Pure Sine Inverter

8 out of 10
Go Wise 3000W Inverter

This inverter by GoWise has a reputation for being durable, and handling equipment surges well at start-up. It is a well-made inverter with cables and a remote starter for convenience.

Durability
9/10
Performance
8/10
Customer Service
7/10
Price
8/10

Pros

Remote Starter Quality

Performance/Surge

Durably Built

Cons

Cables size

Hard to contact Service sometimes

Inverter is a little bulky

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