Power Inverter

A power inverter is basically a device that converts DC (direct current) power into conventional AC (alternating current) power. It allows you to operate your household electrical equipment using the power produced by a vehicle or by various renewable energy sources such as wind turbines or solar panels. However, with so many types of inverters available on the market, it can be a bit difficult to find exactly what you need. Therefore, after a lot of research into the advantages and disadvantages of various models found in the current market, we picked our final 5. Take a look at the matrix below and choose the one that meets your expectations.

Top 5 Power Inverter Comparison

1. Whistler XP3000i 2. Power Bright APS600-12 3. KRIËGER KR1500 4. ERAYAK 1000W 5. BESTEK 300W
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Manufacturer Whistler PowerBright KRIEGER ERAYAK BESTEK
Model XP3000i APS600-12 KR1500 8099U MRI3011BU
Dimensions 3.54 x 8.9 x 15.5 inches 3.54 x 8.9 x 15.5 inches 13.1 x 5.6 x 2.7 13.6 x 10 x 5.8 inches 6.7 x 2.4 x 6 inches
Weight 12.5 pounds 8 pounds 4.52 pounds 4.9 pounds 1.1 pounds
What’s in the box? 3000 Watt Inverter, User Guide 600W Pure Sine Inverter, User Guide 1500W Inverter, 1 set of 3 FT 2 gauge 100% copper cables, In-line fuse, User Manual 1000W Inverter, 6 internal 20 amps Fuse, User Guide 300W Inverter, User Manual

Product Specifications

Maximum Continuous Power 3000W 600W/650W 1500W 1000W 300W/360W
Maximum Surge Capability (Peak Power) 6000W 1000W 3000W 2000W 700W
USB Port 5V 2.1A N/A 2 x 5V/max. 2.1A (iPad) 5V 3.1A DC 5V, 4.2A
Input 12V DC 10-15V DC 24VDC, 80A 12V DC 12V DC
Output AC110 115VAC 105-125V, 13A ACV110 110V~120V
Max Outer Temperature 50℃-80℃ < 65 C 65°C Max 60℃-70℃ N/A
Input Over voltage Protection 15.5+/-0.5 volts DC 15V 31 +/- 0.3 VDC DC 15V-16V DC 15V-16V
Input Low voltage Protection 10.0+/-0.5 volts DC 10V 21 +/-0.3 VDC DC 9.2-9.8V DC 10V-11V
No Load Current Draw < 1.3 < 0.85A < 0.5A DC < 0.5A DC < 0.5A DC
AC Receptacle 3 North American 3 Prong 2 AC Receptacles 2 Standard North American 3AC outlets 3 Grounded AC outlets 2AC outlets


Thermostat Controlled Fan Built-in Thermo Cooling Fan Wired remote control LED light Indicator
Overload Indicator Overload Indicator Tablet Charging Built-in cooling fan Durable metal housing
Electronic Circuit Protection LCD display 24-inch cigarette lighter plug


Warranty 2-year 1-year parts and labor 3-year parts and labor 1-year, 30 days return 18-months
Customer Support
Online Manual

Power Inverter Reviews

1.Whistler XP3000i

It should come as no surprise that we selected the Whistler XP3000i as the most efficient model out there. It stands out because it has a power rating of 300 watts and it can support a watt peak range of 6000 watts for medium-sized appliances, including water pumps, heater, various electric power tools and more others. It comes with three AC outlets and two USB charging ports. The 110V AC outlets are for laptop and TVs, while the 5 Volt 2.1A Max USB ports can be used for smartphones, tablets and other small devices. As you probably know, the purpose of a power inverter is to convert direct current into alternating current. The Whistler XP3000i takes in 12V DC power and converts it to 110V AC power. As compared to other similar products, it is equipped with a digital volt/watt meter that allows you to monitor the power usage. More than that, for easy and convenient use, it comes with a remote control.

2.Power Bright APS600-12

There are countless types of mountable inverters on the market but the Power Bright APS600-12 is one of the best products we reviewed. It is a powerful device that produces 1000 watts and provides 600 watts at a continuous rate. You may find it extremely useful to charge your electronic devices such as laptops or smartphones when there is no other source of energy. What we really like about this inverter is that it is extremely durable. It features an anodized aluminum case that provides durability and protection no matter what kind of conditions you put it through. Another thing that we liked about the APS600-12 is the thermo cooling fan that comes with it. This is a built-in cooling fan, so you just have to turn in on and enjoy its power. Considering that it comes with so many features, the price tag is more than reasonable.


The KRIËGER KR1500 is another inverter whose incredible features place it in the third position. There are so many reasons for purchasing this 12V model. First of all, it delivers great performance. The main purpose of this inverter is to charge various electronic devices, including laptops, tablets, smartphones and other small appliances. It produces 1500watts at a continuous rate and provides 3000 watts of peak power. More than that, it is equipped with an LCD screen which allows you to see the input and the output voltage as well as the battery level. Aside from being powerful and extremely efficient, it is also very easy to use. It comes with an installation kit to ensure you are using it correctly. Overall, if you are looking for a quality model, the KRIËGER KR1500 is the best choice you can make.

4. ERAYAK 1000W

Even though it is less powerful than other similar products, the ERAYAK 1000W is our fourth recommendation. It impressed us with its features and durable construction which makes it stands up to harsh environments. The ERAYAK produces 1000 watts of continuous power and 2000 watts of peak power. More than that, it is equipped with dual intelligent 3.1 A USB ports, built-in cooling fan and LED lights. Plus, it has six internal 20 amps fuse. As compared to the BESTEK 300W, the ERAYAK inverter is equipped with a battery clamp. This is extremely useful, especially if you want to connect the device directly to the battery. Also, there is an overheat, overload and anti-short circuit protection. However, like any other product, it also has a few drawbacks. For example, in comparison to the KRIËGER KR1500 which has a 3-year warranty on parts and labor, this model only has a 1-year warranty. It is not as long as other warranties but is a plus that many manufacturers don’t offer. All in all, if you are in need for a ”pure sine wave” inverter, the ERAYAK 1000W is one of the best product on the market.

5. BESTEK 300W

With so many power battery inverters on the market, it is a bit difficult to choose the right one. With a staggering 4 stars reviews on Amazon, we are proud to include the BESTEK 300W on our list. It provides 700 watts of peak power and 300 watts of continuous power. Plus, it comes with 2 AC outlets and 2 USB ports for multi-purpose charging. In what regards the multi-protection, take note that it is equipped with a built-in 40 amps to fuse that protects your device against overheating, overloads, overcharging and short-circuiting. Its compact design makes it perfect for use on trips, camping and picnic. Also, its durable metal housing protects the inverter from drops and bumps. More than that, its built-in cooling fan is made to reduce heat and prevents battery damage. The BESTEK 300W is covered by a 2-year warranty. Overall, this inverter is surely an option worth taking into consideration.

Things to Consider When Picking an Inverter

As mentioned above, there are so many models of inverters in the marketplace, that finding the right one could be a backbreaking task. You may find many different sizes and multiple brands of power inverters. Therefore, in order to find exactly what you need, we have gathered a few factors that you need to consider before making a purchase.

  • Choosing the right inverter size

  • The size of your inverter strongly depends on the watts/amps of what you want to operate. It is advisable to opt for a larger inverter than what you need. On the other hand, it is very important to know that a big inverter cannot be used for all your household appliances. While a TV is rated at 250 watts, a microwave is rated at 1000 watts and a laptop at 95 watts. Take a look at their continuous power and add 20 percent. This way, you will notice that the needed power will be over 1600 watts. What you need to understand is that your chosen inverter should be at least 10% to 20% more than your largest load.

  • Power efficiency

  • The power efficiency is an important factor to consider when purchasing a high inverter. If you are still wondering why this is so important for an inverter, remember that an inverter has the main purpose to convert DC power into AC power. The higher its efficiency is, the less power it loses in the conversion. Furthermore, the lost energy becomes heat that warms up the inverter. Therefore, before making a purchase, take a look at its power efficiency.

  • Power wattage

  • As you probably know, the power wattage is directly related to the continuous power wattage that an electronic device requires to operate. Additionally, there is the surge or peak power wattage which occurs when a device is turned on. However, household appliances that are equipped with a powerful motor need a very high surge power to start up.

  • Online real reviews

  • With the explosion of the internet, it is almost impossible not to find some useful reviews about your favorite models. It is recommended to read customers reviews about the product you plan to buy. You may find some useful reviews which can help you a lot in your decision.

What is Behind our Ratings

After reviewing and testing several types of inverters, we can truly confirm that it is quite complicated to find exactly what you need if you have no idea about these devices. However, as outlined above, there are a few things you need to consider when looking for an inverter.

  • Peak power

  • You should probably know that an inverter needs average or typical power and surge or peak power to operate. Peak power is the power that an inverter is able to supply for short time. There are a few household appliances, especially the heavy current ones that need peak power to start up. In what regards the typical power, this is the power that an inverter provides on a regular basis. Keep in mind that it is much lower than the peak power and it is used in estimating the capacity of the battery. With this in mind, the inverters should be sized for their typical continuous power and peak load.

  • Input voltage

  • A power inverter needs a stable DC power source to operate. The input voltage definitely depends on various factors, including size, capacity and purpose of the device. To better understand we have gathered a few examples:

  • Smaller inverters that run from a rechargeable battery require 12V DC
  • The most common standards for home energy systems are 24, 36 and 48V DC
  • They require 200 to 400V DC, when they use power from solar panels
  • They require 300 to 450V DC, when they use power from electric car battery

If you are interested in buying an inverter, make sure you opt for one that matches the voltage of your battery. In simple terms, if you are using a 12V DC battery, make sure you opt for a 12V DC inverter.

  • Output voltage

  • The alternating current (AC) voltage of an inverter is regulated at 120/240VAC. It has to be the same as the grid line voltage, even if there are changes in the load that it is driving. This way, it is able to power various electronic devices made for standard line power. Also, it is very important to know that the AC output frequency of an inverter has the same standards as power line frequency, 50 or 60 hertz. It is important to remember that electrical devices in the United States use 120V AC power, while in the rest of the world use 220-250V AC power.

  • Batteries

  • As well as using the right size electronic devices and household appliances, it is also very important to use the right battery size. Batteries are able to sustain different draw currents without producing any damages. The maximum current draw for AGM (absorbent glass mat) batteries is 30% while for gel batteries is 25% and for flooded batteries is 10%. The runtime of an inverter is strongly related to the battery power of the device. In order to prolong its runtime, additional batteries should be added.

Our Verdict

There are so many models available on the market, that finding the best product is almost impossible unless you know what to look for. It should come as no surprise that we selected the KRIËGER KR1500 as the best product in the marketplace. It provides 1500 watts of continuous rate and 3000 watts of peak power. As compared to the ERAYAK 1000W, it features an LCD screen which displays the input and the output voltage. Plus, it provides more information about the battery level. The KRIËGER KR1500 is a lightweight inverter which comes with a pretty nice design. It measures 13.1 x 5.6 x 2.7 and weighs no more than 5 pounds. Although it comes with a lot of features, it doesn’t have a digital volt/watt meter like the Whistler XP3000i. The digital volt/watt meter is an interesting, useful feature which helps you monitor the power usage. What put it heads and shoulders above the rest is its price tag that is more than reasonable.

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