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Powerhorse 4500i - 3700/4500W Open Frame Inverter Generator

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Description

This Powerhorse Open Frame Inverter Generator delivers plenty of power, fuel efficiency and less than 2% distortion, making it perfect for operating computers, appliances, TVs and other sensitive electronics. It features a parallel-ready design for connecting two units together for up to twice the power.

Zoom on the Powerhorse 4500i

In a few words, the Powerhorse 4500i is a compact portable inverter generator perfectly suited for:

  • RV travellers who wish to upgrade their experience to another level
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Camping and tailgating buffs looking to enhance their experience

Over the following sections, you'll uncover its power characteristics, the selection of outlets it offers, its overall portability, and the supplementary features it includes.

Power & Run Time

The Powerhorse 4500i in use

The Powerhorse 4500i

Powerhorse 4500i runs on gasoline, powered by a 224 cc (7.5 hp) OHV 4-stroke engine, delivering 120/240V, boasting a running wattage of 3,700W alongside a starting wattage of 4,500W. Moreover, the parallel capability (parallel kit not included) allows for increasing of power output when paired with another similar or compatible unit, providing increased energy capacity and reliability for diverse needs.

The inverter generator features a conventional pull-start mechanism. It is rated for a noise of 64 dBA (just slightly more noisy than background music).

Thanks to a fuel capacity of 3.4 gallons, the 4500i can operate for up to 14 hours with a full tank (fuel consumption around 0.24 GPH).

The <2% Total Harmonic Distortion (THD) of the 4500i ensures a clean sine wave output, providing a secure power source for your sensitive electronics through its AC outlets.

Outlets

The control panel features the upcoming 4 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle

It also sports 3 DC outlets: there's a 12V 8A (cigarette lighter style) receptacle offering a convenient battery charging option and two 5V USB ports with which charging of electronics like mobile phones and tablets is made convenient.

Though it may not be labeled as 'RV Ready,' this Powerhorse generator offers the benefit of hassle-free RV connectivity through its L5-30R receptacle, allowing you to easily power your RV with the assistance of an L5-30P to TT-30R adaptor. Besides, as it features a twist-lock L14-30R receptacle, the 4500i is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.

Portability

With its L21 x W20.5 x H21.5 in dimensions, the open frame structure of the Powerhorse 4500i guarantees stability, simplified maintenance access to components, and better air cooling than enclosed units. The device has been designed for tough environments and demanding outdoor use.

With a dry weight of 90.4 lbs, the 4500i is convenient, ensuring it can be taken wherever power is needed. Moreover, the open frame design of the generator simplifies grabbing and relocating it.

Features

Panel of the Powerhorse 4500i

The 4500i's control panel

Light indicators on the device will notify you if the generator is on overload, the oil level is too low and the generator is ready.

In terms of security, the generator features an overload protection (circuit breaker) and an automatic low oil shut-off, ensuring peace of mind during its use.

Apart from the standard documentation and an owner's manual (opens in a new tab) to facilitate setup, the Powerhorse 4500i features extra accessories: tool kit and funnel.

Product Video

The Powerhorse 4500i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Powerhorse 4500i compare to inverter generators of similar power (between 3500 and 4500 W).

  • With a dry weight of 90.4 lbs, the Powerhorse 4500i falls within the expected weight range for inverter generators in the 3500 to 4500 rated wattage. If weight is your top priority, one of the champions in this power category is the Genmax GM4600iAEFIC, weighing just 58.4 pounds.
  • In comparison to generators with a similar running wattage, this inverter generator's lowest emitted noise of 64 dBA can be considered noisy. If you value reduced noise levels, the Westinghouse iGen4500DF could be worth considering. It's one of the quietest generators in its power range, rated at 52 dBA.
  • Concerning its runtime, the 4500i provides up to 14 hours at a 25% load, indicating that it falls on the lower side compared to other generators of its type and power range. If runtime is a priority for you, the Firman W03661OF stands out as one of the generators with the longest run time in its power range, providing up to 25 hours of continuous use.
  • While run time is vital, it hinges on the fuel capacity. To grasp the full picture, we must also factor in fuel efficiency. This inverter generator is somewhat less fuel-efficient than devices of comparable output: its estimated fuel consumption reaches 0.24 GPH at a 25% load. If gasoline efficiency is at the top of your list, you may want to have a look at the Champion 200988, which has great fuel efficiency, with a gas consumption of only 0.16 gallons per hour.

Price comparison

As you can see from these interactive charts, when compared to other 3500-4500W inverter generators, the Powerhorse 4500i is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • Several accessories included
  • Parallel capable
  • Inverter
AVERAGE SPECS:
  • Decent weight (90.4 lbs)
WEAKNESSES:
  • No data center
  • No electric start
  • On the noisy side (64 dBA)
  • Relatively low run time
  • Low fuel efficiency

Do you own the Powerhorse 4500i and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
Parallel capableYes, cable not included
RV readyNo
FuelGasoline
Engine224 cc OHV 4-stroke
Starting systemRecoil
Warranty2 years
Power
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts3,700 W
Starting watts4,500 W
Running amps (@120/240V)30.8/15.4 amps
Peak amps (@120/240V)37.5/18.8 amps
Run time @50% loadUnknown
Run time @25% load14 h
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
DC outlets1x 12V 8A (cigarette lighter style)
2x 5V USB port
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tank3.4 gal
Fuel gaugeNo
Misc
Weight90.4 lbs
Approx. dimensions (L x W x H)21 x 20.5 x 21.5 in
Noise (lower limit)64 dBA
THD< 2%
ComplianceCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
Country of originChina
Other model numbers83171

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

Spec Improvement×

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About Powerhorse

Powerhorse is a trademarked brand name of gas-powered outdoor products owned and distributed by the Northern Tool & Equipment Company Inc. through their store locations and online. Powerhorse outdoor products include gas- and electric-powered tools including pressure washers, wood chippers/shredders, log splitters, electric generators and inverters. The product line also offers engines and water pumps. The brand's motto is "Power You Can Depend On". Powerhorse generators are engineered, developed and tested in Minnesota, but manufactured in China or Vietnam.

Warranty Information

The Powerhorse 4500i is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Powerhorse generators, please contact the Powerhorse Customer Support: 1-866-443-2576.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator size calculator.
ItemRunning WattsStarting Watts
At homeMicrowave (1000 watts)15001500
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Desktop computer200200
Total2942 W4042 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Electric grill16501650
Radio100100
Total2940 W3530 W
For workGrinder14002500
Demolition hammer12601260
Electric fence (25 miles)250250
Total2910 W4010 W
have older power horse 4500i inverter amp @ 120/240 as generator with 120/240 switch. spec list 30.8/15.4. Is this a missprint or will the generator supply 30 amps plus thru the L5-30r plug? (Asked July 11, 2023)

The generator can deliver 3700 running watts (30.8A at 120V). The L5-30R plug can deliver up to 3600 running watts. To get the full 3700W (30.8A) at 120V, you'd have to use both L5-30R and 5-20R.

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Powerhorse 4500i
9 Total Score
1 review
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Price
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Value
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Quality
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User Reviews

  1. 4.5
    Price
    80
    Value
    90
    Quality
    90
    Performance
    100

    This generator will power anything you would need during a power outage..
    It will power most necessities for around 15 hrs.+ per tankful ..and is very
    quiet in case you have close neighbors.

    + PROS:
    • Very quiet
    • Long runtime
    • 120/240 for full house backup
    • Variety of outlet types
    - CONS:
    • No fuel gauge
    • No wheel/handle kit available
    Helpful(8) Unhelpful(0)You have already voted this

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