Is the OSAK APR 4500W really 4500 watts?

No. Rated output is 800W continuous with 900W surge. The 4500W in the name is not the running power, so size your loads to about 800W.

What can 800 running watts power?

A fridge, lights, a TV, a laptop and phone chargers, or a small RV setup. It will not run a central AC, an electric range or a large well pump.

OSAK rates it at 58 dB in ECO mode, about the level of normal conversation. Expect more noise under heavy load.

How long does it run on a tank?

About 17 hours at 25% load and 8.5 hours at 50% load on the 2.3-gallon tank, per OSAK.

Does it come with a battery for electric start?

Yes. The electric-start battery is included in the box.

Is it safe for electronics?

Yes. The inverter produces a stable pure sine wave, which OSAK says suits TVs and medical devices.

What do buyers say about the OSAK APR 4500W Electric Start Inverter Generator?

Rated 1 out of 5 from 1 ratings.

Where can I buy the OSAK APR 4500W Electric Start Inverter Generator?

3 stores we checked sell it, including Walmart, Tractor Supply Company, The Home Depot.

OSAK APR 4500W Electric Start Inverter Generator

1

Best price now

$764.00at WalmartVerified

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Walmart

OSAK APR 4500W Electric Start Inverter Generator

1

Best price now

$764.00at WalmartVerified

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Our take on the OSAK APR 4500W Electric Start Inverter Generator

The OSAK APR 4500W is a portable gasoline inverter generator with electric start, a 212cc 4-stroke engine and a 2.3-gallon tank. Its inverter design gives a pure sine wave for sensitive electronics, and OSAK rates it at 58 dB in ECO mode. The headline 4500W figure is peak output; rated output is only 800W continuous with 900W surge, so check that against what you plan to run. At $459.99 at Tractor Supply Company as of November 5, 2026, it is the best new price among the 3 stores listing it.

Best forCamping and tailgatingSmall backup loads at homeRV trips needing a 30A outletBuyers who want electric start and wheels

Pros

Electric start with battery included
Pure sine wave output for TVs and medical devices
58 dB in ECO mode is quiet for a gas generator
17 hours at 25% load on a 2.3-gallon tank
30A RV outlet plus two 20A outlets and two USB ports
Foldable handle and 5-inch wheels for moving and storage

Cons

Only 800W continuous and 900W surge, far below the 4500W name
97 lb is heavy for a camping generator
No written warranty stated
Single fuel: gasoline only, no propane

OSAK APR 4500W Electric Start Inverter Generator prices at every store

Tractor Supply CompanyNew
In stock
$459.99+ $13.99 shippingObserved at 11:43 AM
Visit store
WalmartNew
In stockSold by SumdealReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$764.00+ $70.00 shippingVerified
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The Home DepotNew
In stock
$1,271.63Free shippingObserved at 11:33 AM
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Also available at

WalmartCheck price at Walmart

OSAK APR 4500W Electric Start Inverter Generator price history

Lowest price we've seen: $459.99 on Nov 5 at Tractor Supply Company. Tracked across 3 stores since Nov 5.

From Walmart

4500W inverter generator with electric start
Super quiet: 58 dB in ECO mode, comparable to normal conversation
Stable pure sine wave, suitable for sensitive electronics like TVs and medical devices
ECO mode run time of about 17 hours at 25% load and 8.5 hours at 50% load
Outlets: 1 × 120V 30A RV outlet, 2 × 120V 20A outlets, 2 × 5V DC USB outlets
Two 5-inch wheels and a foldable handle for mobility and storage

Returns: Free holiday returns until Jan 31; extended holiday returns
Shipping: Shipping only; arrives Nov 13; pickup not available; sold and shipped by Sumdeal
In the box: Battery (included for electric start)

About the OSAK APR 4500W Electric Start Inverter Generator

OSAK APR Inverter Generator,portable gas powerd generator for home use very good.Cause it is very light and quiet,you can take it out for using.Such as generator for campling,even generator in door.Never worry about losing of power. Super quiet Inverter Generator 4500w portable generator electric start, foldable handle with wheel,212cc 4 stroke EPA compliant Specifications: Type: Power Generator Engine:212 CC OHV Gas Engine (4-Stroke) Engine Run Time: 17 hours at 25% load & 8.5 hours at 50% load Rated Horsepower: 6.03 HP Power Type: Gas Volt/Frequency: 120V/60Hz Output:1 x 120V 30 amp RV outlet, 2 x 120V 20 amp outlets, 2 x 5V DC USB outlets Peak Power: 900-Watt Rated Power: 800-Watt Fuel Tank Capacity: 8.7 L (2.3 Gal.) Sound Level: 58 dB Starter Type: Electric start Certification: EPA Approved Product Dimensions Assembled Length (in.):23.20 Assembled Width (in.):17.30 Assembled Height (in.):20.00 Weight (lbs.):97.00

Specifications

Continuous wattage: 800 WSource
Fuel type: GasolineSource
Surge wattage: 900 WSource
Decibel rating: 58 dBSource
Outlets: 5Source
Brand: OSAK APRSource
Weight: 97 lbSource
Rec. use: ResidentialSource
Assembled product height: 20 inSource
Has written warranty: NoSource
Model: 4500WSource
Type: Portable
With Inverter: Yes
Power Source: Gasoline
Power Output: 900 watts
Capacity: 2.3 gal tank
Actual Color: White
color: White

Questions and answers

Is the OSAK APR 4500W really 4500 watts?: No. Rated output is 800W continuous with 900W surge. The 4500W in the name is not the running power, so size your loads to about 800W.
What can 800 running watts power?: A fridge, lights, a TV, a laptop and phone chargers, or a small RV setup. It will not run a central AC, an electric range or a large well pump.
How loud is it?: OSAK rates it at 58 dB in ECO mode, about the level of normal conversation. Expect more noise under heavy load.
How long does it run on a tank?: About 17 hours at 25% load and 8.5 hours at 50% load on the 2.3-gallon tank, per OSAK.
Does it come with a battery for electric start?: Yes. The electric-start battery is included in the box.
Is it safe for electronics?: Yes. The inverter produces a stable pure sine wave, which OSAK says suits TVs and medical devices.
Where is the OSAK APR 4500W Electric Start Inverter Generator cheapest?: At Walmart, for $764.00, as of our latest check.
What do buyers say about the OSAK APR 4500W Electric Start Inverter Generator?: Rated 1 out of 5 from 1 ratings.
Where can I buy the OSAK APR 4500W Electric Start Inverter Generator?: 3 stores we checked sell it, including Walmart, Tractor Supply Company, The Home Depot.