The fully enclosed housing is designed to keep noise down, but Genmax does not publish a decibel rating for this model. Expect normal inverter-generator conversation-level noise at close range.

Can it run a 240V appliance?

Only with the series and parallel connection box, which is sold separately. On its own it provides standard 120V output.

What can 3200 running watts power?

It handles a fridge, lights, router, phone chargers and a small window AC or space heater within limits. High-surge items like a well pump or large AC need more headroom.

Does it have electric start?

No electric start is listed; it uses a manual recoil pull start. The CO shutdown and LCD panel are the main convenience features.

Is it safe to run indoors?

No. It is a gasoline generator and must run outdoors, away from windows and doors. The CO detector is a backup safety shutdown, not permission to run it inside.

What is included in the box?

The generator itself with its manual and tool kit. The parallel connection box and any transfer switch are separate purchases.

GENMAX GM4000iSAPC Portable Inverter Generator

Best price now

$599.00at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

GENMAX GM4000iSAPC Portable Inverter Generator

Best price now

$599.00at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $599.00 at Walmart on Nov 9.

Our take on the GENMAX GM4000iSAPC Portable Inverter Generator

The Genmax GM4000iSAPC is a portable inverter generator with a 145cc 4-stroke OHV engine rated at 4000 peak watts and 3200 running watts. It weighs 56.8 lbs in a fully enclosed housing, which keeps noise down and makes it carryable by one person. An LCD panel shows runtime, voltage and load, and a built-in CO detector shuts the unit down automatically. It suits campers and home-backup users who want clean power for electronics; against rival inverter units it is lighter than many 3200-watt-class models but needs a separately sold parallel box for 240V output.

Best forCamping and tailgating powerHome backup for essentialsRV and small-jobsite useRunning sensitive electronics

Pros

Clean inverter power for laptops and electronics
Light at 56.8 lbs for its wattage class
Fully enclosed design keeps noise down
LCD shows runtime, voltage and load
Built-in CO shutdown for safety
EPA and CARB certified with 3-year warranty

Cons

Parallel connection box for 240V sold separately
3200 running watts limits large appliances
No electric start listed
Single fuel type: gasoline only

GENMAX GM4000iSAPC Portable Inverter Generator prices at every store

WalmartNew
In stockSold by ProGen Outdoor PowerReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$599.00Free shippingChecked Nov 9
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About the GENMAX GM4000iSAPC Portable Inverter Generator

The GENMAX GM4000iSAPC is a portable inverter generator with a 145cc 4-stroke OHV engine. It produces 4000 peak watts and 3200 running watts of clean, stable power.

It has a compact, fully enclosed design for quiet operation and weighs 56.8 lbs. An LCD control panel tracks runtime, voltage and load level. A built-in CO detection system shuts the generator down automatically for safety.

Two units can be connected in series and parallel for 240V power output. The connection box is sold separately. The generator is EPA and CARB certified.

Engine: 145cc 4-stroke OHV
Peak power: 4000 watts
Running power: 3200 watts
Weight: 56.8 lbs
Display: LCD showing runtime, voltage and load level
Safety: Built-in CO detection with automatic shutdown
Parallel use: Series and parallel connection for 240V output; connection box sold separately
Certifications: EPA and CARB
Warranty: 3 years, with lifetime free technical support
Color: Orange

Specifications

color: OrangeSource

Questions and answers

How loud is it?: The fully enclosed housing is designed to keep noise down, but Genmax does not publish a decibel rating for this model. Expect normal inverter-generator conversation-level noise at close range.
Can it run a 240V appliance?: Only with the series and parallel connection box, which is sold separately. On its own it provides standard 120V output.
What can 3200 running watts power?: It handles a fridge, lights, router, phone chargers and a small window AC or space heater within limits. High-surge items like a well pump or large AC need more headroom.
Does it have electric start?: No electric start is listed; it uses a manual recoil pull start. The CO shutdown and LCD panel are the main convenience features.
Is it safe to run indoors?: No. It is a gasoline generator and must run outdoors, away from windows and doors. The CO detector is a backup safety shutdown, not permission to run it inside.
What is included in the box?: The generator itself with its manual and tool kit. The parallel connection box and any transfer switch are separate purchases.
Where is the GENMAX GM4000iSAPC Portable Inverter Generator cheapest?: At Walmart, for $599.00, as of our latest check.