How Long Will A 6500 Watt Generator Run?

If you buy through the affililate links in this article, we may get a commission at no cost to you. As an Amazon Associate, we earn from qualifying purchases. Check out our editorial guidelines to learn more.

Photo of author
Published On

Knowing how long a 6500 watt generator will run can be helpful for purposes like planning refueling sessions. Discover a few numbers.

The first thing you want to know is that 6500 watt generators can vary a lot in terms of how long they can run from brand model to brand model.

At the same time, you can still say 6500 watt generators will often run around 14 hours at 25% load and around 11 hours at 50% load.

You can check out the rest of the article to get more precise numbers per brand model, see what 6500 watt generators stand out, and see the run times on 5 gallons of gas.

How long will a 6500 watt generator run on a tank of gas?

While knowing whether a 6500 watt generator can run what you need is important, having an idea of how long the machine can do this is relevant too.

That being said, you want to know that there is not really a general number for how long a 6500 watt generator can run on a tank of gas.

Instead, generator brands can make their machines with different specifications in this area.

To help you get an idea of what you can expect, I listed the 6500 watt generators in the table below together with their run times.

One thing to keep in mind when looking at this table is that you can’t really compare run times at different loads.

A run time at 50% load is not necessarily half as long as a run time at 25% load.

6500 Watt
Generator Name
Run Time
@25% Load
Run Time
@50% Load
Run Time
@Rated Load
Peak/Starting
Watts
Continuous
Watts
Predator 6500Not Mentioned14.5 HoursNot Mentioned6500 Watts5500 Watts
Honda EM6500SNot Mentioned9.8 Hours6.4 Hours6500 Watts5500 Watts
Briggs & Stratton Q650014 HoursNot MentionedNot Mentioned6500 Watts5000 Watts
Westinghouse WGen5300v14.5 HoursNot MentionedNot Mentioned6600 Watts5300 Watts
Westinghouse WGen5300DFvNot Mentioned11 Hours (Gasoline)Not Mentioned6500 Watts5300 Watts
Champion 5250/650013.5 HoursNot MentionedNot Mentioned6500 Watts5250 Watts
Pulsar G65BNNot Mentioned11.5 Hours (Gasoline)Not Mentioned6500 Watts5500 Watts
6500 watt generator run times on a full tank of gas

How long will a 6500 watt generator run on 5 gallons of gas?

It is also possible that you have a certain amount of gas in mind and want to know how long a 6500 watt generator can run with this.

In the table below, you can find how long 6500 watt generators would last while running at the different loads.

You can say 6500 watt generators can run around 15 hours at 25% load and around 11 hours at 50% load on 5 gallons of gas although individual models vary.

Again, the fuel usage per hour is not the perfect detail to compare generators with due to the different loads.

6500 Watt
Generator Name
Run Time
@25% Load
Run Time
@50% Load
Run Time
@Rated Load
Fuel Usage
Per Hour
Fuel
Tank Size
Predator 6500Not Mentioned9.30 HoursNot Mentioned0.54 Gallons
@50% Load
7.79 Gallons
Honda EM6500SNot Mentioned7.90 Hours5.2 Hours0.63 Gallons
@50% Load
6.2 Gallons
Briggs & Stratton Q650014.00 HoursNot MentionedNot Mentioned0.36 Gallons
@25% Load
5 Gallons
Westinghouse WGen5300v15.40 HoursNot MentionedNot Mentioned0.32 Gallons
@25% Load
4.7 Gallons
Westinghouse WGen5300DFvNot Mentioned11.7 Hours
(Gasoline)
Not Mentioned0.43 Gallons
@50% Load
4.7 Gallons
(Gasoline)
Champion 5250/650015.70 HoursNot MentionedNot Mentioned0.32 Gallons
@25% Load
4.3 Gallons
Pulsar G65BNNot Mentioned11.1 Hours
(Gasoline)
Not Mentioned0.45 Gallons
@50% Load
5.2 Gallons
(Gasoline)
Run times with 5 gallons fuel of 6500 watt generators
Photo of author

Author:

Mats is the founder and head editor of Generator Decision. With a combination of critical thinking, tireless research, and a healthy interest in electronics he helps people find the right generators and how to use these. At this point in the journey, Mats has done research on hundreds of portable generators.