10 Best Quiet Portable Generators 2025 in the United States

The EcoFlow DELTA 3 is a solid choice if you're looking for a quiet and portable power station that can support various activities like camping, RV trips, or home backup. It offers a very fast recharge time—fully charging in under an hour—and can power up to 13 devices at once, handling a peak power output of 2200W with its X-Boost feature. This makes it strong enough for many household appliances and tools. Its LiFePO4 battery technology ensures a long lifespan of around 10 years and thousands of charge cycles, which is better than typical portable power stations. Noise-wise, it stays relatively quiet under moderate loads (below 600W), which fits the 'quiet generator' need well.

Portability is decent, with a weight of about 12.5 kg (27.5 lbs), making it manageable for most users, though not ultra-lightweight for backpacking. It runs on electricity and supports solar input, giving you flexible and eco-friendly charging options, although you’d need to buy the solar panel separately. One downside is that the runtime depends heavily on how many devices and how much power you draw; with a 1024Wh battery, heavy use means shorter run times. Also, the unit’s size isn’t the smallest in the category, so if compactness is a top priority, there might be lighter alternatives. For those wanting a robust, quiet, and fast-charging generator with expandable battery capacity, the DELTA 3 is a trustworthy option.

The EF ECOFLOW DELTA 2 is a solid choice if you're looking for a quiet and portable power solution for camping, RV trips, or home backup. It offers a powerful 1800W output, which can handle most appliances you’d use outdoors, while its inverter technology ensures clean and stable power – great for sensitive electronics. Unlike traditional gas generators, it runs electrically using a lithium iron phosphate (LiFePO4) battery, making it quiet and eco-friendly with no fumes. Its battery capacity is 1024Wh, which means it can power devices for several hours depending on usage, and you can add extra batteries to boost capacity up to 3kWh for longer runtimes.

Charging is impressively fast, reaching full charge from a wall outlet in about 80 minutes, and it supports solar panel input for green, off-grid use. Weighing 27 pounds, it's reasonably portable but a bit heavy compared to smaller models, so it's best if you have a way to carry it comfortably. One thing to keep in mind is that it’s a bit pricey, but it comes with a 5-year warranty and a durable battery expected to last thousands of cycles—meaning it’s built for long-term use.

This generator is well suited for users who prioritize quiet, clean power and versatility over the loudness and fuel mess of gas models, especially for use in outdoor or backup scenarios.

The EcoFlow DELTA 3 Classic is a compact and portable power station designed for those needing reliable electricity on the go or during power outages. It delivers a strong 1800W continuous output (3600W surge), which is enough to run common household appliances like refrigerators and microwaves, making it a versatile choice for camping, RV trips, or home backup. One of its standout features is ultra-fast charging—it can reach 80% charge in just 45 minutes, which is much quicker than many other portable units. The included LiFePO4 battery offers long lifespan and safety, designed for daily use over many years. It also supports solar charging, which is great for extended outdoor use without access to regular electricity.

The built-in inverter technology ensures stable, clean power suitable for sensitive electronics like laptops and medical devices, with nearly instant switching to battery power to avoid interruptions. At about 27 pounds and a size that’s easy enough to carry, it strikes a good balance of portability and power. However, unlike traditional gas generators, it relies on battery power, so it might not run indefinitely without recharging or solar input. Noise level isn’t explicitly stated, but being a battery-powered unit, it’s much quieter than gas generators, making it ideal for quiet environments. The price and need for solar panels or AC power to recharge may be considerations depending on your budget and usage needs.

This power station is a strong option for those seeking a quieter, eco-friendly, and fast-charging portable power source capable of handling a variety of devices with less fuss.