CrunchYourDollars

FOSSiBOT vs BLUETTI: Which Power Station to Buy

By Marcus Reed. Updated Oct 13, 2026. Picks come from published specs and our sizing math. Some links pay us a commission, and each one says so.

FOSSiBOT wins on price per watt-hour at every size. BLUETTI wins on solar input and a longer US track record. Both use LiFePO4 cells, pure sine wave inverters and a 10 ms UPS on the units compared here.

Our picks at a glance

From published specs and our sizing rules. Not lab tested.

At 1 kWh, the FOSSiBOT F1800 is $399 against $499 for the BLUETTI Elite 100 V2, same 1,024 Wh and 1,800 W. The BLUETTI takes twice the solar input (1,000 W vs 500 W) and has four AC outlets to FOSSiBOT's two. If you will charge from the wall, take the $100. If you will charge from solar, take the BLUETTI.

At 3+ kWh the gap is widest: the FOSSiBOT F3600 Pro gives 3,840 Wh for $1,199, about 63 hours of fridge, while the BLUETTI Elite 300 gives 3,014 Wh for the same price, about 49 hours. The FOSSiBOT weighs 92.6 lb.

Top picks, and why

Cheapest 1 kWh1
FOSSiBOT F1800

1,024Wh battery

FOSSiBOT F1800

  • 1.0 kWh
  • 1,800 W continuous

1,024 Wh, 1,800 W, 10 ms UPS, 24.8 lb for around $399 ($0.39/Wh). About 17 hours of fridge per charge. Buy it for outage backup charged from the wall.

  • About 17 hours of a full-size fridge per charge
  • 1,800 W inverter runs a coffee maker or microwave
  • 10 ms UPS switchover
  • Only two AC outlets, fewest of the 1 kWh class

About $399 at FOSSiBOT, checked Oct 12, 2026

Check price at FOSSiBOT

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Best 1 kWh for solar2
BLUETTI Elite 100 V2

1,024Wh battery

BLUETTI Elite 100 V2

  • 1.0 kWh
  • 1,800 W continuous

Same 1,024 Wh and 1,800 W with 3,600 W surge, 1,000 W of solar input and four AC outlets, 25.3 lb, around $499. Double the FOSSiBOT's solar input, so it refills in half the sun.

  • 1,000 W solar input, tied for highest of the 1 kWh class
  • 1,800 W inverter runs a coffee maker or microwave
  • 10 ms UPS switchover
  • Four AC outlets, fewer than the six-outlet 1 kWh units
  • Not split-phase, no 240V

About $499 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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Also on Amazon (paid link)
Most battery for the money3
FOSSiBOT F3600 Pro

3,840Wh battery

FOSSiBOT F3600 Pro

  • 3.8 kWh
  • expands to 12 kWh
  • 3,600 W continuous

3,840 Wh, 3,600 W continuous, 7,200 W surge and 2,000 W of solar for around $1,199 ($0.31/Wh). About 63 hours of fridge. Expands to 11,520 Wh. A 92.6 lb roll-around unit.

  • 3,840 Wh, about 2 days of fridge per charge
  • Expands to 11,520 Wh, about 6 days of fridge
  • 3,600 W inverter and 2,000 W solar input
  • Over 90 lb at 92.6 lb
  • Not split-phase, no 240V

About $1,199 at FOSSiBOT, checked Oct 12, 2026

Check price at FOSSiBOT

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Will it run your stuff?

Tick what you need to keep running. Every pick below re-sorts by how long it lasts on one charge.

Average draw about 104 W, peak about 1,251 W when the biggest motor starts.

Runtime = capacity x 0.85 inverter efficiency / average draw, with fridges and freezers cycling on their compressors. Amazon links are paid links. Amazon prices change, so we show a range.

1 kWh: F1800 vs Elite 100 V2 vs AC180

FOSSiBOT F1800: 1,024 Wh, 1,800 W (2,700 W surge), 2 AC outlets, 500 W solar, 10 ms UPS, 24.8 lb, $399. BLUETTI Elite 100 V2: 1,024 Wh, 1,800 W (3,600 W surge), 4 AC outlets, 1,000 W solar, 10 ms UPS, 25.3 lb, $499. BLUETTI AC180: 1,152 Wh, 1,800 W, 4 AC outlets, 500 W solar, 20 ms UPS, 35.3 lb, $499.

The F1800 is $100 cheaper for the same battery and inverter. You give up two AC outlets, half the solar input and surge headroom: 2,700 W surge is enough for a fridge or a small window AC, 3,600 W gives more margin for a microwave or a hard-starting compressor.

Only two outlets matters more than it sounds. A fridge, router and phone charger fills them with a power strip. With four outlets you skip the strip.

FOSSiBOT: $100 less1
FOSSiBOT F1800

1,024Wh battery

FOSSiBOT F1800

  • 1.0 kWh
  • 1,800 W continuous

$0.39 per Wh, the lowest in the 1 kWh class. Fine for a fridge, CPAP or router in an outage, charged from the wall.

  • About 17 hours of a full-size fridge per charge
  • 1,800 W inverter runs a coffee maker or microwave
  • 10 ms UPS switchover
  • Only two AC outlets, fewest of the 1 kWh class

About $399 at FOSSiBOT, checked Oct 12, 2026

Check price at FOSSiBOT

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BLUETTI: more solar and outlets2
BLUETTI Elite 100 V2

1,024Wh battery

BLUETTI Elite 100 V2

  • 1.0 kWh
  • 1,800 W continuous

1,000 W of solar input and 3,600 W surge in the same weight. The better pick for camping, RV use or charging from panels.

  • 1,000 W solar input, tied for highest of the 1 kWh class
  • 1,800 W inverter runs a coffee maker or microwave
  • 10 ms UPS switchover
  • Four AC outlets, fewer than the six-outlet 1 kWh units
  • Not split-phase, no 240V

About $499 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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Also on Amazon (paid link)
BLUETTI: more capacity3
BLUETTI AC180

1,152Wh battery

BLUETTI AC180

  • 1.2 kWh
  • 1,800 W continuous

1,152 Wh, about 19 hours of fridge, for $499. Heavier at 35.3 lb with a 20 ms UPS. Pick it only if the extra 128 Wh matters.

  • 1,152 Wh, most capacity of the 1 kWh class
  • About 19 hours of fridge or 3 CPAP nights
  • 1,800 W inverter runs a coffee maker or microwave
  • Heaviest of the 1 kWh class at 35.3 lb
  • Previous-generation model with 20 ms switchover

About $499 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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2 kWh: F2400 vs Elite 200 V2 vs AC200L

All three are about $899. FOSSiBOT F2400: 2,048 Wh, 2,400 W (4,800 W surge), 6 AC outlets, 500 W solar, 48.5 lb. BLUETTI Elite 200 V2: 2,074 Wh, 2,600 W (3,900 W surge), 4 AC outlets, 1,000 W solar, 53.4 lb, rated for 6,000 cycles. BLUETTI AC200L: 2,048 Wh expandable to 8,192 Wh, 2,400 W, 1,200 W solar, 62.4 lb, with a 30 A RV outlet.

At the same price, BLUETTI wins this size. The Elite 200 V2 has the bigger inverter and twice the solar input, and the AC200L is the only one you can expand. The F2400's edges are six outlets, 4,800 W surge and 5 lb less weight.

Each runs a typical fridge for about 33 to 34 hours per charge.

Best 2 kWh1
BLUETTI Elite 200 V2

2,074Wh battery

BLUETTI Elite 200 V2

  • 2.1 kWh
  • 2,600 W continuous

2,074 Wh, 2,600 W, 1,000 W solar, 10 ms UPS and 6,000 cycles for around $899. The strongest spec sheet at this price.

  • Rated for 6,000 cycles
  • 2,600 W inverter and 10 ms UPS switchover
  • About 34 hours of a full-size fridge per charge
  • Not expandable
  • Over 50 lb at 53.4 lb

About $899 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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Also on Amazon (paid link)
Expandable 2 kWh2
BLUETTI AC200L

2,048Wh battery

BLUETTI AC200L

  • 2.0 kWh
  • expands to 8 kWh
  • 2,400 W continuous

Grows to 8,192 Wh with B300K packs and has a 30 A RV outlet. Buy it if you might add battery later.

  • 30 A RV outlet for a camper
  • Expands to 8,192 Wh, about 4 days of fridge
  • 1,200 W solar input
  • Over 60 lb at 62.4 lb
  • Not split-phase, no 240V

About $899 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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Also on Amazon (paid link)
Most outlets and surge3
FOSSiBOT F2400

2,048Wh battery

FOSSiBOT F2400

  • 2.0 kWh
  • 2,400 W continuous

Six AC outlets and 4,800 W surge, 48.5 lb, around $899. Pick it for many small loads or hard-starting tools, not for solar.

  • Six AC outlets and a 2,400 W inverter
  • About 33 hours of a full-size fridge per charge
  • 10 ms UPS switchover
  • 500 W solar input, low for a 2 kWh unit
  • Not split-phase, no 240V

About $899 at FOSSiBOT, checked Oct 12, 2026

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3+ kWh: F3600 Pro vs Elite 300

Both are about $1,199. FOSSiBOT F3600 Pro: 3,840 Wh, 3,600 W (7,200 W surge), 2,000 W solar, 5 AC outlets, 10 ms UPS, expands to 11,520 Wh, 92.6 lb. BLUETTI Elite 300: 3,014 Wh, 2,400 W (4,800 W surge), 10 ms UPS.

The F3600 Pro gives 826 Wh more, a 50 percent bigger inverter and expansion for the same money. That is about 63 hours of fridge vs 49. Two caveats: in UPS mode the US version passes through up to 2,500 W, and it is heavy enough that it lives on its wheels.

The Elite 300 is the pick if you want BLUETTI's track record and support, or if the unit has to be lifted into a car.

More of everything1
FOSSiBOT F3600 Pro

3,840Wh battery

FOSSiBOT F3600 Pro

  • 3.8 kWh
  • expands to 12 kWh
  • 3,600 W continuous

3,840 Wh, 3,600 W, 2,000 W solar and expansion to 11,520 Wh for around $1,199, $0.31 per Wh.

  • 3,840 Wh, about 2 days of fridge per charge
  • Expands to 11,520 Wh, about 6 days of fridge
  • 3,600 W inverter and 2,000 W solar input
  • Over 90 lb at 92.6 lb
  • Not split-phase, no 240V

About $1,199 at FOSSiBOT, checked Oct 12, 2026

Check price at FOSSiBOT

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Bigger brand2
BLUETTI Elite 300

3,014Wh battery

BLUETTI Elite 300

  • 3.0 kWh
  • 2,400 W continuous

3,014 Wh and 2,400 W with a 10 ms UPS for around $1,199, $0.40 per Wh, the lowest from a big brand.

  • 3,014 Wh, about 49 hours of fridge
  • 2,400 W inverter runs a microwave or coffee maker
  • 10 ms UPS switchover
  • Not split-phase, no 240V

About $1,199 at BLUETTI, checked Oct 10, 2026

Check price at BLUETTI

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Also on Amazon (paid link)

Brand: what you trade for the lower price

FOSSiBOT is newer in the US than BLUETTI. FOSSiBOT lists its warranty as 2 years plus a 3-year extension. Compare the current warranty terms on both product pages before you order.

Neither brand's units here output 240V. A well pump, central AC or electric dryer needs a generator or a split-phase home battery.

The bottom line

From published specs and our sizing rules. Not lab tested.

Frequently asked questions

Is FOSSiBOT better than BLUETTI?

FOSSiBOT is cheaper per watt-hour at every size, and the F3600 Pro gives 826 Wh more than the BLUETTI Elite 300 for the same $1,199. BLUETTI has more solar input on its 1 kWh and 2 kWh units and a longer US track record.

Which is the cheapest 1 kWh power station, FOSSiBOT or BLUETTI?

The FOSSiBOT F1800 at around $399 for 1,024 Wh, about $100 less than the BLUETTI Elite 100 V2 with the same capacity and inverter. The BLUETTI has twice the solar input and four AC outlets instead of two.

How long will a FOSSiBOT or BLUETTI run a refrigerator?

About 17 hours for a 1 kWh unit, 33 to 34 hours for a 2 kWh unit, 49 hours for the BLUETTI Elite 300 and 63 hours for the FOSSiBOT F3600 Pro, for a typical fridge averaging about 52 W.

Do FOSSiBOT and BLUETTI use LiFePO4 batteries?

Yes. Every unit compared here uses LiFePO4 cells, which last thousands of cycles and are safer than older lithium-ion chemistries.

Which charges faster from solar, FOSSiBOT or BLUETTI?

BLUETTI at 1 kWh and 2 kWh, FOSSiBOT at 3+ kWh. Using battery Wh / (solar input x 0.75), the BLUETTI Elite 100 V2 (1,000 W) refills in about 1.4 hours of full sun against 2.7 hours for the FOSSiBOT F1800 (500 W). At 2 kWh the Elite 200 V2 takes about 2.8 hours and the F2400 about 5.5, while the F3600 Pro's 2,000 W input refills 3,840 Wh in about 2.6 hours.

Which is lighter, FOSSiBOT or BLUETTI?

FOSSiBOT, by a little at 1 kWh and more at 2 kWh. The F1800 is 24.8 lb against 25.3 lb for the Elite 100 V2 and 35.3 lb for the AC180. The F2400 is 48.5 lb against 53.4 lb for the Elite 200 V2 and 62.4 lb for the AC200L, and the F3600 Pro is a 92.6 lb roll-around unit.

How long will a FOSSiBOT or BLUETTI run a CPAP?

About 22 hours on a 1,024 Wh unit (F1800 or Elite 100 V2), 43 to 44 hours on a 2 kWh unit, 64 hours on the Elite 300 and 82 hours on the F3600 Pro. That is capacity x 0.85 divided by 40 W, a CPAP with the humidifier off. A heated humidifier raises the draw and cuts those hours.

Can FOSSiBOT or BLUETTI units be expanded with extra batteries?

Two of the units here expand. The FOSSiBOT F3600 Pro takes two FB3840 batteries for 11,520 Wh, and the BLUETTI AC200L grows to 8,192 Wh with B300K packs. The BLUETTI Elite 100 V2 and Elite 200 V2 do not expand.

Can a FOSSiBOT or BLUETTI run a well pump or central AC?

Not a 240V one. None of the units compared here outputs 240V, so a 240V well pump, central AC or electric dryer needs a split-phase home battery or a generator. A 120V load within the inverter rating, such as a fridge, furnace blower or window AC, is fine.

Can I use a FOSSiBOT or BLUETTI as a UPS for a computer or CPAP?

Yes, and the units with a 10 ms switchover give the most margin: the FOSSiBOT F1800, F2400 and F3600 Pro, and the BLUETTI Elite 100 V2, Elite 200 V2 and Elite 300. The BLUETTI AC180 and AC200L switch in 20 ms, which is fine for a CPAP or fridge but a thinner margin for a desktop PC. In UPS mode the US F3600 Pro passes through up to 2,500 W, below its 3,600 W rating.

11 products are linked on this page. We have not lab-tested these products; picks are based on published specifications and our sizing rules. Amazon prices change, so we show a range and link to the live price. See our disclosure.

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Marcus Reed

Founder and Editor, CrunchYourDollars

Marcus Reed builds the sizing tools on CrunchYourDollars. He is a software engineer with a long-running PC hardware and power supply habit, which is where the watts, watt-hours and surge math on this site comes from. Product specs are pulled from manufacturer data sheets, electricity rates from the U.S. Energy Information Administration, and water chemistry rules from the Water Quality Association. He is not a licensed electrician or plumber: the tools show the math and the matching models so you can make the call, and anything involving your electrical panel should be checked by a licensed pro.

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