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FOSSiBOT F3600 + 420W Solar Panel, product photo

FOSSiBOT · solar generator kit

FOSSiBOT F3600 + 420W Solar Panel

Home backup class (3,000 Wh and up). #97 of 141 solar generator kits on Benchwatt by popularity on Amazon US.

Capacity

3,840 Wh

Output

3,600 W

Weight

49 lb

Wh per lb

78

Price and availability are on Amazon; we don't show or track prices.

FOSSIBOTHOME BACKUP3,840Wh3,600 WOUT78 Wh/lbLiFePO4+ 420 W panel

Published specs

BrandFOSSiBOT
ModelF3600
Battery capacity3,840 Wh
Rated AC output (continuous)3,600 W
Surge / peak output7,200 W
Battery chemistryLiFePO4
Weight49 lb
Bundled solar panel420 W
Expandable with extra batteriesYes
Amazon ASINB0HBBQN891
Specs checkedNovember 11, 2026

From the maker's listing. Specs not stated there are left out rather than guessed.

Our math

78 Wh per pound (3,840 Wh ÷ 49 lb). That is #1 of 123 solar generator kits on Benchwatt with a listed weight. Higher means more stored energy for each pound you carry.

At its full rated 3,600 W, a full charge lasts about 54 min.

Runtime estimates

Hours = 3,840 Wh × 0.85 ÷ device watts. Typical draws; check your own device's label.

Device Draw Runtime
Phone charging10 W326 h
Laptop60 W54 h
CPAP (no humidifier)40 W82 h
Mini fridge (average draw)60 W54 h
Full-size fridge (700 kWh/yr label)80 W41 h
TV100 W33 h
Space heater1,500 W2.2 h

Estimates, not measurements. Fridges cycle on and off, so their average draw is well under their rated watts; heaters and kettles run near full power.

Similar capacity

Other solar generator kits within ±35% of 3,840 Wh, most popular first.

FOSSiBOT F3600 + 420W Solar Panel

3,840 Wh / 3,600 W · LiFePO4. See the current price and seller on Amazon.

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