Name: FOSSiBOT F3600 Pro
Brand: FOSSiBOT

A large home-backup station for buyers who want lots of capacity and solar input at a low price per watt-hour, and don’t need to move it often.

Price checked October 20, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Cons

How it scores

The rating comes from 8 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Battery
Rated capacity	3,840 Wh
Chemistry	LiFePO4
Cycle life	6,500 to 80% per product description and Amazon; US spec table says to 50%
Expandable	Yes, up to 11,520 Wh
Output
AC output	3,600 W (7,200 W surge)
AC outlets	5 total
120V 20A outlets (NEMA 5-20R)	4
RV 30A outlet (TT-30R)	1
AC waveform	Pure sine wave
USB-C ports	4 (up to 100 W each)
USB-A ports	2
12 V car outlet	Yes
DC5521 ports	2
UPS / pass-through	Yes (10 ms switchover)
Charging
AC charging	1,500 W
Full AC charge time	3 h (Manufacturer: about 3 hours on AC; 1 h 50 min with AC + solar (3500W))
Max solar input	2,000 W
Solar input voltage	12-160V, 20A
Car charging	120 W
Build
Weight	92.6 lb (42 kg)
Dimensions	24.0 x 12.6 x 18.7 in
App	FOSSiBOT app
Warranty	5 years

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