Dabbsson DBS2100 Pro vs FOSSiBOT F2400: Which to Buy

The FOSSiBOT F2400 is the better portable power station overall, rated 4.2 to 4.1. The FOSSiBOT F2400 leads on value, tested capacity and portability. The Dabbsson DBS2100 Pro wins on solar input and features. The FOSSiBOT F2400 costs $220 less ($579 vs $799).

Higher rated

FOSSiBOT F2400

#6 in Large4.2Full review

A low-cost 2kWh station for home backup and RV use when price per watt-hour matters more than charging speed.

Amazon $579 FOSSiBOT $609

$579

Dabbsson DBS2100 Pro

#11 in Large4.1Full review

For home-backup and RV buyers who want 2 kWh, high output and room to add batteries at a low price per watt-hour. Expect average efficiency at heavy loads.

Amazon $799 Dabbsson $799

$799

Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Choose the FOSSiBOT F2400 for value ($0.28 per rated Wh vs $0.37 per rated Wh), tested capacity (84% of rated capacity delivered (2 tests) vs 82% of rated capacity delivered (1 test)) and portability (93 Wh per kg (48.5 lb (22 kg)) vs 88 Wh per kg (54 lb (24.5 kg))).
Choose the Dabbsson DBS2100 Pro for solar input (1,200 W max solar input vs 500 W max solar input) and features (UPS (15 ms), expandable, 100 W USB-C, app vs UPS (8 ms), 100 W USB-C, app).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every large portable power station; a clear win is highlighted. How we rank explains each one.

Factor weight	FOSSiBOT F2400	Dabbsson DBS2100 Pro
Overall rating	4.2/5	4.1/5
Value 25%	100 $0.28 per rated Wh	89 $0.37 per rated Wh
Tested capacity 15%	64 84% of rated capacity delivered (2 tests)	55 82% of rated capacity delivered (1 test)
Battery life 15%	100 LiFePO4, 4,000 cycles, 5-year warranty	100 Semi-solid-state LiFePO4, 4,500 cycles, 5-year warranty
AC output 15%	54 2,400 W continuous AC	54 2,400 W continuous AC
Charging speed 10%	63 0-100% on AC in 2 h	50 full AC charge time not published (neutral score used)
Portability 10%	87 93 Wh per kg (48.5 lb (22 kg))	78 88 Wh per kg (54 lb (24.5 kg))
Solar input 5%	11 500 W max solar input	48 1,200 W max solar input
Features 5%	75 UPS (8 ms), 100 W USB-C, app	100 UPS (15 ms), expandable, 100 W USB-C, app

Independent capacity tests

FOSSiBOT F2400

Tested by	Usable AC energy	Of rated	Conditions
techtest.org	1,781 Wh	87%	European 230V model, AC outlets at a 1,200W load (from the review’s capacity chart). Other AC runs: 1,717 Wh at 2,000W and 1,512 Wh at 100W. Full AC recharge took about 2 h 45 min at the 1,100W setting.
nextpit	1,659 Wh	81%	Full discharge of the European 230V model (load not stated); 2,127 Wh from the wall to recharge, about 78% round trip.