Bluetti AC2A vs Westinghouse iGen400s

What is the difference?

The Bluetti AC2A has 300 W of power, 600 W peak, a 204.8 Wh battery. The Westinghouse iGen400s has 200 W of power, 400 W peak, a 183.6 Wh battery.

The Bluetti AC2A uses a LiFePO4 battery, the Westinghouse iGen400s a lithium-ion (NMC) one. LiFePO4 generally lasts more charge cycles, so the Bluetti AC2A should last longer.

The Bluetti AC2A weighs 8 lb, the Westinghouse iGen400s weighs 6 lb. The Westinghouse iGen400s is easier to carry.

The Bluetti AC2A has a 5-year warranty, the Westinghouse iGen400s has a 2-year warranty.

Specs side by side

	Bluetti AC2A	Westinghouse iGen400s
Capacity (Wh)	204.8	183.6
Continuous (W)	300	200
Peak (W)	600	400
Solar input (W)	200	—
Chemistry	LiFePO4	NMC
Cycles	3000	—
Expandable	—	—
Weight (lb)	8	6
Warranty (yr)	5	2
Fridge run time	3.9 h	3.5 h
CPAP run time	4.6 h	4.2 h
Wi-Fi router run time	13.5 h	12.1 h
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Specs as read from manufacturer pages on 2026-11-01 / 2026-10-27. Specs one maker does not list are left out of the comparison. Run times are for that appliance alone with a typical duty cycle, after inverter and depth-of-discharge losses. Sponsored links; we may earn a commission.

Common questions

Which has more capacity, Bluetti AC2A or Westinghouse iGen400s?

The Bluetti AC2A. More capacity: 204.8 Wh vs 183.6 Wh.

Which is lighter, Bluetti AC2A or Westinghouse iGen400s?

The Westinghouse iGen400s. Lighter: 6 lb vs 8 lb.

Which has the longer warranty, Bluetti AC2A or Westinghouse iGen400s?

The Bluetti AC2A. Longer warranty: 5 years vs 2 years.

More comparisons

Compare other models → · All Bluetti models · All Westinghouse models