AFERIY P310-B

Name: AFERIY P310-B Expansion Battery
Brand: Aferiy
Price: 1099 USD
Availability: InStock

3,840 Wh of LiFePO4, for the P310. $1,099 at Aferiy (~~$1,199~~), checked Oct 14, 2026: $0.29 for each watt-hour it adds. With the 2 Aferiy allows, the P310 holds 11,520 Wh in all.

Adds

3,840Wh

Price

$1,099

Per Wh added

$0.29

Each watt-hour it adds costs less than the P310's own ($0.35 on the P310), so it is the cheaper way to more stored energy than a second station, which adds outlets and output instead.

From Aferiy's published figures and our own arithmetic; we have not tested it ourselves.

See it at Aferiy Extra batteries for every station

Which stations take it

The most one station takes is Aferiy's figure; a dash where its page gives none. Prices are both makers' prices added up, before cables.

AFERIY P310-B on each station
Station	Most per station	With one	With the most	Station and one battery
Aferiy P3103,840 Wh on its own	2	7,680 Wh	11,520 Wh	$2,428

Specs

AFERIY P310-B: Aferiy's figures
Capacity	3,840 Wh
Cells	LiFePO4
Weight	36.5 kg (80.5 lb)
Cable, in the maker's words	"The package contains an AFERIY P310-B Expansion Battery, Parallel Cable, MC4-XT90 cable, User manual, and Warranty card."

Where these figures come from

Aferiy product page: "Nominal Battery Capacity: | 3840Wh |" · "Product Weight: | 36.5 kg |" · "Battery Type: | 40135 LiFePO₄ |"
On the P310: Aferiy's page, "Each P310 supports up to two expansion batteries."
Price and stock: Aferiy's US store, checked Oct 14, 2026.