AFERIY P280-B

Name: AFERIY P280-B Expansion Battery
Brand: Aferiy
Price: 599 USD
Availability: InStock

2,048 Wh of LiFePO4, for the P280 and P300. $599 at Aferiy (~~$799~~), checked Oct 14, 2026: $0.29 for each watt-hour it adds. With the 4 Aferiy allows, the P280 holds 10,240 Wh in all.

Adds

2,048Wh

Price

$599

Per Wh added

$0.29

Each watt-hour it adds costs less than the stations' own ($0.44 on the P280 and $0.35 on the P300), 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 P280-B on each station
Station	Most per station	With one	With the most	Station and one battery
Aferiy P2802,048 Wh on its own	4	4,096 Wh	10,240 Wh	$1,498
Aferiy P3002,048 Wh on its own	4	4,096 Wh	10,240 Wh	$1,318

Specs

AFERIY P280-B: Aferiy's figures
Capacity	2,048 Wh
Cells	LiFePO4
Weight	16.4 kg (36.2 lb)
Cable, in the maker's words	not named on the page

Where these figures come from

Aferiy product page: "Capacity: | 2048Wh |" · "Weight: | 16.4 kg |" · "Battery Type: | LiFePO₄ 40135 |"
On the P280: Aferiy's page, "The P280 has a base capacity of 2048Wh, expandable up to 10240Wh with 4 additional expansion batteries."
On the P300: Aferiy's page, "Yes. The P300 can connect to up to 4 additional expansion batteries through the parallel connection port, increasing total capacity from 2048Wh to 10240Wh."
Price and stock: Aferiy's US store, checked Oct 14, 2026.