Best Overall
AFERIY
AFERIY 3840Wh Portable Power Station (Expandable to 11.5kWh)
$1,299.00
Reference price as of 2026-09-01 — check Amazon for the current price and stock.
The largest unit in this group and the only one that credibly stretches to multi-day backup once expanded. Price it against an installed whole-home battery if you are considering the full 11.5kWh configuration.
Full spec sheet
| Key specs | |
| Brand | AFERIY |
| Price | $1,299.00 |
| Capacity | 3,840 Wh |
| Continuous output | 3600 W |
| Peak / surge output | — |
| Weight | — |
| Battery chemistry | LiFePO4 |
| Dimensions (L x W x H) | — |
| Includes solar panel | No |
| Use cases | Home, Off-Grid |
| Other verified specs | |
| Expandable to | 11,520Wh |
| Charge time | ~1.5h to full |
| Ports | 15 total — AC, USB-A, USB-C PD 3.0, DC5521, XT60, 12V car |
| UPS switchover | Under 10ms |
| Recharge methods | AC, solar, car, AC+solar |
Pros
- 3,840Wh covers a fridge plus essentials for well over a day without recharging
- Expandable to 11,520Wh, which reaches genuine multi-day outage territory
- Full recharge in about 1.5 hours under supported input conditions
- 15 ports and app scheduling, with sub-10ms UPS switchover
Cons
- No solar panel included, and expansion packs add significantly to the total cost
- AFERIY's Amazon listing still advertises a 30% federal tax credit that ended on 31 December 2025 — that claim is out of date
- Peak surge rating is not published on the listing, so verify it against your largest motor load
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