Practical power for real-life needs
Expansion affects runtime rather than output. The P280 retains its 2800W inverter and connections, while each battery contributes another 2048Wh of storage.
Why this model stands out
Substantial capacity per module
The first battery takes the system to 4096Wh.
Build multi-day reserve
Four batteries deliver 10.24kWh with the P280.
Store more solar generation
Extra capacity captures more energy on productive days.
Centralised operation
Appliances remain connected to the P280.
What that means in everyday use
Home backup
Extend refrigeration, broadband and essential appliance runtime.
Motorhome use
Stay off-grid longer between hook-ups.
Workshop and solar
Store more energy for tools and equipment.
How to size an expansion battery
An expansion battery extends runtime but does not increase the main station’s output or add extra appliance sockets. Exact model compatibility is therefore the first check: a similar product name or connector is not enough, because the battery-management system must also be designed for the same station.
Then total the daily watt-hours used by your priority devices and rank them by importance. That shows whether one module is enough for refrigeration, broadband and lighting, or whether further batteries offer a meaningful multi-day reserve without adding unnecessary cost, weight and floor space.
A strong choice if…
you own a P280 and want a staged route from 2kWh to 4, 6, 8 or 10kWh.
Consider another model if…
you use another power station or need a universal standalone battery.
Real-world runtime examples
Approximate figures based on around 85% usable energy. Actual runtime depends on the appliance, efficiency and duty cycle.
What to check before you buy
P280 compatibility only. Plan for the space, weight and connection cables required by a multi-battery system.
Technical specifications
| Capacity | 2048Wh |
|---|---|
| Battery | LiFePO4 |
| Cycle life | More than 4000 cycles |
| Compatibility | AFERIY P280 only |
| Maximum number | 4 expansion batteries |
| Maximum system capacity | 10.24kWh |
| Display | Integrated LED status |
| Standalone use | Not designed as a separate power station |
Questions buyers often ask
Can it power an appliance directly?
Main appliances connect to the P280.
Will it fit a P210 or P310?
No, it is specific to the P280.
How does the system reach 10.24kWh?
2048Wh in the P280 plus four 2048Wh batteries.
Does it increase the 2800W output?
No, it extends runtime only.
