The original EcoFlow DELTA Pro extra battery bundle pairs a DELTA Pro with a compatible expansion battery. It adds stored energy for longer use; it does not make a portable unit an automatically connected whole-home backup system.
What is included in the capacity figure?
The original DELTA Pro has 3.6kWh nominal capacity. One matching 3.6kWh expansion battery gives 7.2kWh combined nominal storage. Distinguish this bundle from configurations with two expansion batteries or newer DELTA Pro generations.
Will it double output power?
No. Adding storage increases energy capacity, while the main unit and the approved configuration determine output. Check appliance startup demand and simultaneous loads. A nominal capacity total does not describe usable energy after losses.
Charging and household use
Confirm which mains, solar and accessory charging arrangements are approved for the UK model. Do not transfer claims about overseas Smart Home Panel or multiple-unit configurations to a UK installation without an appropriate design.
For existing equipment, our DELTA Pro expansion checklist explains what to verify.
Check the exact model before ordering
Use the EcoFlow UK manual library for the product generation, UK electrical specification and approved accessories. Confirm availability, included cables and warranty with the supplier.
For a permanently installed household system, see our home battery storage service. Contact Renew-Able Solutions to discuss your intended loads and whether portable or installed storage is appropriate.
Earlier product guide reviewed 27 September 2026. This page is not a current stock or price offer.
