Independent RV power guidance OEM RV Installation help
Heeler RV Electrical
← Back to previous page

EcoFlow · Expansion battery

EcoFlow DELTA Pro Ultra Series Smart Extra Battery

Current model

EcoFlow DELTA Pro Ultra Series Smart Extra Battery: 6,144 Wh expansion battery. Check the required station and connection cable.

Capacity
6,144 Wh
Works with
DELTA Pro Ultra (inverter + battery)
Sale 2,399 USD · Regular 3,299 USD

Selected configuration: DELTA Pro Ultra X Smart Extra Battery

Exact model / SKU

EFDELTAPROUXEB · 54732348719177

Check current USD price and availability at EcoFlow. Merchant checkout confirms the selected configuration.

Seller prices, financing, promotions, shipping and returns are set by the merchant. Manufacturer warranties follow the exact product and purchase terms.

Facts reviewed 2026-09-24

Heeler RV may earn a commission from qualifying purchases through marked seller links. As an Amazon Associate I earn from qualifying purchases.

Full Specs

Specifications apply to the stated market and configuration. Expanded-system figures require the named additional equipment.

Capacity
6,144 Wh single batteryEcoFlow DELTA Pro Ultra Series Smart Extra Battery US exact specification
Battery
Cycle-life test conditions
LFP; EcoFlow specifies at least 80% state of health after 3,500 cycles at 0.5C charge / 0.5C discharge and 25°C.Reviewed manual scope: Complete English DELTA Pro Ultra system manual; battery-specific sections appliedEcoFlow source ↗ · reviewed 2026-09-24
Charging
Cold-weather charging assumptions
Automatic charging heat operates below 0°C and needs at least 250 W charging input. Battery charging starts after internal temperature rises above 5°C; heating stops above 10°C.Reviewed manual scope: Complete English DELTA Pro Ultra system manual; battery-specific sections appliedEcoFlow source ↗ · reviewed 2026-09-24
Configurations & compatibility
Battery is not an AC power station
The 6,144 Wh battery operates with a DELTA Pro Ultra inverter. One inverter supports up to five battery modules. The battery alone does not provide the inverter’s 7,200 W AC outputs.Reviewed manual scope: Complete English DELTA Pro Ultra system manual; battery-specific sections appliedEcoFlow source ↗ · reviewed 2026-09-24
Dimensions & operation
Battery size and temperature
50.5 kg; 660 × 455 × 204 mm. Charge/discharge range −20–45°C, subject to internal temperature and self-heating conditions. IP54 is stated with protective covers closed/not in use; keep the unit dry in service.Reviewed manual scope: Complete English DELTA Pro Ultra system manual; battery-specific sections appliedEcoFlow source ↗ · reviewed 2026-09-24
Included equipment
Battery package
One DELTA Pro Ultra battery and one battery connection cable. The inverter, additional batteries and optional longer cable are separate unless explicitly included in the merchant’s selected bundle.Reviewed manual scope: Complete English DELTA Pro Ultra system manual; battery-specific sections appliedEcoFlow source ↗ · reviewed 2026-09-24
Warranty & documentation
Regional manufacturer warranty policy
5 years. Original-purchaser coverage starts at delivery, requires proof of purchase from EcoFlow or an authorized seller, and applies to purchase and use in the United States. Buyers outside the contiguous U.S. bear transport costs to and from the contiguous U.S. Normal wear is excluded. Check the linked policy for eligibility and exclusions.Exact regional policy match; Full official HTML; original-purchaser terms, regional service, registration and exact period row reviewed; preserve purchase-date eligibility and exclusions.EcoFlow source ↗ · reviewed 2026-09-24

Verified compatible accessories

Manuals & downloads