EcoFlow · Expansion battery
EcoFlow RIVER Extra Battery
Current model
EcoFlow RIVER Extra Battery: 288 Wh expansion battery. Check the required station and connection cable.
- Capacity
- 288 Wh
Selected configuration: Default Title
Exact model / SKU
EFMAXKIT-B-G · 31836419784777
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
Information still to verify
- A matched manual or download has not yet been verified for this market.
- No exact-model accessory connection has been verified in this market yet.
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Full Specs
Specifications apply to the stated market and configuration. Expanded-system figures require the named additional equipment.
- Capacity
- 288 Wh single batteryEcoFlow RIVER Extra Battery US exact specification
Overview & limitations
- Purpose
- A removable 288 Wh battery module for the original EcoFlow RIVER. The station plus this battery forms a 576 Wh RIVER MAX configuration.EcoFlow source ↗ · reviewed 2026-09-24
Battery
- Battery capacity
- 288 Wh; 28.8 VEcoFlow source ↗ · reviewed 2026-09-24
- Battery chemistry
- Lithium-ionEcoFlow source ↗ · reviewed 2026-09-24
- Cycle-life condition
- 500 cycles to at least 80% capacity, as stated on the manufacturer page.EcoFlow source ↗ · reviewed 2026-09-24
Dimensions & operation
- Charging temperature
- 0°C to 45°C (manufacturer tolerance ±3°C).EcoFlow source ↗ · reviewed 2026-09-24
- Dimensions
- 28.5 × 18 × 5.9 cmEcoFlow source ↗ · reviewed 2026-09-24
- Discharging temperature
- −20°C to 45°C (manufacturer tolerance ±3°C).EcoFlow source ↗ · reviewed 2026-09-24
- Weight
- 2.5 kgEcoFlow source ↗ · reviewed 2026-09-24
Included equipment
- Included equipment
- Extra battery, four long screws, screwdriver and user manual.EcoFlow source ↗ · reviewed 2026-09-24
Warranty & documentation
- Regional manufacturer warranty policy
- 24 months. 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
- Manufacturer warranty
- 24 months, subject to the applicable EcoFlow warranty terms.EcoFlow source ↗ · reviewed 2026-09-24
Questions about this product
FAQs
- Can this module power AC appliances by itself?
- No. It is an expansion module used with the original RIVER; the station provides the AC outlets.EcoFlow source ↗ · reviewed 2026-09-24