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EcoFlow Deals: When DELTA and RIVER Stations Actually Go On Sale

Updated 2026-09-29

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We don't track live prices, stock or sale status on this page. Check the current price at EcoFlow or on Amazon before buying, and judge it against the thresholds below. Size the station first: a discount on the wrong capacity is not a saving.

When EcoFlow actually discounts

WindowWhat to expect
Prime Day (July)A major sale window on Amazon and EcoFlow's own store
Member/flash sales (monthly)Frequent site flash events; shallow, but they compound with coupons
Black Friday / Cyber MondayThe other major window, often with expansion-battery bundles
New-model launchesOutgoing flagships are often discounted when a successor ships. Compare the spec sheets first

How deep is a real sale?

  • Under 20% off list: Routine promo: no urgency
  • 30% off list: A real sale. If the unit fits your sizing math, act
  • Bundle pricing (station + battery or panels): Usually beats the same parts bought in separate sales. Do the per-Wh math

The units worth watching

Size first, then shop the sale: a discount on the wrong class is still the wrong machine. Run the load math with the generator sizing calculator, then compare the full field in the power station picks.

Whole-circuit class

EcoFlow DELTA Pro 3

Check price on Amazon: EcoFlow DELTA Pro 3 (opens in a new tab)(paid link)

A 4 kWh, 4,000 W, 120/240 V unit that connects to a transfer switch and backs up circuits, not just devices, a fuel-free alternative to a standby generator once an electrician installs the transfer switch.

Best for: Backing up real circuits (furnace, well pump, kitchen) without fuel

Capacity
4,096 Wh LFP (expandable to 12 kWh/unit, 48 kWh system)
Cycle life
4,000 cycles to 80%
AC output
4,000 W at 120/240 V / 8,000 W surge
Outlets
7 AC incl. 30 A RV + L14-30 split-phase
Solar input
2,600 W max
Recharge (AC)
0-80% in 50 min (multi-input to 7,000 W)
UPS switchover
10 ms
Certification
UL 9540
Weight
113.5 lb (wheeled)
Warranty
5 years
  • Split-phase 240 V and an L14-30 outlet: it can feed a transfer switch like a generator, silently and indoors
  • Expandable to 12 kWh per unit; EcoFlow's Smart Home Panel integrates it as automatic whole-home backup
  • 2,600 W of solar input can genuinely recharge it in a day
  • 113 lb: wheeled, but this is an appliance, not a camping item
  • Feeding circuits still takes a transfer switch or EcoFlow's Smart Home Panel, installed by an electrician and usually under a permit
  • Standby-generator price territory. Compare it against that install honestly
Read the full write-up →

Entry class

EcoFlow RIVER 3 Plus

Check price on Amazon: EcoFlow RIVER 3 Plus (opens in a new tab)(paid link)

The sub-300 Wh entry point: 600 W inverter, sub-10 ms UPS switchover, ten pounds, and expandable when you outgrow it.

Best for: Desk UPS duty, camping, and finding out what you actually need

Capacity
286 Wh LiFePO4 (expandable to 858 Wh)
Cycle life
3,000 cycles to 80%
AC output
600 W continuous (X-Boost 1,200 W)
UPS switchover
<10 ms
Weight
10.4 lb
  • Sub-10 ms switchover: router, modem and a desktop ride through outages
  • Ten pounds goes anywhere; this is the one that actually leaves the house
  • Expansion battery path when 286 Wh stops being enough
  • 286 Wh runs a refrigerator for about 90 minutes: this is not an outage machine
  • X-Boost's 1,200 W is for resistive loads only; motors get 600 W
Read the full write-up →