EcoFlow flash sale takes up to 62% off DELTA Pro/Ultra extra batteries and bundled solar panels starting from $399

62% off/From $399

EcoFlow has a 48-hour flash sale on four add-on accessory offers – two expansion battery discounts and two solar panel bundles – with up to 62% savings, so that you can upgrade your existing setup at much lower costs. One of the most popular options among the lineup will likely be the DELTA Pro Extra Battery for $1,450 shipped, which beats its Amazon pricing by $49. While this unit carries a $2,799 MSRP directly from the brand, we more often see it down at $1,999 at Amazon, with discounts over 2025 having mainly dropped costs between $1,499 and $1,599, the latter being the previous sale’s listing price. While we have seen it go as low as $1,299, which was last seen during July’s Prime Day sale, you’re still looking at a solid 48% markdown that cuts $549 off the going rate ($1,349 off the MSRP) for the third-lowest price we have tracked. Head below to learn more about what these extra batteries can do on top of browsing the other three offers.

If you already own one or more of EcoFlow’s DELTA Pro power stations and you want to get the most backup power support possible from them, you can take advantage of the savings here to bolster their capacity higher with this dedicated plug-and-play expansion battery. One unit adds an additional 3,600Wh to the station’s LiFePO4 battery capacity, which can go as high as 25kWh with further investments.

You can also get that same expansion opportunity for your DELTA Pro Ultra setup right now too, with the flash sale also offering two dedicated expansion batteries at $4,299 shipped, down from $6,598, which beats out Amazon where you’d have to buy two of them unbundled for $4,998. Adding these two batteries bumps your current battery capacity up by 6,144Wh per battery for a total of 12,288Wh, which can tackle any off-grid trips you take on top of home backup – and the expansion can climb all the way to 90kWh.

EcoFlow’s current 48-hour flash offers (ending 8/19):

• Two 160W Portable Solar Panels: $399 (Reg. $898)
• Two 220W Portable Solar Panels: $499 (Reg. $1,298)
• DELTA Pro Extra Battery: $1,450 (Reg. $2,799)
• Two DELTA Pro Ultra Extra Batteries: $4,299 (Reg. $6,598)

And speaking of add-on accessory deals, the brand is still offering ongoing bonus 15% discounts on bundled 220W and 400W solar panels (using the code provided in the coverage) through the rest of the month, though this flash sale gives you a bit more savings on the dual 220W panels above while it lasts. You can also check out the ongoing savings on other power stations and solar generators that we rounded together in our Electrified Weekly coverage here, as well as in our Green Deals hub too.

EcoFlow DELTA Pro Extra Battery features:

• Expandable capacity – Increase the capacity of DELTA Pro with an extra 3600Wh.
• Triple power at up to 30% lower cost – 3-10kWh expandable capacity to fit your energy storage needs. Add up to two DELTA Pro Extra Batteries to gain a capacity of 10.8kWh. And it’s up to 30% more affordable than a power station of the same capacity.
• 10-year lifespan with an LFP battery – Get 10 years of daily use until it hits 80% of its original capacity. Embrace the 3000+ charging cycles enabled by the LFP battery chemistry.
• Easy to use – Plug-and-play without setup. And use the EcoFlow app to monitor and control the DELTA Pro Extra Battery.
• 5-Year Full Warranty – With one of the most comprehensive warranties in the industry, we go the extra mile to give you peace of mind.