DELTA 2 Max Power Station Extra Battery, 2048Wh LiFePO4 (LFP) Battery, Compatible with DELTA 2&DELTA Max 2000&DELTA 2 Max Outdoor Generators

The EF ECOFLOW DELTA 2 Max Extra Battery is a useful expansion for increasing power capacity. The 2048Wh LiFePO4 battery provides a substantial boost, making it helpful for longer runtime during outdoor use, backup power, or extended projects. Connection to compatible units is straightforward, and the battery integrates seamlessly with supported models. The build quality feels durable and well-constructed, and the unit remains stable during operation. Despite the large capacity, the design is manageable and consistent with the main power station. Performance has been reliable, with steady output and no noticeable issues during use. The LiFePO4 chemistry is also reassuring for longevity. Overall, it’s a practical add-on for anyone looking to expand capacity and extend usage time.

Roc solid and a steady. No issues report based on occasional use.

This EcoFlow 2Max Extra Battery was delivered today and I am very pleased to say it so far functions very good and nothing was broken or damaged during the shipping and delivery process as before in a previous same purchase. I can confirm that the operation and functionality is exactly as described in the advertisement for this product and additional 2048 Watts to my solar generator system will definitely cover my electricity needs during this upcoming summer months and fire season when the main power supply grid is shutdown for public safety. I would recommend these devices be purchased for your homes in case of any future power outages because they are very efficient and and very easy to use and will save you money and discomfort during the upcoming months. Long story short, the EcoFlow company works with customers to help purchase their products by offering different types of payment plans that are compatible with many budgets so anyone can afford to pay for a important product that will help them during power outages that occur very frequently nowadays. Thank you (I’m pretty sure I will purchase one more extra battery so I can run my air conditioner when the heat is causing the power grid to be shut down and instead I will be enjoying my regular life without disruption and sweating in the heat waiting for the power company to turn back on the grid power supply to every house )

I’m extremely satisfied with this power station. It’s very powerful and can run multiple devices without any issues. The battery lasts a long time, and the charging speed is impressive. The build quality feels solid and durable, and the display is clear and easy to understand. I’ve used it for emergencies and outdoor activities, and it works perfectly every time. It’s also very convenient to have dif

Great device, literally plug n play. Wasn't exactly what I was expecting and didn't meet my requirements. Ecoflow was great with communication. Will definitely look at more of their products.

Update: now charging at 296 W. Much better.. originally charged it only 65 W so I contacted Eco flow. They claimed they would do an online update but after four weeks I had not seen it. Now some six months after giving up I plugged it in again to find it is now charging better. Perhaps the software update was done online. Still may take six hours to fully charge, but that’s much better than the 65 W charging speed it had before. Up to four stars on this review OLD REVIEW:Will only charge at 65 W… hooked up to my plugged in Eco flow Delta two unit. This unit charges at only 65 W taking over 24 hours to recharge with the combined unit plugged into a wall outlet. I contacted Eco flow and they said they would send a “firmware update” to the unit as it’s registered in the phone app. Well that’s been 2 1/2 weeks and nothing has happened. Until this is resolved, this is going to be a lousy unit too late to return it now I just plugged it in last week. Will probably discharge and add capacity but recharging this is ridiculously slow

This power station is hooked up to 800 watts of solar panels in series. Runs the power in a small household office and fully charges daily, with average sunshine. No more concerns over blackouts. Reliable, quiet, well built!

This works flawlessly and makes a great addition to my solar generator power supply, I plan to purchase another ASAP! I highly recommend Ecoflow my main unit sat unplugged and unneeded for 16 months I got it out to connect my extra battery it was still at 100 percent charge!