








🔌 Power up your freedom—expand, endure, excel!
The EF ECOFLOW DELTA 2 Max Extra Battery adds a robust 2048Wh LiFePO4 capacity to your DELTA 2 Max system, enabling up to 6144Wh total power with two batteries. Engineered for longevity with 3000+ charge cycles, it guarantees 10 years of dependable energy for home backup, outdoor adventures, and everyday use. Compatible with multiple DELTA models, this expandable battery is your ultimate power upgrade.















































| ASIN | B0CPP81GNL |
| Additional Features | Expandable capacity |
| Best Sellers Rank | #3,425 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #12 in Outdoor Generators |
| Brand Name | EF ECOFLOW |
| Color | Black/Grey |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,907) |
| EU Spare Part Availability Duration | 10 Years |
| Engine Displacement | 79 Cubic Centimeters |
| Engine Type | 4 Stroke |
| Frequency | 50 Hz |
| Fuel Type | Electric |
| Ignition System Type | Electronic |
| Included Components | EcoFlow DELTA Max Extra Battery |
| Item Dimensions L x W x H | 11"L x 9"W x 18"H |
| Item Type Name | DELTA 2 Max Extra Battery |
| Item Weight | 42 Pounds |
| Manufacturer | EcoFlow |
| Model Name | DELTA 2 Max |
| Model Number | EFD350 |
| Output Wattage | 2048 |
| Power Source | Solar Powered |
| Recommended Uses For Product | Camping |
| Runtime | 601600 hours |
| Starting Wattage | 3400 Watts |
| Total Power Outlets | 6 |
| UPC | 842783131614 |
| Voltage | 120 Volts |
| Warranty Description | 1 year manufacturer |
| Wattage | 2048 Watt-hours |
R**S
Powerful and reliable portable power station
This EcoFlow portable power station works отлично and is very reliable. It charges fast and holds power for a long time, which makes it perfect for emergencies, camping, or everyday use. It’s easy to use, with multiple outlets that let me charge different devices at the same time. The build quality feels solid and durable. Overall, it’s a great investment and gives peace of mind knowing you have backup power when you need it. Highly recommended!
C**H
It's a great product, just not as an EPS (always connected Emergency Power Supply)
It's a great product for what it's designed to do: act as a nearly silent standby power source. It's powerful and well-built, but has too many features for it to be used as I intended. I purchased this mainly as an EPS backup for our sump pump. After using it for one day, I can say with a high level of certainty that it's not a good idea. 1) It does NOT act as a simple pass-through. While your grid power is ON, if anything goes wrong with the EcoFlow's configuration, or inverter failure, misc. electronic failure, etc., it will no longer pass the power through to your pump. Grid power ON + EcoFlow issues = flooded basement. 2) The unit has a manual power switch. Again, when the unit is powered off, power is not passed through. 3) The unit has an AC toggle switch (also in the app). If the AC is toggled OFF, power is not passed through. 4) There's a device timeout. If power isn't drawn during the timeout, then the EcoFlow will time out and not pass power through. It can be set to "Never Timeout". 5) There's an AC timeout. If AC power isn't drawn during the timeout, then the EcoFlow will time out and not pass power through. It can be set to "Never Timeout". 6) Firmware upgrades will cause the unit to revert to the default settings. There's a notice indicating this when you upgrade the firmware. This morning, I upgraded the firmware. After the upgrade, the AC was toggled OFF. OFF is the default. I recognized this within 30 minutes of the firmware upgrade (the sump pit was nearly full). I toggled the AC back ON, then the pump ran. What if they decide to push a firmware upgrade out automatically? I believe the timeouts were also reset to default, which is less than "Never Timeout". The question I asked myself was, "How reliable is our grid power?" My answer is about 99.999%. In 15 years, we've been without power for about 12 hours total. The final question is: how reliable is the EcoFlow? Given the five points above, it's certainly under 99.999%. I'm plugging the pump back into the wall.
A**T
Powerful, reliable, and easy to use
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
M**K
Good app
Nicely made, seems easy to use. App is excellent and allows unit to look up weather on the web, identify an approaching storm and change charging from slow to full rate in anticipation of storm and wanting to be fully charged. Claims that it can provide power draw on each of the four outlets individually but this has not been tested yet. No 240V outlet so still can’t power our well pump.
A**R
Well designed, works as advertised, useful app with VERY easy setup
I have had the Delta 3 Max for a couple of weeks now. Charging from both wall power and solar panels worked fine, and the XT60i cable signaled the unit for higher current and faster charging. If you use a plain XT60 (no i) cable, the unit will only charge at 12V and a max of 8 Amps. Both AC and DC output ports work. I am puzzled why the 12V car plug was on the back with the other inputs, but not a big deal. I have not yet tested the USB ports. Construction is solid and I really appreciate the carrying handles on each end, much better than a single handle. During wall charging at 1700W, the fan did turn on, pulling air in from the front and out the back, but it was very quiet. You can watch battery temperature in the app, and in this case (70 degree indoors), the battery temp hovered around 100 degrees while charging and dropped quickly when done. The buttons on the front panel sort of blend in, so they are hard to find in dim light, but you can feel around for them and activate them The display shows which input and output ports are in use and the charge and discharge rates with time remaining. The app paired VERY easily to my Android starting with Bluetooth and then transitioned to my WiFi to complete the setup. I heard that you do need Wifi to complete the installation, so do initial configuration before you go off-grid. The app is qood, but does take some exploring to figure out the features. There are two types of home screens...the 'filling battery' and the 'power in / power out'...see which one you like. The description of station operating modes was a bit confusing to me. You can program min and max battery charge levels, as well as max input charting current for both AC and DC. I can connect to my power station using the app when away from home, but I'm not sure what IP path the communication takes. I suspect that the station is communicating to Ecoflow HQ, and the app is pulling the data from the HQ internet portal. It didn't seem to have any issues with my firewall.
R**Z
Quality.
It is a good item, but it does not have a 220 volt outlet. Only comes with 120 outlet socket. I did not notice when I placed the order. I should go for the 3600WH. But I kept it any how because it is good brand, at list to power my furnace unit and other 120 volt devices.
J**L
Muy buen producto cumple lo que ofrece lo recomiendo ampliamente, justo para los apagones de energía que aveces son frecuentes.
A**A
Excelente invento. Lo recomiendo sobretodo cuando está alguien conectado a algún aparato por enfermedad y se va la luz.
L**G
I bought the ECOFLOW Portable Power Station DELTA 2 Max to use as a backup for my home and for camping trips. I was amazed by the large capacity, the fast dual charging, and the multiple output ports. It can power almost everything I need, from my fridge to my laptop. It is also very easy to use and monitor with the EcoFlow app. The power station is very user-friendly and convenient. It has a clear LCD screen that shows the input and output power, the battery level, and the remaining time. It also has an EcoFlow app that allows me to control and monitor the power station from my phone. The app is very easy to use and intuitive. It connects to the power station via Bluetooth or Wi-Fi and shows me real-time data and alerts. I can also update the firmware and access customer support through the app. The product came in a well-packaged box with all the accessories and manuals included. The packaging was sturdy and secure, and it protected the power station from any damage during shipping. The box also had a handle for easy lifting and moving. Overall, I am very happy with my purchase of the EcoFlow Delta Max. It is a powerful, reliable, and versatile portable power station that meets all my needs. It is worth the money.
T**N
I recently invested in the ECOFLOW Solar Generator Delta 2 Max along with the 220W Solar Panel, and the experience has been nothing short of extraordinary. Not only does the Delta 2 Max deliver on its promise of portable and reliable power, but the exceptional customer service provided by ECOFLOW added an extra layer of satisfaction to my purchase. Let's start with the product itself. The Delta 2 Max, with its impressive 2048Wh capacity, has become a reliable source of power for my various devices, appliances, and even during outdoor adventures. The inclusion of the 220W Solar Panel enhances the sustainability aspect, allowing me to harness solar energy for an eco-friendly power solution. The user-friendly design of the Delta 2 Max makes it easy to set up and operate. The multiple output options, including AC, DC, and USB ports, provide versatility for charging a wide range of devices. The informative LCD display keeps me informed about the battery status, input/output power, and remaining runtime, adding a level of convenience to my power management. What truly stood out, however, was the customer service provided by ECOFLOW. A week after my purchase, I received a thoughtful follow-up call from their team, inquiring about my satisfaction with the product and whether I had any questions or concerns. This proactive approach to customer care left a lasting impression, showcasing ECOFLOW's commitment to customer satisfaction beyond the point of sale. The peace of mind that comes with knowing there is a dedicated support team ready to assist with any queries or issues is invaluable. The encouragement to reach out if I ever encounter questions or require assistance demonstrates ECOFLOW's dedication to ensuring their customers have a seamless and positive experience with their products. In conclusion, the ECOFLOW Solar Generator Delta 2 Max, paired with the 220W Solar Panel, has proven to be a reliable and versatile power solution for various scenarios. The exceptional customer service experience further solidifies my confidence in ECOFLOW as a brand that prioritizes customer satisfaction. I wholeheartedly recommend the Delta 2 Max to anyone seeking a portable power station and applaud ECOFLOW for their outstanding commitment to customer care.
D**S
Stay away from EcoFlow! Bluetti is the one to buy! I have had nothing but issues with this company. They list part of my order, backordered the Solar Panel for almost a month even though it shows there is stock in Amazon, and now I’m stuck with an extra battery I purchased that I have no use for!
TrustPilot
2 周前
1天前