With its sleek and lightweight design, you can easily take it wherever you go. The DELTA Pro also features a smart charging system that automatically adjusts the output to match your charging device, ensuring optimal performance. Get the extra power you need with the EcoFlow DELTA Pro Smart Extra Battery.
Expandable capacity - This add-on battery connects with a DELTA Pro to double total capacity to 7200Wh. Connect two of them to a DELTA Pro for a staggering 10.8 kWh of battery storage.
Convenient recharging - Recharging from solar panels, AC outlets, EV charging stations, or our Smart Generator is easy. Plug the Extra Battery into a DELTA Pro and they will recharge and discharge in tandem.
More watt-hours at home - The Extra Battery can be integrated into your home’s wiring when connected to a DELTA Pro using the EcoFlow Smart Home Panel. These battery units become part of your home’s peak shaving and emergency power solutions.
Ready for emergencies - This Extra Battery can recharge directly from EcoFlow’s Smart Generator outdoors, giving you another option for emergencies.
LCD screen - Get all the same info about battery percent, remaining recharge time, hours left, and more on the built-in screen. You can check the battery’s status anywhere from the EcoFlow app.
*Note: This product is exclusively for the EcoFlow DELTA Pro portable power station.
Make it a triple - Double or triple the capacity of your DELTA Pro to 7.2kWh or 10.8kWh. That’ll give you days of power for your essential appliances.

Charge anytime, anywhere - DELTA Pro’s Smart Extra Battery benefits from all the charging methods DELTA Pro has, including 6500W MultiCharge. That means you can charge anytime, anywhere as long as your extra battery is connected to DELTA Pro. Once connected, they’ll charge/discharge in unison, keeping the battery percent level across both units.

Ready for any emergency - When the going gets tough and you’re out of charge options, get a 1800W DC fast charge with an EcoFlow Smart Generator (sold separately). Just plug the generator directly into your extra battery via the port on the back. This works even when disconnected from your DELTA Pro.

Stay informed - The Smart Extra Battery sports a bright LCD screen on the front of the unit giving you all the info you need. Output, input, remaining charge and time remaining. It’s all there. Need on the go info? The EcoFlow app can tell you all that & a whole lot more.

Key Features: EcoFlow DELTA Pro Smart Extra Battery
- Expandable capacity
- More watt-hours at home
- Ready for emergencies
- LCD screen
- Charge anytime, anywhere
- Capacity 3600Wh
- Made in USA
- Warranty 36+24 month (Registration for warranty extension)
Specifications: EcoFlow DELTA Pro Smart Extra Battery
Model Name | DELTA Pro Smart Extra Battery |
Capacity | 3600Wh |
Battery Chemistry | LFP |
Battery Cycle Life | 6,500 cycles to 50% capacity, 3,500 cycles to 80% capacity |
Shelf Life | 1 year (after a full charge) |
Dimensions | 25 x 11.2 x 16.4 inches |
Weight | Approx. 84lbs |
Document: EcoFlow DELTA Pro Smart Extra Battery
EcoFlow DELTA Pro Smart Extra Battery_V1.0 User Manual
Video: EcoFlow DELTA Pro Smart Extra Battery
FAQ
FAQ
How does the Power Hub communicate the voltage to the Smart Distribution panel?
There are two included RJ45 network cables included in a Independence Power Kit. One that connects the Power Hub directly to the Smart AC/DC Distribution Panel; a second one to connect the Power Hub to the Power Kit Console.
What is the operating temperature range of the Power Kit Console?
The information as stated in the user manual is below: -20C to 50C (-4F to 122F). This is the operating temperature range for all
Power Kit components.
What is considered a standard alternator input scenario and what is else is allowed involving alternator charging with EcoFlow Power Kits?
All 3x PV/ALT input ports can be used as alternator charging ports. The first ATL-IN input port can allow 70A max and 1600W input max, meaning that if you draw from 12V alternator you can only get 13.6V x 70A = 952W which is almost 1000 (it will fluctuate between 950W and 1000W). If a 48V alternator is connected to port 1, then an estimated 54V x 29.6A = 1600W is expected. The 2nd and 3rd ALT-IN input ports are both 30A max and 1600W max. If you connect a 12V alternator to these ports, an estimated 13.6V x 30A = 408W each is expected. If you connect a 48V alternator to ALT-IN 2 or 3 ports, an estimated 54V x 29.6A = 1600W each is expected. If you connect a 12V alternator on all 3 ALT-IN input ports, an estimated 952W + 408W + 408W = 1768W (if your 12V alternator can deliver 70A + 30A + 30A = 130A) is expected. If you use 48V alterantor on all 3 ports, an estimated 1600W + 1600W + 1600W = 4800W input is expected.
What type of shore power inlet is recommended for an EcoFlow Power Kit?
The Power Kit allows up to 30A input, so we recommend 30amps max. 30A to 15A converters are available if your enegy consumption needs are not high. Furrion is a tested and trusted brand that has worked perfectly with an EcoFlow Power Kit.
Manuals
Manuals
EcoFlow DELTA Pro Smart Extra Battery
FREE SHIPPING!
- Reviews
- Questions
Good price, prompt delivery.
The Delta Pro extra battery is something of a non-device in the sense that one does almost nothing to set it up. Once connected to the Delta Pro it is automatically used and managed by the Delta Pro. It is as if your Delta Pro has twice the battery storage with not much else changing. In short, it has worked well.
Excellent
Adds to my power output
Not Quite Satisfied
The unit prices were great, but I had to return some accessories that I bought by a mistake due to unclear info on the website. I asked to return them, and I have not yet received my credit back after a good month.