Ecoflow DELTA 3 Plus + DELTA 3 Extra Battery
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Visit CalculatorStay powered anywhere, anytime with the EcoFlow DELTA 3 Plus + Extra Battery bundle. Designed for reliable, expandable energy storage, this duo offers a massive combined capacity to support everything from off-grid adventures to home backup. With lightning-fast charging, high output, and smart controls via the EcoFlow app, this system is made for people who want flexible, plug-and-play power—on the road or at home.

Massive Expandable Power – Combine the DELTA 3 Plus with the Extra Battery for up to 6kWh of energy storage, perfect for powering your home or off-grid cabin through extended outages or remote adventures.
High Output Performance – With a 2400W AC output (4800W surge), you can run high-demand appliances like fridges, air conditioners, power tools, or even electric grills with ease.
Ultra-Fast Recharging – Recharge from 0–80% in just 50 minutes using AC input. Pair with solar for hybrid charging to stay powered even in remote locations.
Plug-and-Play Expansion – The Extra Battery connects directly to the DELTA 3 Plus with no configuration required—just plug it in and go.
Smart Energy Monitoring – Control output, input, and battery status in real-time with the EcoFlow app via Wi-Fi or Bluetooth.
Portable & Stackable Design – Designed for mobility and compact storage. Stack the battery and main unit to save space in RVs, home setups, or solar sheds.


Everything you need is included with your product.
| Specification | Details |
| Dimensions | 97.6 x 202 x 283.6mm | 15.7 x 8.0 x 11.2in |
| Net Weight | 12.5kg | 27.6 lbs |
| Capacity | 1024 Wh |
| Extra Battery | The DELTA 3 Plus supports: EcoFlow DELTA 3 Smart Extra Battery (1kW) | EcoFlow DELTA 2 Smart Extra Battery (2kWh) | EcoFlow DELTA Max Smart Extra Battery (2kWh) | EcoFlow DELTA 2 Max Smart Extra Battery (2kW) | EcoFlow DELTA Pro 3 Smart Extra Battery (4kWh) |
| Total Output Ports | 13 |
| AC Output | 6 outlets, 1800W total (Surge 3600W) |
| Max Device(s) Power (with X-Boost) | 2200W |
| USB-A Output (Fast Charge) | 2 ports, 36W Max |
| USB-C Output | 2 ports, 140W Max |
| Car Power Output | 1 port, 12.6V, 10A, 126W Max |
| DC5521 Output | 2 ports, 12.6V, 3A Max |
| AC Charging | 1500W |
| Solar Charging | 2 ports, DC Charge Input, 11V-60V 500W Max |
| Smart Generator Charging (1.8kW) | 1500W |
| Car Charging | 800W in 1.3 Hours |
| Battery Chemistry | LFP (LiFePO4 battery) |
| Cycle Life | 4000 cycles to 80+% capacity |
| Connectivity | APP (TOU / Storm Warning Alert) |
| Waterproof Level of Battery Pack | IP65 |
| UPS | <10ms |
| Noise | 600W<30db | 1200W<40db |
| Warranty | 5 years |
| Category | Specifications |
| Weight | 9.6 kg | 21.2 lb |
| Dimensions (W x D x H) | 397.6 × 202 × 198 mm | 15.7 × 8.0 × 7.8 in |
| Extra Battery Port | 40V-58.4V⎓48A Max |
| Extra Battery Port | 40V-58.4V⎓24A Max |
| Rated Capacity | 1024Wh (51.2V⎓20Ah) |
| Cell Chemistry | LFP (LiFePO₄) |
| Cycle Life | 80%+ capacity after 4000 cycles |
| Protection Type | Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection |
| Optimal Operating Temperature | 20°C-30°C (68°F-86°F) |
| Charge Temperature | 0°C-45°C (32°F-113°F) |
| Discharge Temperature | −10°C to 45°C (14°F-113°F) |
| Storage Temperature | −10°C to 45°C (14°F-113°F) |

How do I connect the DELTA 3 Extra Battery to the main unit?
Simply use the included battery connection cable to link the extra battery to the DELTA 3 Plus. It auto-recognizes and balances the charge across both units.
Can I charge the DELTA 3 Plus with solar panels?
Yes! It supports up to 1600W solar input, compatible with most standard solar panels using MC4 connectors.
Does the DELTA 3 Plus support pass-through charging?
Yes. You can use connected devices while the unit is charging, making it ideal for uninterrupted power delivery.
Can I monitor usage and control the system remotely?
Absolutely. The EcoFlow app lets you track input/output, manage battery settings, and even perform firmware updates over Wi-Fi or Bluetooth.
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We offer market leading Easy 30 Day Returns. Read more about our Returns Policy here.
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