Convenient recharging DELTA 2 Max and its Extra Battery charge and discharge in unison. Whether you’re recharging DELTA 2 Max from solar panels, AC outlets, a vehicle, or our Smart Generator, the DELTA 2 Max Extra Battery will recharge alongside.
Independent in emergencies The extra battery even recharges directly from EcoFlow’s Smart Generator without DELTA 2 Max. That’s more recharging options to fit any situation.
LCD screen Get all the info on battery percent, time until full, time until empty, and more on the DELTA 2 Max Extra Battery LCD screen. Check the battery’s status anywhere on the EcoFlow app.
Specifications
Product Name
EcoFlow DELTA 2 Max
Capacity
Expandable from 2048Wh to 6144Wh
AC Input
US
X-Stream 1800W, 15A
Solar Input
1000W Max, 11V-60V, 15A ; 500W per port
AC Output (×6)
US
2400W (Surge 4800W), X-Boost 3400W
120V~ 50/60Hz
DC Output
2×USB-A / 2×USB-A Fast Charging / 2×USB-C (100W) / 1×Car Power Outlet / 2×DC5521
Significant Capacity Boost Adds 2,048 Wh of storage to the DELTA 2 Max system, allowing expansion from ~2 kWh up to ~4 kWh with one module, or ~6 kWh with two modules.
Durable LFP Battery Chemistry Lithium Iron Phosphate cells rated for ~3,000 cycles to 80% capacity, providing long-lasting and reliable performance.
High Input/Output Specs Supports rapid charging and robust discharge: Input up to ~2,000 W, Output up to ~3,200 W.
Plug-and-Play Integration Connects directly with the DELTA 2 Max (and compatible DELTA 2 or DELTA Max units) for seamless expansion without replacing the main unit.
Compact & Portable Dimensions approximately 18″ × 9″ × 11″, weighing ~19 kg (~42 lbs), offering high capacity in a manageable form.
Ideal Use Cases Extends runtime for key appliances during outages, supports longer off-grid sessions, and allows the main unit to handle heavier loads.
Q&A
Q: What is the EcoFlow DELTA 2 Max Smart Extra Battery? A: A high-capacity add-on battery designed to expand the runtime of the EcoFlow DELTA 2 Max portable power station, providing extended energy for appliances and electronics.
Q: What is the battery capacity? A: This Smart Extra Battery adds up to 2 kWh of additional energy, effectively doubling the DELTA 2 Max’s runtime when paired.
Q: What are the main benefits? A: Extended runtime, modular expandability, seamless integration, and safe battery management, perfect for emergencies, off-grid adventures, and long-duration power needs.
Q: Is it compatible with other EcoFlow devices? A: It is specifically designed for DELTA 2 Max units and integrates seamlessly for extended operation.
Q: Where is it best used? A: Ideal for home backup, RVs, camping, outdoor events, and emergency preparedness, providing reliable, portable energy wherever needed.
Maintenance Tips
Maintain Optimal Charge: Keep the battery charged between 20%–80% to maximize lifespan; avoid extended full discharges.
Store Correctly: Store in a cool, dry, and ventilated space (15°C–25°C / 59°F–77°F), away from heat, direct sunlight, or moisture.
Inspect Connections: Regularly check terminals and connectors for dust, debris, or looseness; clean gently with a soft, dry cloth.
Firmware Updates: Update battery firmware via the EcoFlow app to maintain peak performance and safety features.
Check Physical Condition: Look for swelling, leaks, or external damage; discontinue use if any issues are detected.
Safe Handling: Follow manufacturer instructions for connecting, transporting, and storing the battery to prevent short circuits or damage.
Environmental Care: Avoid extreme temperatures, water, and high humidity to preserve battery health and efficiency.
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