Add Extra Capacity: Adds 1024 Wh of extra battery capacity to your DELTA 2 system, effectively doubling total energy storage to ~2048 Wh for extended runtime.
Durable LFP Battery Chemistry: Built with long-lasting LiFePO₄ cells that maintain 80 %+ capacity after ~3000 cycles, giving an estimated ~10 years of daily use.
Smart Battery Integration: Works seamlessly with the DELTA 2 — the main unit and extra battery charge and discharge in unison for balanced performance.
Fast Recharge: When connected to DELTA 2, can recharge from 0 % to 80 % in about 80 minutes and to 100 % in ~130 minutes (AC input), keeping downtime low.
Multiple Power Inputs (via DELTA 2): Recharge using AC outlets, solar panels, or compatible generators, making it versatile for off-grid and home backup setups.
EcoFlow App Support: View real-time battery status, remaining runtime, charge/discharge data, and more from your smartphone using the EcoFlow app.
LCD Display Info: On-device display shows key metrics like percentage, input/output power, and estimated hours left (varies by retailer model).
Plug-and-Play: No special setup — simply connect to the DELTA 2 power station to expand capacity.
Stackable & Compact: Ergonomic design allows for stacking on top of the DELTA 2 or other units to save space and reduce clutter.
Built-in Battery Management System (BMS) protects against over-voltage, over-current, over-temperature, short circuits, and other electrical risks.
Home Backup Power: Keeps essentials running longer during outages.
Camping & Outdoor Use: Extends run time for off-grid adventures.
Travel & Mobile Deployments: Works well with solar, AC, and generator charging for flexible energy wherever you go.
₨ 118,999 ₨ 148,799
Add Extra Capacity: Adds 1024 Wh of extra battery capacity to your DELTA 2 system, effectively doubling total energy storage to ~2048 Wh for extended runtime.
Durable LFP Battery Chemistry: Built with long-lasting LiFePO₄ cells that maintain 80 %+ capacity after ~3000 cycles, giving an estimated ~10 years of daily use.
Smart Battery Integration: Works seamlessly with the DELTA 2 — the main unit and extra battery charge and discharge in unison for balanced performance.
Fast Recharge: When connected to DELTA 2, can recharge from 0 % to 80 % in about 80 minutes and to 100 % in ~130 minutes (AC input), keeping downtime low.
Multiple Power Inputs (via DELTA 2): Recharge using AC outlets, solar panels, or compatible generators, making it versatile for off-grid and home backup setups.
EcoFlow App Support: View real-time battery status, remaining runtime, charge/discharge data, and more from your smartphone using the EcoFlow app.
LCD Display Info: On-device display shows key metrics like percentage, input/output power, and estimated hours left (varies by retailer model).
Plug-and-Play: No special setup — simply connect to the DELTA 2 power station to expand capacity.
Stackable & Compact: Ergonomic design allows for stacking on top of the DELTA 2 or other units to save space and reduce clutter.
Built-in Battery Management System (BMS) protects against over-voltage, over-current, over-temperature, short circuits, and other electrical risks.
Home Backup Power: Keeps essentials running longer during outages.
Camping & Outdoor Use: Extends run time for off-grid adventures.
Travel & Mobile Deployments: Works well with solar, AC, and generator charging for flexible energy wherever you go.
1024 Wh built-in capacity — enough to power devices for hours or support essential appliances during outages.
Expandable Energy Storage — supports adding one DELTA 2 Extra Battery or DELTA Max Extra Battery to expand capacity up to ~3072 Wh.
Durable LiFePO₄ Battery Chemistry — long lifespan with ~3000+ cycles to 80 % capacity (~10 years of regular use).
Advanced Battery Management System (BMS) — protects against overload, overheating, and other risks.
1800 W Pure Sine Wave AC Output — can run most home appliances, power tools, and electronics.
X-Boost Technology — boosts output for heavier loads up to ~2200–2400 W.
Multiple Outlets & Ports — versatile outputs include AC outlets, USB-A, USB-A fast charge, USB-C (100 W), DC5521, and a car power port for broad device compatibility.
Auto EPS/UPS Switch — automatic switch to battery power during grid outages for essential devices.
X-Stream Fast Charging (AC) — charges from 0 % to ~80 % in ~50 minutes and 100 % in ~80 minutes (AC).
Solar Charging Ready — supports up to 500 W solar input with MPPT for efficient green charging.
DC & Car Charging — supports vehicle charging (12 V/24 V) and DC input for extra flexibility.
App Control — monitor power use, set schedules, and adjust settings from your smartphone via Wi-Fi or Bluetooth.
Part of EcoFlow Ecosystem — integrates with EcoFlow solar panels, extra batteries, and accessories like portable air conditioners or other devices.
Home Backup-Ready — can be used as a plug-and-play backup power system with partial home integration.
Lightweight for Its Class (~27 lb / 12 kg) — portable enough for outdoor trips, RVs, job sites, and emergency kits.
Safe for Indoor Use — emission-free, quiet, and clean compared with gas generators.
✔ Home emergency backup during blackouts or power cuts.
✔ Camping, RV, and outdoor adventures — power devices off-grid.
✔ Running appliances & tools requiring moderate power.
✔ Mobile work setups — charge laptops, phones, cameras, and more.
DELTA 2 expands up to 2048Wh with smart extra battery, keeping your home powered on in any emergency.
DELTA 2 and its Extra Battery charge and discharge in unison. Recharging from portable solar panels, AC outlets, or our Smart Generator is easy.
Charge up with DELTA 2 from 0-80% in 80 minutes and 0-100% in 130 minutes with AC input.
Get extra storage for accessories conveniently, saving space at home or on the go.
DELTA 2 fits with every port you’ll ever need to power any devices anywhere, so you will always feel right.
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.
There’s no setup. Just plug it into your power station for more energy storage. Using the EcoFlow app, you can charge and monitor the DELTA 2 Smart Extra Battery with ease.
| Specification | Details |
|---|---|
| Model Name | EcoFlow DELTA 2 Smart Extra Battery 🌟 |
| Capacity | 1,024 Wh (51.2 V) |
| Battery Chemistry | LFP (LiFePO₄) |
| Cycle Life | ~3,000 cycles to 80 %+ capacity |
| Net Weight | ~9.5 kg / 21 lbs |
| Dimensions | 400 × 211 × 281 mm / 15.7 × 8.3 × 11.1 in |
| Input (Extra Battery Port) | 51.2 V ⎓ 1,024 W max (X‑Stream & solar dual charging) |
| Output (Extra Battery Port) | 51.2 V ⎓ 2,048 W max |
| Operating Temp — Optimal | ~20 °C – 30 °C (68 °F – 86 °F) |
| Discharge Temp | -10 °C – 45 °C (14 °F – 113 °F) |
| Charging Temp | 0 °C – 45 °C (32 °F – 113 °F) |
| Storage Temp | -10 °C – 45 °C (14 °F – 113 °F) |
| Protection / Safety | Over‑voltage, overload, over‑temp, short‑circuit, low‑temp, low‑voltage, over‑current protections |
| Applicable Models | EcoFlow DELTA 2 (must be connected to a DELTA 2 to function) |
| Fast Recharge (via DELTA 2) | ~0–80 % in ~80 min; ~0–100 % in ~130 min (AC input) |
Notes:
This extra battery cannot be used standalone — it must be connected to an EcoFlow DELTA 2 power station to charge and discharge.
The output port rating (2048 W max) refers to how much power can be drawn through the DELTA 2 system when the extra battery is connected, not direct wall outlets on the battery itself.
Large Built‑in Capacity: ~10.24 kWh nominal energy per unit — suitable for household loads, backup power, and solar energy storage.
LiFePO₄ Battery Chemistry: Uses safe, stable lithium iron phosphate cells for long life and enhanced safety.
Parallel Expansion: Supports up to 50 units in parallel, enabling energy systems from ~10.24 kWh up to ~512 kWh (or more depending on configuration) for larger homes or commercial systems.
Modular Design: Flexibly adjust capacity by adding additional PowerBox G2 modules as energy needs grow.
1C Charge & Discharge Rate: Delivers strong power output with max discharge power ~10.24 kW and continuous current ~200 A.
High Peak Current: Can support peak discharge current up to ~300 A (2 min) for handling surge loads.
High Depth of Discharge: ~95 % DOD helps maximise usable energy from each cycle.
Built‑in Fire Protection: Active aerosol fire‑suppression system responds in ~5 seconds upon detecting abnormal heat or fire conditions.
Wide Operating Temperature: Operates reliably from ~–20 °C to +55 °C and supports optional self‑heating for cold climates.
Long Lifespan: LFP cells deliver ≥ 8000 cycles and ~10 years warranty with reliable performance over time.
Smart & Convenient
Integrated BMS: Intelligent Battery Management System protects against over‑charge, over‑discharge, over‑current and temperature extremes.
Built‑in Wi‑Fi & App Control: Smart monitoring and remote control with OTA firmware updates for easy system management (region dependent).
Communication Interfaces: Supports CAN/RS485 for seamless integration with hybrid or off‑grid inverters.
IP65 / IP66 Protection: High weatherproof rating makes the unit suitable for indoor or outdoor installation.
Slim & Space‑Saving Design: Reduced weight and volume (≈30 % smaller / 15 % lighter than predecessors) allow easier wall‑mount or floor installation.
Quiet Operation: Suitable near living spaces with minimal noise during use.
Home backup power during outages.
Solar energy storage to maximise self‑consumption and reduce bills.
Hybrid or off‑grid installations with inverter compatibility.
Commercial or large‑capacity energy systems when multiple units are paralleled.
980 Wh Capacity — ample energy to power devices for hours during outages or off-grid trips.
Long-Life LiFePO₄ Battery — durable lithium iron phosphate chemistry with 3000+ cycles while retaining ~80 % capacity for years of service.
Fast AC Charging — recharge from 0 % to 100 % in about 2 hours with AC input using EcoFlow’s fast charge.
Multiple Charging Methods — supports charging from AC wall outlets, solar panels, car charging, and DC input for flexible power anywhere.
AC Output: Rated 500 W continuous with X-Boost up to 650 W, capable of powering small appliances, lights, and electronics.
Multiple Ports: Includes a mix of AC outlets, USB-A, USB-A fast charge, USB-C (100 W), DC, and car power outputs — versatile for various devices.
EPS/UPS Functionality (<30 ms) — seamless automatic switching to battery power in outages, ideal for sensitive electronics (e.g., computers, routers).
App Support & Connectivity: Connect via Wi-Fi and Bluetooth to monitor battery status, output/input, and settings from the EcoFlow app.
Portable & Lightweight: Compact design weighing ~12–13 kg, easy to carry for outdoor use and storage.
Durable Build: Solid construction suited to everyday use, camping, home, and mobile applications.
Solar Recharge Support: Works with solar panels (up to ~500 W input) — recharge in ~2.9 hours under good sun.
Car Charging Support: Recharge via vehicle power (12 V/24 V) when grid power isn’t available.
Home Backup Power — running essentials during outages, with quick switchover to battery power.
Camping & Outdoor Use — keeping devices, lights, and small appliances powered off-grid.
Travel or RV Life — flexible charging options from AC, solar, or car.
Large Capacity: Nominal energy of ~14.336 kWh with a 51.2 V / 280 Ah LiFePO₄ battery — ideal for significant residential or commercial storage needs.
Advanced LiFePO₄ Chemistry: Stable and safe Lithium Iron Phosphate (LiFePO₄) cells offer superior thermal stability, safety, and longer life compared to traditional lead-acid batteries.
High Depth of Discharge: Up to 95 % usable capacity — lets you use most of the battery’s stored energy without damaging cells.
Long Cycle Life: Designed for ~8000+ cycles (~10 years) of operation, meaning years of reliable service with high efficiency.
Strong Charge/Discharge Currents:
• Recommended charge/discharge current ~140 A (0.5C)
• Max charge current ~200 A
• Max discharge current ~200 A
These high currents support powering large inverter loads in backup or off-grid systems.
Continuous Discharge Power: Capable of supporting up to ~10 kW of continuous discharge in some configurations.
Integrated Battery Management System (BMS): Provides protections against over-charge, over-discharge, over-current, over-temperature, and short circuits for safer long-term use.
Communication Interfaces: CAN and RS485 communication protocols enable easy connection to inverters and monitoring systems.
Built-in Wi-Fi Module: Some models include Wi-Fi for live system monitoring and OTA firmware updates via mobile apps.
Parallel Expansion: Supports up to 50 modules in parallel, letting you scale capacity from ~14.3 kWh up to ~716.8 kWh for larger systems without a hub.
Ideal for residential storage, off-grid systems, commercial energy backup, or hybrid solar installations.
Safety Certifications: Meets global safety standards including UN38.3, CE, and IEC62619.
Optional Fire Protection System: Some versions support an aerosol fire extinguishing module for enhanced protection in harsh environments.
Protection Rating: Typically IP20 for indoor battery installations.
Robust, Compact Build: Designed for floor-standing residential energy storage.
Easy Installation: Smaller footprint and lighter weight profile compared to older battery designs make installation easier.
Wide Operating Temperature: Operates from 0 °C to 55 °C for charging and –20 °C to 55 °C for discharging, accommodating various climates.
Solar hybrid systems (on-grid/off-grid) with compatible inverters (e.g., SMA, Victron, Solis, GoodWe, Deye, Growatt).
Home backup power during outages.
Commercial energy storage and demand shifting.
Scalable energy solutions where future expansion is needed.
High Extra Capacity: Adds 4096 Wh of additional energy storage to your DELTA Pro 3 system — effectively increasing usable battery capacity.Scalable Storage: Supports expandable system capacity up to 12 kWh when paired with two extra batteries.
LFP Battery Chemistry: Uses long-lasting LiFePO₄ (LFP) cells for durability, safety, and efficiency.
Long Cycle Life: Designed for ~4000 life cycles to 80 % capacity, giving years of reliable performance.
Plug-and-Play Setup: Easy plug-in installation with the EcoFlow DELTA Pro 3 — no complex wiring required.
Compact & Portable: Relatively compact design for a large-capacity battery, making it suitable for home backup, RV use, or off-grid systems.
LED Display: Built-in LED array display for monitoring status and performance at a glance.
Wi-Fi & Bluetooth Control: Remote monitoring and control via the EcoFlow app when connected with the main DELTA Pro 3 unit.
Wide Temperature Support:
Charging: 0 °C to 45 °C / 32 °F to 113 °F
Discharge: -10 °C to 45 °C / 14 °F to 113 °F
Storage: -10 °C to 45 °C
Built-in BMS: Battery Management System for protection against over-voltage, over-current, temperature extremes, and other issues (typical in EcoFlow LFP batteries).
Designed for EcoFlow DELTA Pro 3: Works seamlessly with the DELTA Pro 3 portable power station.
Stackable Expandability: You can add more than one extra battery to increase total energy storage.
5-Year Warranty: Covered by EcoFlow’s standard warranty for peace of mind.
EcoFlow DELTA Pro Smart Extra Battery 
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