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.
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.
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.
Compact, Plug-and-Play Design: Lightweight and elegant, it features quick-connect AC/DC terminals for streamlined installation.
Single-Phase with Dual MPPT: Operating at 6 kW, this hybrid inverter boasts two MPPT channels for optimized solar energy harvesting and flexibility with panel configurations.
High Efficiency: Achieves peak efficiency around 97.6%, European efficiency of 96.7%, and MPPT efficiency up to 99.9%.
UPS-Level Backup (<10 ms): Ensures seamless power supply during grid outages, supporting heavy loads like air conditioners with minimal interruption.
Parallel Operation (up to 3 units): Supports expandable system design by enabling multiple units in parallel for greater backup capacity.
Load & Generator Management: Smart energy control capabilities allow dynamic power flow management across solar, battery, grid, and generator sources.
Low-Voltage Battery Compatible: Supports 48 V systems (battery voltage range 40–60 V), with 60 A continuous charge/discharge current.
Optimized Self-Consumption: Intelligent energy flow controls help maximize solar use and minimize utility feed-in and bills.
Robust Protection Suite: Includes integrated protection for SPD (Type II on DC side), anti-islanding, reverse polarity, insulation resistance monitoring, residual current detection, overcurrent, short-circuit, and surge protection. AFCI is available optionally.
Smart Home Integration: Supports multiple communications (Wi-Fi, RS485, CAN, SMS) with load control, dynamic power export limiting, and smart home compatibility.
Fanless & Quiet Operation: Cools via natural convection—no fans, low noise, and reliable performance.
Remote Shutdown Capability: Enables safety-compliant remote shutdown via communication interface.
Smart Monitoring Tools: LED indicators and app connectivity allow real-time and historical system performance tracking.
High Capacity: 12.8 V, 100 Ah nominal capacity with 1280 Wh energy storage — provides reliable 12 V power for a wide range of DC loads.
Deep-Cycle LiFePO₄ Cells: Uses LFP battery chemistry for safer operation, long life, and stable performance.
Long Cycle Life: Rated for ~6000+ cycles at 80 % depth of discharge, far exceeding traditional lead-acid batteries.
Lightweight & Compact: Significantly lighter and smaller than equivalent lead-acid batteries, making it easier to carry and install.
Continuous Output: Up to 1280 W continuous power suitable for various DC appliances and inverters.
Battery Management System (BMS): 100 A X-Guard BMS with advanced protection against over-charge, over-discharge, over-temperature, short-circuit, and over-current — ensuring safe, reliable operation.
Peak Discharge: Capable of higher surge currents (e.g., up to ~300 A for short durations — depending on regional spec), useful for motor starts or transient loads.
Expandable Configuration: Can be connected in series or parallel (e.g., 4P4S or 2S8P) to boost capacity and voltage for larger systems.
Versatile Charging: Compatible with solar panels, generators, or grid power — full recharge can take as little as ~2 hours, far faster than lead-acid.
Recommended Charge Current: Around 50 A for efficient and safe charging, with max continuous charge current up to 100 A.
Wide Operating Temps: Performs reliably in temperature ranges from roughly -14 °F to 131 °F (-10 °C to 55 °C) for discharge.
IP65 Protection: Rugged, water- and dust-resistant casing suitable for outdoor and mobile use.
Fire-Retardant Shell: Meets stringent safety standards with a self-extinguishing casing to reduce fire risk.
UL & IEC Certifications: Certified to industry safety standards (e.g., IEC62619, UL1973, CE, FCC, RoHS, UN38.3), ensuring quality and reliability.
Standard Terminal Type: Uses sturdy M8 bolts for secure connections.
Portable Size & Weight: Compact footprint (≈11.4 × 6.9 × 8.7 in) and lightweight (~26.7 lb / ~12.1 kg) make it easy to install in tight spaces — e.g., RVs, boats, solar setups.
Slot-In Replacement: Can replace Group 27–31 lead-acid batteries in many applications.
Good For: RV and camper power systems, solar battery banks, boating and trolling motors, off-grid workshops, emergency backup, DC appliances, and more — with durability and safety suitable for demanding conditions.
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