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.
Built-in 298Wh Battery for off-grid operation — cools items at 39°F (4°C) for up to ~43 hours (35L) or ~39 hours (45L/55L) on a full charge.
Efficient Cooling System — uses a high-efficiency copper wire compressor that cools quickly with reduced power use, extending battery life.
Precise Temperature Control — advanced sensors keep temperatures stable within ±1°C / ±1.8°F.
Temperature Modes — includes Max Mode for rapid cooling/freezing and Eco Mode to reduce power draw and extend run time.
Variable DUAL-ZONE Cooling on 45L and 55L models — separate fridge and freezer sections with up to ~22°C (39.6°F) difference between zones.
Single-Zone Option (35L) — switchable between fridge and freezer in the smaller model.
Compact & Spacious — holds up to 58 cans (35L), 72 cans (45L), or 90 cans (55L) in a design that’s ~40 % smaller than standard electric coolers.
Dual-Sided Door Access and hidden wide handles make loading, unloading, and transport easier.
Thick Insulation & Sealing — ~2-inch foam and superior sealing improves cooling retention and reduces energy loss.
Multiple Charging Options:
AC Power Adapter (100–240 V, 95 W max)
Car Charging (12 V/24 V, ~100 W)
Solar Input (11–30 V, ~110 W max)
Doubles as a Power Bank: A 100 W USB-C port lets you charge phones/laptops while cooling.
Low Power Consumption: Quiet operation (< 38.5 dB) and energy-efficient cooling.
App Control: Monitor and adjust settings, view real-time battery status, set temperature, schedule shutdowns via the EcoFlow app.
Temperature Alerts: Get notified if internal temperatures drift too far, protecting food safety.
Versatile Use Cases: Ideal for car camping, RV trips, tent camping, tailgating, grocery transport, and outdoor excursions.
Rugged & Portable: Designed with a balanced weight, integrated handles, and protective casing to stand up to outdoor conditions.
Wide Operating Range: Works well in ambient temps from approximately –10°C to 50°C (14°F to 122°F).
IPX4 Splash Resistance — protection against splashing water, helpful outdoors.
Refrigerant: Uses eco-friendly R600a cooling gas.
Warranty: Typically offers a 2-year warranty.
Off-grid cooling for weekend trips
Keeping drinks and perishables chilled on long drives
Tailgating or outdoor gatherings
Backup fridge/freezer during power outages
Large Battery Capacity: ~2048 Wh — ideal for long runtimes and heavy use.
Expandable Energy Storage: Expand up to ~6144 Wh by adding up to two smart extra batteries.
Long Lifespan: LiFePO₄ (LFP) battery chemistry rated for ~3,000 cycles to 80%+ capacity — about 10 years of daily use.
Strong AC Output: Multiple AC outlets with ~2400 W continuous output, surge up to ~4800 W.
X-Boost High-Power Mode: Up to ~3100 W (or more depending on region/model), so it can run most appliances and power tools.
Multiple Ports: USB-A, USB-A fast charge, USB-C (100 W), car power, DC5521 — versatile for consumer electronics and smaller gear.
Fast AC Charging: High-rate X-Stream AC charging for rapid recharge.
Solar Charging Support: Up to ~1000 W solar input (via dual solar ports) for fast green power capture.
Car Charging: Supports 12 V/24 V car battery charging.
App Connectivity: Wi-Fi & Bluetooth connection with EcoFlow app — monitor and manage power flow, inputs, outputs, and battery status.
Advanced Power Management System: Built-in BMS protects against over-voltage, over-current, high temperature, and more.
Quiet Operation: Lower noise levels than many similarly sized power stations.
Robust & Portable: Reinforced ports, solid casing with fire-resistant materials, reinforced handles.
Lightweight for Capacity: 2 kWh class but lighter than many similar LFP units.
Versatile Use: Suitable for home backup, camping, RV life, off-grid living, and emergency power.
Home backup power (lights, fridges, routers, medical devices).
Outdoor or off-grid adventures (camping, cabins, RVs).
Running high-power tools or appliances thanks to high AC output.
Solar-powered energy storage systems with high MPPT efficiency.
Smart monitoring & energy management via mobile app
65 W Fast Charging: Delivers up to 65 W total output to power laptops, tablets, phones and other USB‑C devices quickly.
Multi‑Port Output: Has 2 × USB‑C ports + 1 × USB‑A port allowing you to charge up to 3 devices at the same time.
Flexible Power Distribution:
Single‑port up to 65 W (USB‑C1 or USB‑C2)
Dual‑port combinations (e.g., USB‑C1 + USB‑C2 up to ~45 W + 20 W)
Triple‑port charging (45 W + shared ~15 W) for small devices — phones, earbuds, etc.
Supports Fast‑Charge Protocols: Compatible with Power Delivery (PD 3.0/2.0), Quick Charge (QC 4.0+/3.0/2.0), PPS, PE 2.0, Huawei SCP/FCP, Samsung AFC, BCI 2.2 and DCP for wide device support and optimized charging.
GaN (Gallium Nitride) Technology: More efficient, generates less heat, and allows a compact size (~48 % smaller) than traditional silicon chargers.
Universal Compatibility: Works with 100–240 V AC input — use it worldwide without a voltage converter.
LED Indicator: Warm white LED shows when the charger is powered and connected.
Included Cable: Comes with a 100 W USB‑C to USB‑C cable (1 m) for high‑speed charging right out of the box.
Warranty: Typically includes an 18‑month warranty.
Compact Size: ~29.4 × 44.4 × 91.2 mm — easy to carry and travel‑friendly.
Lightweight: ~132–135 g — lightweight for portability.
Foldable Plug: (Some versions include a foldable plug design) making storage easier.
✔ Charging laptops (MacBook Air/Pro, Surface, ThinkPad, etc.) and phones fast
✔ Multiple devices simultaneously — laptop + phone + earbuds
✔ Travel and daily carry thanks to compact GaN design
✔ Global use (100–240 V compatible)
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.
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