EcoFlow DELTA 3 Series Smart Extra Battery
EcoFlow DELTA 3 Series Smart Extra Battery

Authorized EcoFlow Dealer
Manufacturer's Warranty Included
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EcoFlow DELTA 3 Series Smart Extra Battery: Double Your Power Capacity
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Transform your DELTA 3 power station into an extended power solution. This purpose-designed Smart Extra Battery seamlessly integrates with your DELTA 3 Plus, DELTA 3, or DELTA 3 Premium 1500 power station—instantly doubling your available power capacity with an additional 1024Wh of energy.
Built with advanced LFP (Lithium Iron Phosphate) battery chemistry, this expansion module offers exceptional longevity with over 3,000 charging cycles—providing up to 10 years of reliable operation. The perfect companion for extended outages, off-grid adventures, or anywhere you need substantial backup power for longer durations.
KEY FEATURES & BENEFITS
EXTENDED ENERGY RESERVES
Add 1024Wh of capacity to your power station, doubling your available energy for extended runtime—perfect for prolonged power outages, multi-day camping trips, or off-grid applications where additional power capacity is essential.
PREMIUM LFP BATTERY CHEMISTRY
Enjoy exceptional longevity and stability with advanced Lithium Iron Phosphate (LFP) technology that delivers over 3,000 charging cycles with 80%+ capacity remaining after 4,000 cycles—providing up to a decade of reliable service for true long-term value.
SEAMLESS INTEGRATION
Experience true plug-and-play convenience with simple connection to your DELTA 3 Series power station—no complex setup or configuration required. The system automatically recognizes the battery and integrates it into the power management system.
COMPREHENSIVE PROTECTION
Seven-layer protection system guards against over-voltage, overload, over-temperature, short circuit, low temperature, low voltage, and overcurrent conditions—ensuring safe operation in virtually any environment or usage scenario.
SMART POWER MANAGEMENT
- ✓ INTELLIGENT MONITORING: Track real-time performance metrics including capacity, charge/discharge rates, temperature, and cycle count through the intuitive EcoFlow app—providing complete visibility into your battery's status.
- ✓ OPTIMIZED CHARGING: The system intelligently manages power distribution between the main unit and extra battery—ensuring efficient charging and discharging patterns that maximize battery longevity.
- ✓ TEMPERATURE REGULATION: Advanced thermal management continuously monitors and adjusts to maintain optimal operating temperature between 20°C-30°C (68°F-86°F)—preserving battery health even in challenging environments.
- ✓ REMOTE CONTROL: Adjust settings, check status, and monitor power usage from anywhere using the EcoFlow mobile app—providing convenient management whether you're at home or away.
PERFECT COMPATIBILITY
The EcoFlow DELTA 3 Series Smart Extra Battery is specifically designed to work with the following EcoFlow power stations:
DELTA 3 Plus
Expand your 1024Wh DELTA 3 Plus to a robust 2048Wh system for extended backup power capacity and significantly longer runtime for essential devices.
DELTA 3
Double the capacity of your standard DELTA 3 from 1024Wh to 2048Wh, providing extra power for longer adventures or extended home backup scenarios.
DELTA 3 Premium 1500
Enhance your 1024Wh DELTA 3 Premium 1500 to achieve 2048Wh total capacity, creating a comprehensive power solution for demanding applications.
TECHNICAL SPECIFICATIONS
General Specifications | |
Weight | 9.6 kg | 21.2 lb |
Dimensions (W×D×H) | 397.6 × 202 × 198 mm | 15.7 × 8.0 × 7.8 in |
Output Specifications | |
Extra Battery Port | 40V-58.4V⎓48A Max |
Input Specifications | |
Extra Battery Port | 40V-58.4V⎓24A Max |
Battery Information | |
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 |
Temperature Specifications | |
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) |
WHAT'S INCLUDED
- 1 × EcoFlow DELTA 3 Series Smart Extra Battery
- 1 × EcoFlow DELTA 3 Extra Battery Cable
- 1 × User Manual
- 1 × Warranty Card
EXCEPTIONAL 5-YEAR WARRANTY PROTECTION
The EcoFlow DELTA 3 Series Smart Extra Battery includes a comprehensive 5-year warranty—ensuring it remains free from defects in materials, workmanship, and performance throughout this extended period. This industry-leading coverage reflects EcoFlow's confidence in the product's exceptional quality and provides you with long-term peace of mind for your power investment.
MAXIMIZE YOUR POWER CAPACITY
Our power experts with 10+ years of industry experience can help you design the perfect EcoFlow power solution for your specific needs.
Or connect with our team instantly via Live Chat with 30-second response time
Business Hours: Monday to Friday, 7 AM–5 PM EST
Email: support@powerdepotusa.com | Phone: +1 (888) 639-2241
Shipping & Delivery
Overview
At Power Depot USA, we strive to provide clear and reliable shipping services for all customers. This policy outlines our shipping process, delivery timeframes, and related information.
Shipping Coverage
- We provide shipping to addresses within the continental United States only
- Free standard shipping is included with all orders
- We do not currently offer shipping to Alaska, Hawaii, U.S. territories, or international destinations
Order Processing
- Orders are processed within 1-2 business days
- Orders placed before 5 PM EST on business days are processed the same day
- Orders placed after 5 PM EST or on weekends/holidays are processed the next business day
- Verification: High-value orders may require additional verification for your security
- Processing begins once payment is fully verified and approved
Delivery Estimates
- Standard Shipping: 3-5 business days transit time
- Total Estimated Delivery Time: 4-7 business days from purchase date
- Shipping timeframes are estimates and not guaranteed
Order Tracking
- You will receive an order confirmation email immediately after placing your order
- Tracking information will be emailed within 24 hours of shipment
- You can track your order status through our Order Tracking page on our website
- For tracking assistance, contact our customer service team
Shipping Methods
Standard Shipping (Free on all orders)
- Estimated delivery: 3-5 business days
- Tracking provided via email
Freight Shipping (Large Equipment)
- Required for generators, large solar arrays, and bulky power equipment
- Estimated delivery: 7-10 business days
- Pre-delivery call scheduled 24-48 hours before arrival
- Curbside delivery is standard; additional services available for a fee
Special Shipping Considerations
Inventory & Fulfillment
Power Depot USA operates as an authorized dealer working directly with manufacturers and authorized suppliers. Your order may ship from:
- Our warehouse in Buffalo, New York
- Directly from manufacturer facilities
- Authorized distribution centers
Shipping Delays
Potential causes for shipping delays include:
- Weather events
- Carrier service disruptions
- High seasonal demand
- Product availability from manufacturers
- Address verification issues
We will communicate any significant delays via email and provide updated delivery estimates.
Address Changes
If you need to change your delivery address after order placement:
- Contact our customer service team immediately
- Address changes may cause shipping delays
- Any additional fees from carriers due to address changes will be the customer's responsibility
- Address changes cannot be guaranteed once an order has shipped
Delivery Requirements
- Accuracy: Please ensure your shipping address is complete and accurate
- Business Deliveries: Indicate if delivery is to a business with limited receiving hours
- Restricted Areas: Some carriers cannot deliver to P.O. boxes or restricted access communities
Receiving Your Order
Delivery Inspection
- Inspect all packages immediately upon delivery
- Note any visible damage on the delivery receipt
- Count all packages to ensure complete delivery
- Do not refuse delivery unless extensive obvious damage is present
Shipping Issues
If you experience any of the following issues, please contact us promptly:
- Missing tracking information
- Package shows as delivered but was not received
- Damaged packaging upon arrival
- Significant shipping delays
Shipping Fees for Additional Services
- Standard Shipping: Free on all orders
- Freight Shipping: Included for qualifying large items
-
Additional Services:
- Lift gate service: $75 (when required)
- Inside delivery: $125 (when available)
- White glove delivery & installation: Available for select products, quoted upon request
Contact Information
Business Name: Power Depot USA
Address: 618 S Burno Dr, Palatine, IL 60067, United States
Email: support@powerdepotusa.com
Phone: +1 (888) 639-2241
Live Chat: Available with 30-second response time
Business Hours: Monday to Friday, 7 AM–5 PM EST