EcoFlow Extra Solar Deep Cycle Battery for DELTA Max (DELTA2000EB-US)

The EcoFlow DELTA2000EB-US Smart Extra Battery is a high-capacity expansion module designed to increase the energy storage of EcoFlow DELTA Max and compatible DELTA series power stations. With a 2016Wh capacity and durable NCM lithium-ion chemistry, it significantly extends runtime for home backup, off-grid living, and emergency power applications. This expansion battery operates as part of a synchronized system, delivering seamless integration, smart monitoring, and reliable energy storage when paired with a compatible EcoFlow main unit.

Product Features

High-Capacity Energy Expansion

Adds 2016Wh of additional storage to compatible EcoFlow power stations, significantly increasing total runtime for essential appliances and backup systems.

Modular System Integration

Connects directly to DELTA Max or compatible EcoFlow units via a dedicated expansion port, enabling plug-and-play operation without complex setup.

Scalable Power System Design

Supports connection of up to two extra batteries with a DELTA Max system, expanding total capacity up to 6048Wh for extended energy independence.

Smart Monitoring and Control

Provides real-time data tracking through the EcoFlow app and main unit display, including battery level, power flow, and estimated runtime.

Integrated Battery Management System

Built-in BMS protection ensures safe operation by monitoring voltage, current, temperature, and short-circuit conditions.

Synchronized Charging and Discharging

Works in coordination with the main power station to manage charging from AC, solar, or car input sources efficiently.

Durable Deep Cycle Battery Design

Engineered for long-term use with 800+ charge cycles to 80 percent capacity, suitable for demanding backup and off-grid environments.

Safety and Protection Features

Includes advanced multi-layer safety systems to protect against overvoltage, overheating, and electrical faults.

Product Specifications

• Model: DELTA2000EB-US (EFD350)
• Battery capacity: 2016Wh (50.4V)
• Battery chemistry: Lithium-ion NCM (Nickel Cobalt Manganese)
• Cycle life: 800+ cycles to 80 percent capacity
• Weight: Approximately 18 kg (40 lbs)
• Dimensions: 46.4 × 23.5 × 28.3 cm
• Input port: 50.4V, up to 1800W max (via main unit system)
• Output port: 43V–58.4V, up to 3200W max (proprietary expansion port)
• Expandability: Supports up to 2 extra batteries per DELTA Max system (up to 6048Wh total)
• Operating temperature (optimal): 20°C to 30°C
• Charging temperature: 0°C to 45°C
• Discharging temperature: -20°C to 45°C
• Storage temperature: -20°C to 45°C
• Certifications: UL, CE, FCC, RoHS, TELEC
• Monitoring: LCD display and EcoFlow app support
• Safety system: Advanced Battery Management System (BMS) with multi-layer protection
• Charging behavior: Charges only via connected main unit or Smart Generator integration
• Maintenance guideline: Requires periodic charge cycling for long-term storage health