Adds 2048Wh - doubles total capacity of DELTA 3 Max Plus to 4096Wh Automotive-grade Full-Tab LFP Cells rated for 3,000+ charging cycles Plug-and-play connection - no configuration required Approximately 25% smaller in volume than the DELTA 2 Max Smart Extra Battery EcoFlow App monitoring for charge level, temperature and working status Supports connection of a second extra battery via EcoFlow Smart Extra Battery Expansion Adapter (sold separately) Operating temperature range from -10°C to 45°C Battery cable included in the box Manufacturer warranty: 3 years Dimensions: 494 x 239 x 196 mm EcoFlow DELTA 3 Max Plus Smart Extra Battery - 2048Wh Expansion Battery Double your storage capacity: The EcoFlow DELTA 3 Max Plus Smart Extra Battery connects directly to your DELTA 3 Max Plus power station, adding 2048Wh and bringing total system capacity to 4096Wh. If you need even more storage, a second extra battery can be added using the EcoFlow Smart Extra Battery Expansion Adapter (sold separately), taking the DELTA 3 Max Plus system to 6144Wh. Built for long-term reliability: This extra battery uses Automotive-grade Full-Tab LFP Cells - a full-tab cell design that reduces internal resistance, generates less heat, and maintains higher efficiency across each charge cycle. The battery is rated for over 3,000 charging cycles, making it suitable for regular, long-term use in home backup or off-grid applications. Compact and practical to use: At 494 × 239 × 196 mm and 16 kg, this unit is approximately 25% smaller in overall volume than the previous DELTA 2 Max Smart Extra Battery, making it easier to store alongside or beneath your power station. Connection is via a 4+8 high-current port using the included cable - simply plug in and the EcoFlow App picks up the new unit automatically for charge and temperature monitoring. Shop the full Power Stations & Solar range from Heavins.ie, supplying homes and businesses across Ireland with reliable off-grid energy solutions. Key Features Rated Capacity - 2048Wh (51.2V, 40Ah) of additional storage for your DELTA 3 Max Plus system. Automotive-grade Full-Tab LFP Cells - reduced internal resistance, lower heat output, and a longer cycle life compared to standard cell designs. 3,000+ Charging Cycles - built for long-term, repeated use without significant capacity degradation. Plug-and-Play Connection - connects to the DELTA 3 Max Plus via the included battery cable; no configuration or setup required. EcoFlow App Compatible - monitor charge level, working status, and temperature from your smartphone. Expandable to Two Batteries - add a second Smart Extra Battery using the EcoFlow Smart Extra Battery Expansion Adapter (sold separately) for up to 6144Wh total on the DELTA 3 Max Plus system. Wide Operating Temperature - discharge temperature range of -10°C to 45°C for use in variable conditions. Multiple Protections - over voltage, overload, over temperature, short circuit, low temperature, low voltage, and overcurrent protection built in. Specifications Model: EFD3MP-EB Rated capacity: 2048Wh (51.2V, 40Ah) Cell technology: Automotive-grade Full-Tab LFP Cells Charge cycles: Over 3,000 Extra Battery Port output: 43.2V-57.6V, 100A max Extra Battery Port input: 43.2V-57.6V, 48A max Charge temperature: 0°C to 45°C Discharge temperature: -10°C to 45°C Storage temperature: -10°C to 45°C Dimensions (HxWxD): 494 x 239 x 196 mm Weight: 16 kg (± 0.4 kg) Certifications: FCC, UL Manufacturer warranty: 3 years What's Included in the Box 1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery 1 x EcoFlow DELTA 3 Max Plus Smart Extra Battery Cable 1 x User manual