EcoFlow Power Ocean 5kWh LFP Expansion Battery

The EcoFlow Power Ocean 5kWh LFP Expansion Battery is a high-voltage lithium iron phosphate (LFP) battery module designed to expand EcoFlow Power Ocean hybrid inverter systems, providing additional storage capacity for residential solar self-consumption and backup power.

Product Description

This 5.12kWh expansion battery connects seamlessly to the Power Ocean inverter and base battery, enabling scalable storage from 5kWh up to 15kWh on single-phase systems. Featuring 800V high-voltage architecture and integrated fire prevention, it delivers high efficiency, safety and long cycle life in a compact, IP65-rated module suitable for indoor/outdoor installation.

Key Features

• Plug-and-play expansion: Auto-detects and integrates with Power Ocean inverter + base battery systems without additional configuration.
• High-voltage 800V design: Optimised for Power Ocean hybrid inverters with independent DC-DC converters for maximum efficiency.
• Advanced safety: Integrated Aerosol Fire Suppression System (AFSS), cell-level monitoring and thermal runaway prevention.
• Passive cooling: Completely fanless operation for silent performance and zero maintenance.
• Long cycle life: >6000 cycles at 95% DoD with 15-year warranty when used in approved configurations.
• Smart connectivity: Full integration with EcoFlow app for energy monitoring, tariff optimisation and VPP participation.

Technical Details

• Capacity: 5.12kWh nominal (4.86kWh usable at 95% DoD).
• Battery chemistry: Lithium iron phosphate (LFP).
• Nominal voltage: 800V DC (720–960V operating range).
• Max charge/discharge current: 10A continuous.
• Max efficiency: >98% round-trip.
• Depth of discharge: 95%.
• Cycle life: >6000 cycles (25°C, 95% DoD).
• Operating temperature: Charge 0–50°C, discharge −20–50°C.
• Communication: CANBUS for seamless inverter integration.

Physical Specifications

• Dimensions (W × D × H): 680mm × 183mm × 452mm.
• Net weight: 59.2kg.
• Protection rating: IP65 (fully outdoor rated).
• Mounting: Wall-mount or floor-standing (stackable).
• Cooling: Passive (fanless).
• Certifications: CE, IEC62619, UN38.3, G98/G99 compliant.

System & Application Notes

• Compatibility: Power Ocean 3.6kW/6kW single-phase hybrid inverters only.
• Expansion capacity: Up to 3 x 5kWh batteries total (15kWh maximum single-phase).
• Installation: Stackable design with auto-locking connectors; professional installation recommended.
• Applications: Residential solar storage expansion, time-of-use optimisation, outage backup.
• Smart features: Octopus Agile tariff integration, remote monitoring, VPP/grid services ready.
• Warranty: 15 years (when used with Power Ocean inverter system).