EcoFlow EcoFlow PowerOcean DC Fit 5,1 KWh (Wall) (5.1 kWh) Battery Home battery High voltage

ProThe EcoFlow PowerOcean DC Fit 5.1 kWh (Wall) is a wall-mountable DC-coupled storage kit comprising EF PD-5-S1 (PV/storage converter) ×1, EF BD-5.1-S1 (battery pack) ×1 and EF BD-B-S1 (base) ×1. The single-pack system delivers a nominal 5.1 kWh battery (usable ≈ 4.8 kWh at 95% DoD), a max. system output of 3.3 kW and a max. system PV→storage input of 2.5 kW. At component level the EF PD-5-S1 supports up to 5 kW PV input (2.5 kW per string). The battery runs at a nominal 800 V DC (operating range 720–960 V DC), the unit is IP65 rated, passively cooled (natural convection), emits ≤35 dB and is sized for easy building integration (680 × 201 × 682 mm, 77.3 kg).

• Retrofit-friendly – DC coupling enables adding storage without replacing the existing AC inverter, reducing labour and cost.
• Right-sized for homes – 3.3 kW system output suits typical household loads while keeping balance-of-system complexity low.
• Fast PV charging (component level) – Converter supports up to 5 kW PV (2.5 kW per string) for efficient solar energy capture.
• High-voltage architecture – ~800 V DC nominal voltage lowers current, simplifies cabling and improves efficiency.
• Compact, weatherproof form factor – Wall-mount footprint (680 × 201 × 682 mm) and IP65 rating enable flexible indoor/outdoor sheltered installation.
• Safe and quiet operation – LFP chemistry, integrated safety measures and passive cooling yield robust safety and low noise (≤35 dB).
• Straightforward monitoring & integration – Ethernet, Wi-Fi, Bluetooth and RS485 interfaces plus EcoFlow app support for commissioning and remote monitoring.

• Configuration: EF PD-5-S1 ×1 + EF BD-5.1-S1 ×1 + EF BD-B-S1 ×1
• Nominal capacity: 5.1 kWh (system)
• Usable capacity: ≈ 4.8 kWh (95% DoD, typical)
• Battery chemistry: LFP (Lithium-Iron-Phosphate)
• Nominal battery voltage / operating range: 800 V DC (battery operating range 720–960 V DC); battery discharge range 800–900 V DC
• Max. system output (system level): 3.3 kW
• Max. system input (PV → storage, system level): 2.5 kW
• Converter (EF PD-5-S1) — PV input (component level): up to 5 kW (2.5 kW per string); PV operating range 150–800 V DC; Max PV voltage 1000 V DC; Isc 21 A per string
• Battery component figures: max. discharge power 5.2 kW and max. charge power 4.8 kW measured with multiple packs (component-level values)
• Max. charging / discharging currents (battery): Discharge current up to 6.5 A DC (component figure); Charge current up to 6 A DC (component figure)
• Dimensions (W × D × H): 680 × 201 × 682 mm (without adjustable feet)
• Weight: 77.3 kg (without adjustable feet)
• Enclosure / protection class: IP65
• Operating temperature: −20 °C to +50 °C; max altitude ≤ 3000 m
• Noise level: ≤ 35 dB
• Cooling: Natural convection (passive cooling)
• Communications: Ethernet, Wi-Fi, Bluetooth, RS485; EcoFlow app/web compatibility for monitoring and management
• Safety & certifications: CE, CB, TÜV mark; safety standard IEC/EN 62109-1; battery and EMC standards compliant
• Mounting options: Wall-mount (this listing) / floor-stand per installation guidelines


Important note: If the charging or discharging voltage falls below 208 V, the device cannot achieve 2.5 kW per string.

The EcoFlow PowerOcean DC Fit 5.1 kWh (Wall) offers a compact, safe and cost-effective way to add ≈4.8 kWh usable storage to an existing PV system with 3.3 kW usable output and straightforward wall mounting. With its high-voltage LFP architecture, passive cooling, integrated safety features and flexible communications, it’s an excellent choice for residential retrofits. Purchase through certified distributors for secure service and local support 

EcoFlow, founded in 2017 by battery engineers, is a pioneer in portable power products, solar technology and intelligent smart home energy solutions. As the world transitions to renewable energy, EcoFlow is shaping the future with innovative products and leading technology.