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Deye AI-W5.1-B Low Voltage Battery

The Deye AI-W5.1-B is a 5.12kWh modular LiFePO4 battery engineered for residential solar energy storage, hybrid inverter systems, home backup power, off-grid solar projects, and smart household ESS installations. With a 51.2V low-voltage architecture, IP65 enclosure, and stackable modular design, it is well suited to homeowners and installers seeking a safe, durable, and easy-to-expand lithium battery for solar applications.

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Official product information highlights non-toxic cobalt-free LFP chemistry, ≥6000 cycle life, wide operating temperature performance, and support for both indoor and outdoor installation. The AI-W5.1-B offers 5.12kWh per module and can be stacked up to 30.72kWh, making it a flexible choice for self-consumption, emergency backup, time-of-use optimization, and residential photovoltaic energy storage upgrades.

This battery is optimized for keywords such as 5.12kWh lithium battery, residential ESS battery, 51.2V LiFePO4 battery, home energy storage battery, low voltage solar battery, stackable battery module, hybrid inverter battery, backup power battery, modular LFP battery, and IP65 solar storage battery. Official page: https://deye.com/product/ai-w5-1-b/

Technical Specifications Feedback

Item	Details
Battery chemistry	LiFePO4
Capacity	100 Ah
Nominal voltage	51.2 V
Operating voltage	44.8–57.6 V
Nominal energy	5.12 kWh
Weight	approx. 74.5 kg
Dimensions (W×H×D)	720 × 255 × 569 mm
Performance / protection	≥6000 cycles (70% EOL), IP65-rated, natural cooling
Scalability	5.12 kWh per module, stackable up to 30.72 kWh
Application	indoor and outdoor installation
Warranty / certifications	10-year warranty; UN38.3, IEC62619, CE, VDE2510-50, UL1973, UL9540A and others listed by the manufacturer