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The DEYE AI-W5.1-B is a modular 5.12kWh low-voltage lithium battery module designed to work seamlessly with DEYE hybrid inverters. Built using cobalt-free LiFePO₄ chemistry, it delivers high safety, long cycle life, and exceptional scalability for residential, rural, and light commercial energy storage systems.
With a stackable floor-mounted design, IP65 outdoor rating, and true off-grid capability, the AI-W5.1-B is a future-ready battery solution for customers who want real blackout protection and expansion flexibility.
Modular & Scalable Energy Storage
Each module: 5.12kWh usable capacity
Up to 6 modules per stack: 30.72kWh
Parallel capability: Up to 184.32kWh with one DEYE inverter
Start small and scale up over time without replacing your system.
Safe LiFePO₄ Battery Chemistry
Cobalt-free lithium iron phosphate cells provide superior thermal stability, safety, and long service life.
Long Cycle Life
Designed for ≥6,000 cycles, delivering reliable long-term performance.
Indoor & Outdoor Installation (IP65)
Fully sealed enclosure with natural cooling, suitable for indoor or outdoor environments.
Clean, Fast Installation
Floor-mounted, stackable system
No internal wiring between modules
Automatic networking when stacked
Smart Battery Management System (BMS) Included
Integrated intelligent BMS with multi-level protection, LED status indicators, and communication via CAN / RS485.
When paired with compatible DEYE hybrid inverters, the DEYE AI-W5.1-B delivers genuine off-grid operation — a key advantage over many battery systems on the market.
DEYE systems can operate in pure off-grid mode with:
❌ No gateway
❌ No backup box
❌ No external switching equipment
This simplifies installation, reduces cost, and removes additional points of failure.
Unlike many battery systems that limit output during outages, DEYE systems:
Deliver 100% of the inverter’s rated output power during blackouts
Support normal household and site operation, not just essential circuits
DEYE low-voltage hybrid inverters can provide:
⚡ Up to 2× rated inverter power for 10 seconds
This allows reliable starting of high-surge appliances such as:
Air conditioners
Pumps
Refrigerators & compressors
Power tools and workshop equipment
This makes DEYE ideal for off-grid, rural, and blackout-critical applications.
1 module: 5.12 kWh
2 modules: 10.24 kWh
3 modules: 15.36 kWh
4 modules: 20.48 kWh
5 modules: 25.6 kWh
6 modules: 30.72 kWh
Expandable further by paralleling stacks up to 184.32kWh with one inverter.
Battery Chemistry: Lithium Iron Phosphate (LiFePO₄)
Nominal Energy: 5.12 kWh
Nominal Voltage: 51.2 V
Operating Voltage Range: 44.8 – 57.6 V
Rated DC Power: 2.5 kW
Depth of Discharge: 100%
Communication: CAN / RS485
Cooling: Natural convection
Installation: Floor-mounted, stackable
Ingress Protection: IP65
Operating Temperature: −20°C to +55°C
Warranty: 10-year manufacturer warranty
Homes needing real blackout protection
Rural and semi-off-grid properties
High-load households
Customers planning staged battery expansion
Installations requiring simplicity without performance compromise
DEYE combines true off-grid capability, full blackout power, high surge handling, and massive scalability — without gateways or backup boxes. It’s one of the most flexible battery platforms available for Australian conditions.
Store more solar energy, reduce grid reliance, and gain true energy independence with the DEYE AI-W5.1-B battery system.
Order today and scale your energy storage with confidence.
All our products are covered by the Manufacturer's Warranty, which guarantees that they will be free from defects in materials and workmanship under normal use and service. The specific terms and duration of the warranty may vary depending on the product and the manufacturer. Please refer to the product's documentation or contact our customer support team for detailed warranty information.
Warranty Claim Process
In the unfortunate event that you encounter a faulty product, we want to make the warranty claim process as seamless as possible for you. To initiate a warranty claim, please follow these steps:
If damage is confirmed to be from normal wear-and-tear, drops, unauthorized repairs, or other non-warranty factors, service and shipping fees will apply. In such cases, we will contact the customer for approval before proceeding with paid repairs.
Unfortunately we cannot provide loaner units during the warranty repair process. For mission-critical equipment, we highly recommend purchasing backup units to prevent downtime in case of defects.
You have 30 calendar days to return an item from the date you received it.
To be eligible for a return:
Upon receiving your order, we kindly request that you thoroughly inspect all packages within 7 days of delivery. This inspection period is crucial as it allows you ample time to identify any visible damage caused during transit. Please keep in mind that promptly reporting any freight damage is vital in safeguarding your right to file a claim and ensuring a swift resolution.
Should you identify any freight damage during the inspection, we urge you to notify us immediately. Our customer support team is ready to assist you through the claim filing process and provide the necessary guidance to ensure a smooth and hassle-free experience.
The advertised price for this product includes the applicable STC battery rebate, applied as a pre-discount at the time of purchase.
To be eligible for the battery rebate:
Supply-only purchases are not eligible for the battery rebate.
By proceeding with this purchase, the customer agrees to assign all eligible Small-scale Technology Certificates (STCs) associated with the battery installation to Solar Battery Supermarket (or its nominated agent).
This assignment allows the rebate to be applied as a point-of-sale discount.
If the customer does not agree to assign the STCs, the full non-rebated price of the battery system will apply.
Installation by a licensed and accredited installer is mandatory to qualify for the rebate-adjusted price.
Standard metro installation is available from $500, subject to property assessment.
Additional works (including switchboard upgrades, long cable runs, or non-standard installations) may incur extra charges and will be quoted and approved prior to installation.
To assess eligibility and proceed with installation, the customer may be required to provide:
Failure to provide required information may delay installation or affect rebate eligibility.
This rebate offer does not limit your rights under Australian Consumer Law.