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Increase the capacity of your DEYE Energy Storage System with the DEYE AI-W5.1-B 5.12kWh Battery Module. Designed for modular expansion, each battery module adds 5.12kWh of nominal energy, allowing you to grow your storage system as your energy needs increase.
Built using Lithium Iron Phosphate (LiFePO₄) technology, the AI-W5.1-B offers exceptional safety, long service life, and reliable performance for residential and commercial solar energy storage systems. The intelligent battery architecture supports automatic networking, remote monitoring, firmware upgrades, and seamless integration with compatible DEYE hybrid inverters.
This listing is for one (1) DEYE AI-W5.1-B Battery Module only.
Not Included:
Power Distribution Unit (PDU)
Battery Base
Battery-to-Inverter Cable Kit
Hybrid Inverter
Mounting Hardware
This battery module cannot operate as a standalone battery and must be installed as part of a compatible DEYE AI-W5.1-B battery system. The PDU, base and connection cables are sold separately or included with complete battery systems.
5.12kWh Nominal Battery Capacity
Premium LiFePO₄ (Lithium Iron Phosphate) cells
Safe cobalt-free battery chemistry
Expandable modular battery system
Stack 1–6 battery modules per system
Supports up to 6 battery clusters (36 modules) for a maximum 184kWh capacity
Built-in intelligent Battery Management System (BMS)
Automatic battery networking
Remote monitoring and firmware upgrades
High discharge capability
IP65 rated when installed in the complete battery system
Wall-mounted or floor-mounted installation
10-Year Manufacturer's Warranty
The AI-W5.1-B is designed to grow with your energy requirements.
| Battery Modules | Nominal Capacity | Usable Capacity* |
|---|---|---|
| 1 | 5.12kWh | 4.6kWh |
| 2 | 10.24kWh | 9.2kWh |
| 3 | 15.36kWh | 13.8kWh |
| 4 | 20.48kWh | 18.4kWh |
| 5 | 25.60kWh | 23.0kWh |
| 6 | 30.72kWh | 27.6kWh |
*Usable energy based on 90% depth of discharge.
The AI-W5.1-B uses advanced Lithium Iron Phosphate battery cells, providing:
Superior thermal stability
Longer battery lifespan
High energy density
Excellent cycle life
Maintenance-free operation
Environmentally friendly cobalt-free chemistry
Intelligent battery protection via integrated BMS
Designed for reliable performance in demanding environments.
IP65 weather resistance (when installed as a complete system)
Natural cooling
Charge temperature: 0°C to 55°C
Discharge temperature: -20°C to 55°C
Wall or floor mounting
Remote monitoring support
Automatic battery module networking
| Feature | Specification |
|---|---|
| Model | AI-W5.1-B |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Nominal Energy | 5.12kWh |
| Usable Energy | 4.6kWh |
| Nominal Voltage | 51.2V |
| Operating Voltage | 43.2V – 57.6V |
| Capacity | 100Ah |
| Recommended Charge/Discharge Current | 50A |
| Maximum Charge/Discharge Current | 100A |
| Peak Current (10 Seconds) | 150A |
| Recommended Depth of Discharge | 90% |
| Battery Module Dimensions | 720 × 255 × 300mm |
| Battery Module Weight | 53kg |
| Communication | CAN 2.0, RS485 |
| Cycle Life | ≥6,000 Cycles |
| Energy Throughput | 16MWh |
| Installation | Wall or Floor Mounted |
| Warranty | 10 Years |
1 × DEYE AI-W5.1-B 5.12kWh Battery Module
Not Included
AI-W5.1-PDU1-B Power Distribution Unit
AI-W5.1 Battery Base
AI-W5.1-PCable1500 Battery Cable Kit
Hybrid Inverter
Designed for use with:
DEYE AI-W5.1-B Battery System
DEYE AI-W5.1-PDU1-B Power Distribution Unit
DEYE AI-W5.1 Battery Base
Compatible DEYE Hybrid Inverters
Genuine DEYE Products
Australian Warranty Support
Expert Technical Advice
Australia-Wide Delivery
Competitive Pricing
Professional After-Sales Support
Important: This is an expansion battery module only. A compatible DEYE AI-W5.1-B system with the required PDU and battery base is needed for operation. Installation must be carried out by a qualified installer in accordance with Australian standards.
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.