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Deye Complete Off-Grid Solar & Battery System
Deye AI-W5.1B Stackable Battery (5.12kWh) – Modular LiFePO₄ Energy Storage
Premium low-voltage (51.2V) LiFePO₄ battery modules designed to scale from a small home system to large storage banks. Now also available with solar panel configurations in 2.38kWh, 4.75kWh, 5.70kWh, 7.6kWh, 8.55kWh, 9.50kWh & 11.4kWh options. Built tough for Australian conditions, with clean installs and future expandability.
Overview
The Deye AI-W5.1B is a modular (LFP) LiFePO₄ battery solution that lets you start with one module and grow capacity over time. LFP chemistry is known for safety and long service life, while the stackable format keeps the system neat and installer-friendly.
This package also includes solar panel configuration options in 2.38kWh, 4.75kWh, 5.70kWh, 7.6kWh, 8.55kWh, 9.50kWh & 11.4kWh to match your energy requirements.
Key Benefits
- Modular scalability: add modules now or later as your loads grow
- Solar panel options included: available in multiple kWh configurations
- Clean installs: stackable system reduces clutter and complexity
- Built tough: IP65 rating for indoor/outdoor installs
- Long life: ≥ 6000 cycles to 70% end-of-life capacity
- Rebate-ready: CEC approved battery model (program rules apply)
Need Help Sizing It?
Tell us what you want to run overnight (fridge, lights, air-con, pumps, etc.) or send a power bill and we’ll recommend the right battery and solar panel configuration.
Available Solar Panel Configurations
- 2.38kWh Solar Panel Configuration
- 4.75kWh Solar Panel Configuration
- 5.70kWh Solar Panel Configuration
- 7.6kWh Solar Panel Configuration
- 8.55kWh Solar Panel Configuration
- 9.50kWh Solar Panel Configuration
- 11.4kWh Solar Panel Configuration
Solar panel quantity and configuration vary depending on the selected kWh option.
Modular Expansion (Verified)
The AI-W5.1B system scales in two ways:
- Stacking (per stack): 1–6 modules per stack (5.12kWh → 30.72kWh)
- Parallel (multiple stacks): up to 6 stacks (clusters) in parallel
Maximum parallel capacity depends on inverter compatibility, site design, protection, cable sizing and manufacturer requirements.
What’s Included
- Deye AI-W5.1B battery modules (quantity based on selected option)
- Solar Panels Included (configuration varies depending on selected option)
- Base + BMS included for each stack
- Required interconnects/communication components
- Deye Combiner Box included when ordering more than 1 stack
Technical Specifications (Per Module)
| Model | AI-W5.1-B |
| Battery Chemistry | LiFePO₄ (LFP) |
| Nominal Energy | 5.12kWh |
| Capacity | 100Ah |
| Nominal Voltage | 51.2V |
| Operating Voltage | 44.8V – 57.6V |
| Ingress Protection | IP65 |
| Operating Temperature | -20°C to 55°C |
| Cycle Life | ≥ 6000 cycles |
| Weight (Approx.) | 74.5 kg |
| Warranty | 10 years |
FAQs
Are solar panels included?
Yes — solar panel configurations are included and available in 2.38kWh, 4.75kWh, 5.70kWh, 7.6kWh, 8.55kWh, 9.50kWh and 11.4kWh options.
Can I expand the battery capacity later?
Yes — the modular design allows additional battery modules to be added later, subject to inverter compatibility.
Is it suitable for outdoor installation?
Yes — this battery system is IP65 rated and suitable for indoor or outdoor installation.
Does each stack require a base and BMS?
Yes — each stack uses a base and BMS included with the stack configuration.
Document
Video
Battery
- Chemistry
- LiFePO4
- Capacity
- 100Ah
BMS
- BMS Included
- Yes
- Active Balancer
- No
- Bluetooth
- No
Physical
- Weight
- 74.5kg
- Dimensions
- 720 × 255 × 569 mmmm
Certifications
- IEC 62619 Certified
- No
- CEC Approved
- No
Installation & Warranty
- Warranty
- 10 years
- Installation Type
- DIY+ Electrician
- Installation Difficulty
- Electrician Required
We have a 30-day return policy if the item is damaged or is not as described, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at sales@lifepo4oz.com. If your return is accepted, we’ll provide instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at sales@lifepo4oz.com.
If you change your mind, you may be eligible for a return, however the items must be unused and in their original packaging. Once returned to us, we will inspect the goods and, if approved, a 20% restocking fee will apply.
Damages and issues
If you receive any items which appear to be damaged, do not attempt to use them. Please inspect your order upon receipt and contact us immediately if the item is defective, damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.
Products damaged in transit
If you receive a shipment that has been damaged in transit, a replacement or refund may be provided, subject to the following conditions:
- The return or damage claim must be made within 24 hours of receiving the shipment.
- All shipments must be inspected for damage during the unloading process.
- Clear photos of the damaged packaging and damaged product must be provided as evidence.
- Photos must be taken during the unloading process.
- Photos must clearly show all damage and, where possible, the likely cause of the damage.
- The total approved claim value, including freight costs, will be credited to your account.
Exceptions / non-returnable items
We do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. A 20% restocking fee will apply.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded to your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund.
All orders will be safely packed and shipped within 1 day. All products are shipped via Road Freight only.
All efforts are made to ensure the products safe during transport, however if you receive an item which looks like it may have been damaged during tranport you must take a photo before trying to use the product.
Shipping
All orders are shipped via Road Freight. As such there is not Express Shipping available.
RETURNS
We aim to keep our customers happy and if you are unhappy with your items due to them being damaged or not as described, simply return them for a refund. A 20% restocking fee will apply.
Top Quality Goods
Our aim is to provide high-quality products at an affordable price. If you receive a product that is damaged, do not use the item. Please inform us within 24 hours of receiving that product. We will replace the product as soon as possible without any charges.
REFUNDS
A refund will be provided if you have purchased an item that does not operate as described. Once we have verified you claims we will offer a refund and pay for the return freight cost.
