DEYE AI-W5.1-B LFP Battery

Solar BatteriesModel AI-W5.1-B

Deye 5.12 kWh 51.2 V Lithium Solar Battery AI-W5.1-B

A 5.12 kWh low-voltage LiFePO4 battery in a sealed IP65 floor cabinet, expandable module by module to 184 kWh across 36 parallel units.

  • Energy: 5.12 kWh
  • Usable Energy: 4.6 kWh
  • Nominal Voltage: 51.2 V
  • Cycle Life: >6000
AED 2,530incl. VAT

In stock

  • Delivered within 3 business days, door to door, to every market we serve.
  • Dispatched the same business day for an order placed before 21:00 (Dubai time), or the next business day after.
  • Delivery charge: AED 375
  • 10-year warranty
  • Authorised Deye distributor for the Middle East — certificate No. GFKFLFI1.
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Deye 5.12 kWh 51.2 V Lithium Solar Battery AI-W5.1-B features

  • Decade-spanning cycle life

    LiFePO4 chemistry rated for more than 6,000 cycles while keeping 70% of capacity at end of life.

  • 4.6 kWh ready every night

    Each unit yields 4.6 kWh of usable energy at the recommended 90% depth of discharge.

  • Sealed for the outdoors

    The IP65 floor-standing cabinet shrugs off dust and water, beside the house or in the garage.

  • Charging through the winter

    A built-in heating function lets the pack accept charge at temperatures down to -20 degrees C.

  • Room to grow to 184 kWh

    Parallel up to 36 units, with CAN2.0 and RS485 keeping every one in step with the inverter.

  • 16 MWh design throughput

    Rated for 16 MWh of energy throughput and covered by a 10-year warranty.

About the Deye 5.12 kWh 51.2 V Lithium Solar Battery AI-W5.1-B

Run your essential loads through the night on a battery that lives happily outdoors. The Deye AI-W5.1-B stores 5.12 kWh, 4.6 kWh of it usable at the recommended 90% depth of discharge, behind an IP65-sealed floor-standing cabinet, so it installs beside the house as readily as inside the garage. Its 51.2 V architecture pairs with low-voltage hybrid inverters, and growth stays simple: connect up to 36 units in parallel for as much as 184 kWh, while the AI-W range itself spans configurations from AI-W5.1-B to AI-W30.7-B. LiFePO4 cells rated for more than 6,000 cycles keep 70% of their capacity at end of life, and a built-in heating function lets the pack accept charge at temperatures down to -20 degrees C. CAN2.0 and RS485 ports handle inverter communication, a 125 A breaker is built in, and the manufacturer covers the unit for 10 years. We are an authorised Deye distributor and supply the AI-W5.1-B from our own stock, with technical support before and after the sale.

Specifications last updated 24 January 2026

Deye 5.12 kWh 51.2 V Lithium Solar Battery AI-W5.1-B full specifications

Electrical(28)

Energy5.12 kWh
Usable Energy4.6 kWh
Module Energy5.12 kWh
System Energy5.12 kWh
Max. Capacity184 kWh
Nominal Voltage51.2 V
Module Nominal Voltage51.2 V
System Nominal Voltage51.2 V
Operating Voltage44.8-57.6 V
Rated Capacity100 Ah
Module Capacity100 Ah
Cell ChemistryLiFePO4
Cycle Life>6000
End-of-Life Capacity70 %
Energy Throughput16 MWh
Recommended Depth of Discharge90 %
Rated DC Power2.5 kW
Max. Charge Current100 A
Max. Discharge Current100 A
Max. Charge/Discharge Current100 A
Recommended Charge/Discharge Current50 A
Peak Discharge Current150 A
Min. Battery Module Quantity1
Battery Module ModelsAI-W5.1-B, AI-W10.2-B, AI-W15.3-B, AI-W20.4-B, AI-W25.6-B, AI-W30.7-B
Parallel Units36
Built-in Circuit Breaker125A 2P, 60Vdc
Protection FeaturesBMS Protection
Warranty (Years)10

Mechanical(7)

Communication PortsCAN2.0, RS485
Dimensions720 x 569 x 255 mm
Additional NotesStandard charge: 25±2°C constant current 50A to 57.6V
Module Dimensions720±3 x 300±1.5 x 254±1.5 mm
Module Weight53 kg
Status IndicatorBattery module: 3LED (working, alarming, protecting); PDU module: 5LED (SOC 20%-100%), 3LED (working, alarming, protecting)
Weight74.5 kg

Environmental(9)

Altitude<3000 m
Charge Temperature0-55 (-20 to 55 when heating on) °C
Discharge Temperature-20 to 55 °C
Operating Humidity5-95 (non-condensing) %
Installation LocationFloor-Mounted
Enclosure IP RatingIP65
Storage Temperature0-35 °C
Cooling TypeNatural Cooling
Working TemperatureCharge: 0-55 (-20 to 55 when heating on) / Discharge: -20 to 55 °C

Certifications(11)

  • UN38.3
  • CE
  • CE-LVD
  • UK
  • FCC
  • CEC
  • CEI 0-21
  • IEC62619
  • VDE2510-50
  • UL1973
  • UL9540A

Downloads & support

PDFThe manufacturer's sheet, to print or share

Frequently Asked Questions

Which inverters can the AI-W5.1-B work with?

It is a 51.2 V low-voltage battery with a 44.8-57.6 V operating window, so it pairs with low-voltage hybrid inverters that communicate over CAN2.0 or RS485.

How far can I expand an AI-W5.1-B system?

Up to 36 units can run in parallel, taking total capacity to 184 kWh; the AI-W line spans configurations from AI-W5.1-B up to AI-W30.7-B.

Can the AI-W5.1-B be installed outside?

Yes. The cabinet is rated IP65 and designed for floor mounting, with discharge supported from -20 to 55 degrees C and operation at altitudes up to 3,000 m.

What happens to this battery in cold weather?

Charging normally starts at 0 degrees C, but with the heating function active the pack accepts charge from -20 degrees C, so winter mornings do not lock it out.

How long should the AI-W5.1-B last?

The LiFePO4 cells are rated beyond 6,000 cycles with 70% capacity remaining, design energy throughput is 16 MWh, and the warranty runs for 10 years.

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