Home/Products/Batteries & storage/WB-5105 · 5.12 kWh

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Batteries & storage · SLV-WB-51100

51.2V 100Ah Wall-Mount LiFePO4 Battery

5.12 kWh usable, 51.2 V, 100 A continuous — a 148 mm wall cabinet with integrated BMS, CAN and RS485, and parallel expansion to 81.9 kWh.

5.12 kWh per module, expandable to 16 modules — 81.9 kWh on one bus
6,000 cycles at 90% DoD, 80% capacity retained, 10-year warranty
Integrated BMS with CAN 2.0B / RS485 — Pylontech and GROWATT profiles
IP65 steel enclosure, -20 °C to 55 °C discharge, wall or floor mount

Price

Quoted per order

Unit price depends on quantity, cell batch and destination port. Send the quantity and we return FOB Ningbo and CIF pricing the same working day.

Certification — CE · IEC 62619 · UN38.3

Warranty — 10 years / 6,000 cycles

Lead time — 25 days · MOQ 20 units

Shipping — Class 9, FOB Ningbo / CIF

Request a quote →

OVERVIEW

Storage that fits the wall, not the garage floor.

A 5 kWh battery is usually the point where a home system stops being a hobby and starts carrying the house. It is also the point where a rack, a cabinet and a dedicated room normally appear. The WB-5105 is built the other way round: a sealed 148 mm steel case that hangs on two bolts beside the consumer unit, with the breaker, terminals and BMS all inside the same IP65 box.

Underneath it is a conventional 16S LiFePO4 pack — grade-A prismatic cells, a passive balancing BMS, and the Pylontech and GROWATT protocol families that most hybrid inverters already expect. Nothing proprietary, nothing that needs a cloud account to keep running.

5.12 kWhUsable per module

148 mmCabinet depth

48 kgInstalled weight

16Modules in parallel

A three-module bank on a utility wall — 15.36 kWh, no cabinet, no floor space used.

FORM FACTOR

148 mm deep. It hangs like a boiler.

Powder-coated SPCC steel, recessed terminals, cable entry from the left, right or bottom. The bracket is a single plate: mark two holes, drill, hang, torque the M8 studs to 8 N·m. If the wall is not load bearing the floor stand in the box takes over — same footprint, same clearances.

480 × 620 × 148 mm — fits between studs at 600 mm centres
48 kg, one installer and one lift
100 mm clearance above, 200 mm at the terminal side
IP65, so a covered outdoor wall is acceptable

WB-5105 wall-mount battery, three-quarter view

CYCLE LIFE

6,000 cycles — and the curve to prove it.

Anyone can print a cycle count. What matters in year eight is where the curve sits, so we publish the retention line instead of a headline number: 80% at 6,000 cycles, tested at 0.5C and 90% depth of discharge on the IEC 62619 rig. The batch test report for your serial numbers ships with the container.

6,000Cycles to 80%

≥ 95%Round-trip

10 yrWarranty

SCALING

Sixteen modules. One breaker. One CAN bus.

DIP switches set the address; the master reports the whole bank to the inverter as a single battery. Start with one module in a cabin and finish with sixteen in a plant room — the inverter configuration never changes, and nothing needs an external controller to keep the stack balanced.

5.12 kWh → 81.9 kWh on the same 48 V bus
Master / slave auto-detect, no firmware mismatch between batches
One DC breaker per stack, sized to the cable not the module count

Parallel battery modules in a machine room

COMPATIBILITY

Your inverter probably already speaks it.

Two protocol families cover most of what gets installed — Pylontech CAN for the hybrids, GROWATT / DEYE RS485 for the off-grid boxes. Set the profile on the DIP panel, or send the inverter model with the order and we flash it before the module leaves the hub.

PylontechVictronGrowattDeyeSolisSofarGoodWeVoltronicSchneiderSMALuxpowerMPP Solar+ 19 more on request

SPECIFICATION

WB-5105, in full

Values at 25 °C unless stated. Custom cell grades, larger cabinets and 100 Ah → 300 Ah builds are available on OEM terms.

Electrical

Nominal voltage51.2 V (16S LiFePO4)

Usable capacity5.12 kWh · 100 Ah

CellGrade-A prismatic LiFePO4, 3.2 V / 100 Ah

Voltage window44.8 – 57.6 V

Continuous charge / discharge50 A / 100 A

Peak discharge150 A for 10 s

Charge cut-off57.6 V (3.60 V per cell)

Discharge cut-off44.8 V (2.80 V per cell)

Cycle life6,000 cycles at 90% DoD, 25 °C, ≥ 80% retained

Round-trip efficiency≥ 95%

Self-discharge< 3% per month at 25 °C

BMSIntegrated, passive balancing, over/under voltage, over-current, over-temperature

CommunicationCAN 2.0B and RS485 · Pylontech / GROWATT / DEYE profiles

Mechanical

Dimensions (W × H × D)480 × 620 × 148 mm

Weight48 kg

EnclosureSPCC steel, powder coated, RAL 9005

Protection ratingIP65

MountingWall bracket and floor stand both supplied

TerminalsM8 studs for 25 mm² cable, recessed

Parallel capabilityUp to 16 modules (81.9 kWh), DIP addressed

DisplaySOC LED bar and status LED, no screen to fail

Environment

Charge temperature0 °C to 55 °C

Discharge temperature-20 °C to 55 °C

Storage temperature-20 °C to 45 °C, 15 – 75% RH

Altitude≤ 2,000 m

CoolingNatural convection, no fan

Compliance & logistics

CertificationCE, IEC 62619, IEC 62040, RoHS

TransportUN38.3 test summary, MSDS, Class 9 packing

Warranty10 years or 6,000 cycles, whichever comes first

Container load240 modules per 20 ft container

HS code8507.60

IN THE BOX

Everything needed for a one-day install

Nothing in the carton is an optional extra except the tools.

×1

Battery module

WB-5105, 5.12 kWh, 51.2 V

×1 set

Wall bracket

With M6 expansion bolts and shims

×2

DC power cable

1.5 m, 25 mm², pre-crimped M8 lugs

×1

CAN cable

2 m, shielded, RJ45 both ends

×2

Terminal covers

Snap-on, IP20 finger safe

×1

DIP & label sheet

Address map and torque sticker

×1

Documents

Quick-install guide, warranty card, batch test report

×1

Grounding cable

1 m, 6 mm², with ring terminals

COMPARE

The same cabinet, three capacities

Same footprint width and height, deeper cabinet as the cell count grows. All three share the BMS, the protocols and the bracket.

Model	WB-51055.12 kWh · this page	WB-511010.24 kWh	WB-511515.36 kWh
Usable capacity	5.12 kWh	10.24 kWh	15.36 kWh
Configuration	16S 1P · 100 Ah	16S 2P · 200 Ah	16S 3P · 300 Ah
Continuous discharge	100 A	150 A	200 A
Dimensions (W×H×D)	480 × 620 × 148 mm	480 × 620 × 225 mm	480 × 620 × 300 mm
Weight	48 kg	88 kg	126 kg
Max parallel	16 modules · 81.9 kWh	8 modules · 81.9 kWh	5 modules · 76.8 kWh
Best for	Apartment backup, cabin, small shop	Whole-home backup, clinic	Small C&I, cold room, telecom
Lead time	25 days	28 days	32 days

FAQ

Questions that come up before the first container

Can I add modules later, or do I have to size the bank now?

Add later. Every module ships with the same firmware family and the same DIP addressing, so you can start with one and parallel a second a year down the line. Mixed vintages are allowed as long as the firmware major version matches — we send the update file if it does not.

Will it work with the inverter I already have?

Most likely. Two profiles cover the bulk of the market: Pylontech CAN and GROWATT/DEYE RS485. Pick the profile on the DIP panel, or send us the inverter brand and model and we flash it before it leaves the hub — that is part of the order, not an extra.

What is the MOQ and how fast can you ship?

MOQ is 20 modules for a stock order; 3 to 5 units for a sample or pilot. Standard lead time is 25 days from deposit, 32 days for the 15.36 kWh version. Sea freight leaves Ningbo twice a week.

How is a battery with this much energy shipped?

As UN38.3 Class 9 dangerous goods, in certified packaging with the test summary and MSDS attached to the shipping documents. A 20 ft container takes 240 modules. We handle the DG declaration and hand you the packing list for customs.

What happens if a module loses capacity inside the warranty?

Run the capacity test in the template we send with the order, log it at 0.5C, and mail us the result. Below 80% inside ten years we replace or credit the module — RMA decision within 10 working days, replacement shipped with your next container.

Do you supply the whole system or just the battery?

Either. The battery is a module in a catalogue that also carries panels, hybrid and off-grid inverters, MPPT controllers and mounting. If you order the set we pre-configure the inverter to the battery and ship it on one pallet with a single wiring diagram.

DOCUMENTS

Take the numbers to your engineer

PDF · 2.4 MB

Datasheet — WB-5105

Full electrical and mechanical specification, dimensions and derating curves.

PDF · 6.1 MB

Certificate pack

CE declaration, IEC 62619 report, UN38.3 test summary and MSDS.

DWG · STEP

CAD and wall template

Mounting hole pattern and clearance drawing — ask and we send the file.

Rack Mount LiFePO4 Batteries

19-inch modules for cabinets and C&I rooms

Hybrid Inverters

Solar, grid and battery in one box

MPPT Charge Controller

98% efficient, 10 – 100 A

Roof Mount Brackets

Rails, L-feet, mid and end clamps

QUOTE

Get a landed price for the WB‑5105

Send the quantity, the destination port and the inverter you are pairing it with. You get unit price, freight, lead time and the certificate pack in one reply.

MOQ 20 units · samples from 3
FOB Ningbo or CIF your port
25-day lead time on repeat orders