Stackable Lithium Batteries

51.2V 20 kWh And 30 kWh Stackable Lithium Battery

Name: 51.2V 20 kWh And 30 kWh Stackable Lithium Battery
Brand: Sike Power

The upper half of the stackable family, configured at 20 kWh and 30 kWh for large homes, off-grid properties and small commercial sites.

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Product Overview

The upper half of the stackable family, configured at 20 kWh and 30 kWh for large homes, off-grid properties and small commercial sites. Modules measure 540 x 600 x 168 mm at about 53 kg each and stack to the capacity required, communicating over RS232, RS485 or CAN. At this capacity the alternative is usually a single large cabinet, and the reason to choose a stack instead is access: modules go in through a normal doorway and are assembled where they will stand.

Stackable 51.2V lithium battery modules stacked for a 30 kWh system

Key benefits

Why Buyers Choose This Pack

Large Capacity Through A Normal Door

53 kg modules carried in and stacked, instead of a 30 kWh cabinet that has to be manoeuvred as one piece.

Two Standard Configurations

20 kWh and 30 kWh cover most large-home and small-commercial requirements without a bespoke design.

6000+ Cycles Across The Stack

Every module carries the same cell grade and BMS specification, so the stack ages as one system.

Protocol Coverage

RS232, RS485 and CAN, confirmed against your inverter before the order rather than at commissioning.

Application scenarios

Where It Is Used

Large homes with heat pumps, air conditioning or EV charging
Off-grid properties carrying a full night with weather margin
Small commercial premises on demand-based tariffs
Workshops and farms with unreliable grid supply
Solar systems where the array is already large
Sites growing toward 30 kWh from an existing stack

Who it is for

The Buyers This Pack Suits

EPC Contractors On Large Residential

Delivering 20-30 kWh where access rules out a single cabinet.

Off-Grid System Designers

Sizing for a full night plus reserve rather than for evening self-consumption.

Small Commercial Buyers

Shops, clinics and workshops where an outage costs trading hours.

Problems it solves

What It Fixes

Access To The Plant Room

Large single cabinets frequently cannot be got into the space they are meant to occupy. A stack always can.

Capacity Sized For Today

A stack can be extended toward 30 kWh as consumption grows rather than replaced.

Commissioning Surprises

Protocol confirmed at the quotation stage means the inverter link is a setting rather than a discovery.

Specifications

Published Figures For This Pack

Every value below comes from our own product specification. Where a figure is not published we leave it out rather than estimating it.

51.2V 20 kWh And 30 kWh Stackable Lithium Battery specification
Nominal voltage	51.2 V
System capacity	20 kWh and 30 kWh configurations
Module dimensions	540 x 600 x 168 mm
Module weight	53 kg per module
Cycle life	6000+ cycles
Communication	RS232, RS485, CAN
Cells	Top-brand grade A LiFePO4
Certificates	MSDS, UN38.3, CE, ROHS, UL
Cells and BMS	Grade A LiFePO4 cells, smart BMS

Packing and documents

How It Ships And What Comes With It

Packing And Shipping

Packing follows UN38.3 requirements for lithium battery transport, and the carton and pallet arrangement is confirmed with the quotation for your quantity and destination. We do not publish a fixed carton specification here because it changes with order size and freight mode.

Documentation

UN38.3 and the MSDS travel with every lithium shipment, and the certificates listed in the specification table above are supplied for the model you order. Tell us the destination market at the quotation stage so the document set is planned rather than chased after the goods are built. Where a certificate we do not hold is required, we will say so rather than promise it.

Manufacturing

This pack is built at Shenzhen Sike Power Technology Co., Ltd. in Da Peng New District, Shenzhen, with cell grading, assembly, BMS integration, aging test and final inspection carried out in house. Only brand-new grade A LiFePO4 cells and a top-brand smart BMS go into it.

Download the catalogue and datasheets for the specification in PDF form.

Installation guide

Getting It Right First Time

Step 1

Confirm the final capacity before ordering so the base and controller suit the full stack.

Step 2

Check floor loading and clearance - a 30 kWh stack is six modules of about 53 kg.

Step 3

Send the inverter model for protocol confirmation before shipment.

Step 4

Keep modules matched in model and state of charge when extending an existing stack.

Step 5

Configure an inverter reserve so daily cycling does not run to the floor.

Comparison

How It Compares In Our Range

Choose by capacity and by how the modules have to reach the install position.

Alternatives to the 51.2V 20 kWh And 30 kWh Stackable Lithium Battery
20 kWh stack	Large home with heat pump or EV charging
30 kWh stack	Off-grid property or small commercial site
30 kWh floor cabinet 600Ah	Same capacity as one unit on wheels, where access allows
10 kWh wall mount	Typical family home, for comparison

FAQ

51.2V 20 kWh And 30 kWh Stackable Lithium Battery Questions

Is a 30 kWh stack the same as the 30 kWh floor cabinet?

Same capacity, different format. The stack is six modules assembled on site; the cabinet is a single unit on wheels. Access and future expansion usually decide which one fits the job.

Can I start at 20 kWh and extend to 30?

Yes, provided the base and controller were specified for six modules at the first order. Say so at the enquiry and it will be.

How heavy is each module?

About 53 kg, with dimensions of 540 x 600 x 168 mm.

What communication is supported?

RS232, RS485 and CAN. Send your inverter model and we will confirm the match.

Is this suitable for three-phase sites?

The battery is 51.2V DC; the phase arrangement is the inverter's job. Tell us the inverter and the site supply and we will confirm the combination works.

Which certificates apply?

MSDS, UN38.3, CE, ROHS and UL are listed for the stackable range.