51.2V Stackable DIY Battery Box Kit for 280–314Ah Cells with JK 200A BMS

51.2V Stackable DIY Battery Box Kit

Build your own solar storage battery with this 48V-class, 51.2V 16S LiFePO4 battery enclosure kit, designed for compatible 280–314Ah prismatic cells.

The stackable steel enclosure brings the main components together for experienced DIY builders who want to source fewer parts separately and assemble their own battery.

Fully unassembled. Battery cells are not included.

Key Features

• 280–314Ah cell compatibility: designed for 16 matching prismatic LiFePO4 cells; confirm dimensions and terminal layout.

• JK 200A BMS with 2A active balancing: included for your 16S battery build.

• 4.3-inch LCD: view battery information from the front panel.

• 200A DC circuit breaker: included with the internal connection components.

• Stackable battery enclosure: horizontal steel housing for an organised installation.

• Assembly video available: guidance for customers with battery-building experience.

The 200A BMS specification is a component rating, not a guaranteed continuous-current rating for the completed battery.

Build a 14.34–16.08kWh Battery

These figures describe example completed batteries. Cells are purchased separately; usable energy depends on the cells and system settings.

What’s Included?

• Steel battery box panels, supports and mounting hardware.

• JK PB2A16S20P BMS with 2A active balancing.

• 4.3-inch LCD and 200A DC circuit breaker.

• PCB boards and mounting components.

• Positive and negative terminals.

• Four 35mm² internal power cables with fitted lugs.

Not included: battery cells, cell busbars, epoxy insulation sheets, external or parallel power cables, inter-unit communication cables, inverter, charger or tools.

Busbars are supplied with battery cells purchased from AmpBird. Confirm that the connectors suit your selected cells and this kit’s layout.

Full Assembly, with a Clear Understanding of the Work

This kit is delivered as separate components. It requires more than installing cells into a prepared enclosure.

The build includes:

• Assembling the enclosure and mounting its internal components.
• Positioning the cells and fitting the required insulation.
• Installing the BMS, display, PCB boards and circuit breaker.
• Connecting the cell busbars, internal power cables and BMS wiring.
• Configuring the BMS for the selected cells.
• Checking the completed assembly before connecting it to the wider system.

You should already be comfortable with LiFePO4 battery assembly, polarity checks, BMS wiring requirements and correct terminal tightening. Suitable tools and test equipment are required.

Before purchase, contact AmpBird to confirm the assembly documentation available for this configuration. Use the applicable component instructions and a verified wiring diagram during the build.

Any assembled-product photos show the intended finished appearance. The kit is supplied unassembled, and any battery cells shown are for illustration only.

Is This the Right Kit for You?

This kit is a good fit if you:

• Want an economical enclosure package for compatible 280–314Ah cells.
• Prefer sourcing the main enclosure and control components together.
• Have the experience and tools to assemble and check a battery.
• Want to understand the internal layout and take an active role in the build.

If you expect a ready-to-use battery or a box with the internal wiring already completed, this fully unassembled version will require more work than you are looking for.

Assembly & Compatibility

This DIY LiFePO4 battery kit requires full enclosure assembly, component installation, wiring, BMS configuration and final checks. Relevant experience and suitable tools are required. An assembly video is available.

For inverter communication, send us your exact inverter model to confirm the protocol and cable requirements. Before building a multi-unit system, confirm the permitted stacking arrangement and electrical parallel configuration.

Assembled photos show the completed appearance. The kit is delivered unassembled.

Shipping & Support

Available from China and Poland, subject to stock. Poland warehouse shipping is for EU destinations only; customers outside the EU should select China.

Damaged components can be replaced following review. Send your order number and clear photos so we can arrange the appropriate parts.

Need help choosing your DIY solar battery kit? Send us your cell model, inverter model and delivery country before ordering.