BAT420 Li-ion Battery Case Housing & PCB Protection Board Kit

BAT420 Battery Case Plastic Housing with PCB – 10.8V / 12V Li-ion Shell Kit

Give your power tool or device a new lease on life with this BAT420 / BAT412A / BAT413A compatible battery case housing kit. Designed for experienced DIY builders and battery repair technicians, this set includes a durable plastic shell and a built-in PCB charging protection board — everything you need to rebuild or repair a 10.8V / 12V Li-ion battery pack, without the cells.

Made in Mainland China.

⚠️ Important Notice – Please Read Before Ordering:

• This is a DIY component kit — no battery cells are included. You must supply your own compatible Li-ion cells.
• Intended only for individuals with professional knowledge, hands-on battery assembly experience, and specialized tools.
• Minor variations in label printing, nickel strip layout, or PCB design may occur between production batches. Core functionality remains unchanged.
• Due to monitor color differences, the actual color may vary slightly from product photos.
• All sales are final — please purchase with confidence in your technical ability.

Key Features

• Compatible Models: BAT420, BAT412A, BAT413A battery packs
• Voltage: 10.8V / 12V Li-ion
• Includes: Plastic outer shell + PCB charging protection board (1 complete set)
• Material: High-quality plastic body with metal contacts
• PCB Protection: Built-in charge/discharge protection circuitry for safe battery operation
• 100% Brand New Components — aftermarket replacement, not OEM
• No battery cells included — shell and PCB only

Specifications

Who Is This For?

This kit is ideal for electronics hobbyists, repair technicians, and power tool enthusiasts who want to rebuild dead battery packs at a fraction of the cost of a brand-new replacement. If you already have the right Li-ion cells and soldering/assembly tools on hand, this housing kit is the missing piece of your battery rebuild project.

For more DIY electronics and maker components, check out our 0.1MHz–6GHz 20dB LNA RF Low Noise Amplifier Module and our 1-to-5 SATA Power Splitter Cable 18AWG.

For safety guidance on lithium-ion battery handling, refer to the U.S. Consumer Product Safety Commission (CPSC) – Lithium-Ion Battery Safety.

Frequently Asked Questions

Q: Does the BAT420 battery case kit include Li-ion battery cells?

A: No. This kit contains only the plastic housing shell and the PCB charging protection board. You must source and install compatible 10.8V / 12V Li-ion battery cells separately. It is designed for individuals with hands-on battery assembly experience.

Q: Is the BAT420 shell compatible with BAT412A and BAT413A battery packs?

A: Yes. This case housing is designed to be compatible with BAT420, BAT412A, and BAT413A style battery packs operating at 10.8V or 12V Li-ion configurations.

Q: What tools do I need to assemble this battery case kit?

A: You will need specialized battery assembly tools, including a spot welder or soldering iron for connecting battery cells, wire strippers, a multimeter for testing, and appropriate safety equipment for working with lithium-ion cells. This product is not suitable for beginners without prior experience.

Q: Will the PCB design always look exactly like the product photos?

A: The PCB layout and appearance may vary slightly between production batches due to supplier or technology updates. However, the electrical functionality and protection features remain the same, ensuring reliable performance for your battery rebuild project.