Battery Boards & Chargers
Battery Boards & Chargers for DIY Electronics & Maker Projects
Power your next build with confidence. Whether you're designing a custom 3D-printed enclosure, assembling a DIY power bank, protecting a lithium pack, or charging 18650 cells for a power tool battery, our Battery Boards & Chargers collection has everything you need. We stock a curated range of BMS protection boards, charging modules, battery holders, connector pads, and complete DIY power bank shells — all sourced for reliability, compatibility, and maker-friendly value. From beginner hobbyists to seasoned electronics engineers, these components are built to perform.
Why Choose Our Battery Boards & Chargers?
- Wide Compatibility: Components designed for 18650, 21700, CR2032, LiFePO₄, Li-Ion, and EV battery packs.
- Bulk Value: Many products available in convenient 10-packs, reducing cost per unit for production or prototyping runs.
- Maker-Ready: Plug-and-play modules like the TP4056 charger board or BMS protection boards that integrate seamlessly into your projects.
- High-Quality Materials: Pure copper cables, ABS brackets, and low-resistance metal connector pads for safe, efficient power delivery.
Featured Products
Explore some of our most popular battery boards and charger components:
- 10-Pack TP4056 Type-C 18650 Li-Ion Battery Charger Module — A go-to charging solution for 18650 lithium-ion cells, featuring a modern Type-C input and built-in protection circuitry.
- 12V 4-Cell LiFePO₄ Battery Protection Board BMS + Wire — Keep your LiFePO₄ packs safe from overcharge, over-discharge, and short circuits with this reliable BMS board.
- 15S 18650 BMS 18V Battery Protection Board – BL1830 BL1840 — Purpose-built for power tool battery rebuilds, compatible with popular Makita BL1830/BL1840 packs.
- 12-Slot 18650 DIY Power Bank Shell – Dual USB, Type-C & Wireless — Build a high-capacity power bank with dual USB, Type-C, and wireless charging in one sleek enclosure.
- 10-Pack Pure Copper 2.5mm² EV Battery Connection Cables 48V–84V — Heavy-duty pure copper cables rated for 48V–84V EV battery series connections, sold in economical 10-packs.
What's in This Collection?
Our Battery Boards & Chargers category covers the full spectrum of lithium battery management and power delivery components, including:
- BMS Protection Boards – for 12V LiFePO₄ packs, 18V power tool batteries, and multi-cell configurations.
- Charging Modules – TP4056-based Type-C chargers for 18650 cells and multi-voltage Li-Ion chargers for 12.6V–21V packs.
- DIY Power Bank Shells – 12-slot 18650 and 12×21700 enclosures with fast charging and wireless output.
- Battery Holders & Brackets – ABS mounting brackets for 66160 cylindrical cells and CR2032 coin cell sockets in vertical and horizontal orientations.
- Connector Pads & Cables – L-shaped low-resistance metal connector pads and pure copper EV interconnect cables.
- Relay Charging Controllers – 12V DC auto battery charging controller relay boards for automatic charge management.
Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What is a BMS board and why do I need one for my lithium battery pack?
A: A Battery Management System (BMS) board monitors and protects lithium battery cells from overcharging, over-discharging, overcurrent, and short circuits. It is an essential component in any DIY lithium battery pack — including 18650 power tool batteries and LiFePO₄ packs — to ensure safe operation and extend cell lifespan.
Q: Are the TP4056 Type-C charger modules suitable for charging 18650 batteries in DIY power banks?
A: Yes! The TP4056 Type-C 18650 Li-Ion Battery Charger Module is one of the most popular choices for single-cell 18650 charging in DIY power bank and maker projects. It features built-in overcharge and over-discharge protection, making it safe and easy to integrate.
Q: What is the difference between the 12-slot 18650 and the 12×21700 DIY power bank shells?
A: The 12-slot 18650 shell is designed to hold standard 18650 lithium cells (18mm × 65mm), while the 12×21700 shell accommodates the larger 21700 format cells (21mm × 70mm), which offer higher capacity per cell. Choose based on the cell type you plan to use in your build.
Q: Can I use the pure copper EV battery connection cables for home energy storage systems?
A: The 2.5mm² Pure Copper EV Battery Connection Cables are rated for 48V–84V series battery connections and are suitable for EV packs, e-bike batteries, and DIY home energy storage systems operating within that voltage range. Always verify your system's current requirements against the cable's rated capacity before installation.
Q: Do the 66160 ABS battery holder brackets work with different cell orientations?
A: Yes. Our 66160 ABS mounting brackets are available in both 1×1 and 1×2 configurations to support single or dual side-by-side cell arrangements. They are designed to securely hold 66.2mm-diameter cylindrical lithium cells, making them ideal for custom battery pack assembly in 3D printing, robotics, and energy storage projects.
