Battery Protection & Charger Boards
Battery Protection & Charger Boards
Whether you're building a custom lithium battery pack, repairing a power tool, designing a solar energy system, or crafting a DIY power bank, reliable battery protection and charging circuitry is the foundation of any safe and efficient project. Our Battery Protection & Charger Boards collection brings together everything you need — from single-cell BMS protection boards and lithium charger modules to multi-port solar charge controllers and spot-welding nickel strips. Every component is selected for quality, compatibility, and ease of integration, so you can prototype faster and build with confidence.
What's in This Collection?
Our range covers the full spectrum of battery management and charging needs:
- BMS Protection Boards — Safeguard your lithium cells from overcharge, over-discharge, over-current, and short circuits. The 10PCS 1S BMS PCM Protection Board for 18650 32650 Li-ion is ideal for single-cell applications, while the 10S 36V 20A/30A Lithium Battery BMS Protection Board DIY Kit powers e-bike and scooter builds at full scale.
- Charger & Power Bank Modules — Build your own portable chargers with the 18650 Dual USB Power Bank Charger Board 5V 2.4A Boost Module, delivering up to 2.4A of fast USB output from standard 18650 cells.
- Solar Charge Controllers — Harness renewable energy efficiently with our 100W Solar Charge Controller – USB-C PD & Dual USB Multi-Port, supporting fast-charge protocols for modern devices.
- Protection ICs & Battery Hardware — From the 10PCS FS8205A Lithium Battery Protection IC SOT23-6 Chips to storage boxes, shell kits, nickel strips, and dual-slot chargers — we stock every accessory required for a complete, professional-grade battery build.
Why Choose Our Battery Boards & Modules?
- ✅ Wide voltage compatibility: Solutions for 3.7V single-cell up to 48V multi-cell battery packs.
- ✅ DIY & professional ready: Suitable for hobbyists, makers, engineers, and repair technicians alike.
- ✅ Balanced protection: BMS boards with cell balancing, temperature sensing, and over-current cut-off built in.
- ✅ Solar & off-grid support: Charge controllers compatible with 12V, 24V, and 48V systems.
- ✅ Complete ecosystem: Pair boards with our battery shells, organizer cases, nickel strips, and chargers for an all-in-one solution.
Popular Use Cases
Our battery protection and charger boards are used across a huge variety of applications, including:
- DIY e-bike and electric scooter battery packs
- Custom power banks and portable chargers
- Off-grid and solar energy storage systems
- Cordless power tool battery rebuilds
- RC vehicles, drones, and robotics projects
- Home energy backup systems
Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What is a BMS (Battery Management System) protection board and do I need one?
A: A BMS protection board is an electronic circuit that monitors and protects lithium battery cells from dangerous conditions such as overcharging, over-discharging, over-current, and short circuits. If you are building or assembling any lithium-ion or LiFePO4 battery pack — whether for an e-bike, power bank, power tool, or solar storage — a BMS board is essential for both safety and battery longevity.
Q: What does the "S" number mean on BMS boards like 1S, 10S, or 10S 42V?
A: The "S" number refers to the number of lithium cells connected in series. A 1S BMS protects a single 3.7V cell (e.g., one 18650), while a 10S BMS manages 10 cells in series, resulting in a nominal voltage of around 36V (42V fully charged) — commonly used in e-bikes and electric scooters. Always match the BMS "S" rating to the number of series cells in your battery pack.
Q: Are these solar charge controllers compatible with different battery voltages?
A: Yes. Our solar charge controllers, such as the 100W USB-C PD multi-port model and the XY-CD60 battery charge/discharge controller, support multiple voltage configurations including 12V, 24V, and 48V systems. They are suitable for off-grid solar setups, RV power systems, and DIY home energy storage projects.
Q: Can I use these charger boards to build my own power bank?
A: Absolutely! Modules like the 18650 Dual USB Power Bank Charger Board with 5V 2.4A Boost output are specifically designed for DIY power bank projects. Simply pair the board with one or more 18650 lithium cells, a protective enclosure, and a battery protection PCB for a fully functional, custom portable charger.
Q: What accessories do I need alongside a BMS board for a complete battery pack?
A: In addition to a BMS protection board, a complete battery pack typically requires: lithium cells (such as 18650s), nickel strip sheets for spot-welding cell connections, a battery shell or enclosure, insulation materials, and a compatible charger. Browse our collection for storage boxes, plastic shells, nickel sheets, and charger boards — everything you need in one place.
