Batteries & Power Supply

Whether you're powering a DIY electronics project, maintaining a workshop, or simply keeping your everyday devices charged and organized, our Batteries & Power Supply collection has everything you need. From adjustable bench power supplies and switching power supply modules to smart battery chargers, lithium battery protection boards (BMS), and heavy-duty storage organizers — we've got you covered. All products are selected for quality, reliability, and value, making them ideal for hobbyists, engineers, and tech enthusiasts alike.

Explore Our Top Products

0-30V 0-3A Adjustable DC Switching Power Supply DIY Kit — A versatile bench power supply kit perfect for prototyping and lab work, with adjustable voltage (0–30V) and current (0–3A) output.
1-Slot USB Smart Battery Charger 3.7V–4.2V | 18650 Lithium — A compact, intelligent USB charger compatible with 18650, 14500, and 16340 lithium cells, featuring overcharge and short-circuit protection.
100W 24V AC DC Switching Power Supply Module 4A 6A DIY Kit — A high-power switching supply module delivering stable 24V output, ideal for LED drivers, CNC machines, and industrial DIY builds.
10S 36V 15A BMS 18650 Lithium Battery Protection Board — A robust 10-series BMS board with balance charging and 15A protection, designed for 36V lithium-ion battery packs used in e-bikes and power tools.
10-Slot Waterproof Battery Organizer Case – AA AAA 18650 — Keep your batteries safe, sorted, and moisture-free with this durable waterproof organizer that holds AA, AAA, and 18650 cells.

Why Shop Our Batteries & Power Supply Collection?

Wide Voltage Range: Products spanning from compact 3.7V lithium chargers to 100W, 24V switching power supplies — there's a solution for every application.
DIY-Friendly Kits: Our adjustable power supply kits and BMS boards are designed for makers and engineers who want full control over their builds.
Safety First: Battery management system (BMS) boards provide overcurrent, overvoltage, and short-circuit protection for your lithium packs.
Stay Organized: Hard plastic and waterproof battery storage boxes keep your cells protected, sorted, and ready to use.
Quality Components: All modules and kits are built with reliable PCB components for long-lasting, stable performance.

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What types of batteries are compatible with the smart battery chargers in this collection?

A: Our smart battery chargers are designed for 3.7V–4.2V lithium-ion and lithium polymer cells, including popular sizes like 18650, 14500, and 16340. Always check the product page for full compatibility details before purchasing.

Q: What is a BMS (Battery Management System) board and do I need one?

A: A BMS (Battery Management System) board protects your lithium battery pack from overcharging, over-discharging, overcurrent, and short circuits. If you're building a custom 18650 battery pack for an e-bike, power tool, or energy storage project, a BMS board like our 10S 10A BMS 36V Battery Protection Board is essential for safety and longevity.

Q: What is the difference between the adjustable DC power supply kits in this collection?

A: We offer several adjustable DC power supply options. The 0-30V Adjustable DC Power Supply Module – DIY Lab Kit is a module-only option for integration into custom builds, while the 0-30V 0-3A Adjustable DC Switching Power Supply DIY Kit comes as a full kit for those who want to assemble a complete bench unit. Choose based on your project requirements and assembly preference.

Q: Are the battery storage boxes suitable for carrying batteries during travel?

A: Yes! Our 10-Slot Waterproof Battery Organizer Case and hard plastic storage boxes are compact, durable, and travel-friendly. They securely hold AA, AAA, and 18650 batteries to prevent loose cells from short-circuiting in your bag or toolbox.

Q: What output power does the 100W 24V switching power supply module provide?

A: The 100W 24V AC-DC Switching Power Supply Board Converter Module delivers up to 100 watts of power at a stable 24V DC output, with a current range of 4A to 6A depending on the variant. It is suitable for LED lighting, CNC systems, and other high-demand DIY applications.