A sleek, ultra-compact, and functional Dual 18650 Battery Charger designed with a focus on minimalism and clean cable management.
Unlike standard series/parallel holders, this design features two completely independent TP4056 charging channels, allowing you to charge two 18650 batteries individually without cross-interference or balance issues.
✨ Key Features
True Independent Dual-Channel Charging: Powered by two separate TP4056 modules. Charge one or two batteries at the same time safely.
Fast 1A Per Channel: Delivers up to 1A charging current per slot (requires a 5V / 2A+ USB power supply or wall adapter).
Clean & Hidden Wiring: Built-in internal wire routing channels ensure all cables remain completely concealed for a neat, professional look.
Minimalist & Compact Footprint: Engineered to use minimal desk space and material while maintaining structural rigidity.
Standard Hardware Compatible: Designed specifically for widely available DIY components.
2x Single 18650 Battery Holder Cases with leads/wires (https://www.aliexpress.com/item/1005010746945266.html?spm=a2g0o.order_list.order_list_main.76.64631802EziRGr#nav-specification)
4x M3 Screws
Solid core or flexible wire (22–24 AWG recommended)
Heat shrink tubing / Soldering iron
🔌 Wiring & Assembly Notes
Power Input: Wire the USB power input of both TP4056 modules in parallel so both boards receive power from the main Type-C port / input terminals.
Cable Management: Route the positive and negative leads from the battery holders through the integrated internal channels before soldering them to the respective TP4056 output pads (B+ / B-).
Power Supply: Make sure to plug the charger into a USB adapter capable of delivering at least 5V / 2A to ensure maximum charging speed on both slots simultaneously.
🖨️ Print Settings Recommendation
Material: PETG or ABS
Layer Height: 0.16 mm
Infill: 25–50%
Walls/Perimeters: 3
Supports: No supports required (designed for easy, clean printing)
Feel free to leave feedback or post your makes! If you enjoy this design, a boost or a like is greatly appreciated!
Bargestt
