Power Bank Case Single Cell For 18650 Board With USB Board

DIY Mini Power Bank Case for Single 18650 Battery (5V USB)

​Product Description:

Keep your electronic projects and everyday gadgets powered on the go with this compact DIY Power Bank Case. Designed to house a single 18650 lithium-ion battery, this sleek enclosure features an integrated circuit board that instantly transforms your bare battery into a reliable, portable 5V power supply.

​Whether you are prototyping a wireless ESP32 or Arduino project, building custom lighting setups, or simply need an emergency backup charger for your USB accessories, this case delivers steady and safe performance in a pocket-sized form factor.

​Key Features:

• ​Maker-Friendly Power: The ultimate portable power solution for IoT projects, microcontrollers, and DIY electronic builds.
• ​Easy Assembly: Simply drop in a compatible 18650 battery, and it is ready to use—no soldering required.
• ​Compact & Travel-Ready: Ultra-lightweight design complete with a built-in keyring loop, making it easy to carry anywhere.
• ​Standard Connectivity: Features a universal USB Type-A output port for discharging, and a Micro-USB input port for recharging the internal battery.

​Technical Specifications:

• ​Compatible Battery: 1 x 18650 Lithium-ion Battery
• ​Output: 5V DC (via Standard USB)
• ​Input (Charging): 5V DC (via Micro-USB)
• ​Material: Durable, heat-resistant plastic casing

​⚠️ Please Note:

This product includes the enclosure and the internal charging board only. The 18650 battery is not included and must be purchased separately