By taking a 3D printed design intended to attach a TP4056 module to the end of an 18650 cell and combining it with an ESP8266 firmware that turns the powerful microcontroller into a WiFi repeater ...

French researchers have announced a prototype of an 18650 sodium-ion battery. If you’ve bought a powerful LED flashlight, a rechargeable battery pack, or a–ahem–stronger than usual LASER ...

A kit contains two 18650 rechargeable batteries (3.7V, 3400mAh, li-ion, pointed head, no protective board) and a charger (USB powered). Click the green "Clone or download" button, then click "Download ...

In this project, we explore the life cycle of 26 battery packs, each consisting of two 18650 rechargeable lithium-ion batteries. These batteries are integral to various applications, including ...