But wait, what’s that a TP4056 charging module doing in there? While its presence technically makes this device a battery charger, [Jasper] is actually using it for the onboard protection IC.

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 ...

TK discusses a portable power supply module known as a Battery Shield for Raspberry Pi and Arduino.

The new Battery Bank Charger helps reduce downtime on the job by ensuring that users always have fully recharged 18650 USB batteries at the ready.

18650 Things To Do With An Old Laptop Battery If you’ve owned a laptop for a few years, you’ve no doubt encountered the problem that the battery eventually loses its ability to hold a charge.

Tesla’s battery supplier Panasonic is considering switching 18650 battery cell production lines, which currently supply cells for Tesla’s Model S and Model X, to 2170 cell production ...

The system consists of battery modules that use 18650-format cylindrical lithium-ion cells, the same cells used in the Tesla Model S and Model X.

A 16-year-old boy named Thomas invented a cell phone bike charger using an old CPU fan and you can make it for only $5.