Desk Lamp Upgrade: 18650 Battery DIY

If you find yourself in possession of surplus 18650 batteries without a designated use, consider repurposing them to enhance the functionality of a bedside lamp. Initiate the process by disassembling several 18650 batteries.

Subsequently, identify a compact desk lamp for modification.

Disassemble the lead-acid batteries within the lamp, removing all components from the switch circuit board except for the switch itself. Retaining the switch ensures complete power disconnection from the lamp.

Preserve the switch.

Modify the 223 single-key touchpad to operate in a low-level power-on and self-locking mode. Integrate a transistor, with 500mA current capacity deemed adequate.

Integrate a 4056 charging board.

Connect the batteries to a protection board. In case the charging module lacks an integrated protection board, source an external battery protection board.

The original petite lead-acid batteries in the desk lamp have limited longevity. With two 18650 batteries, anticipate several months of use without the need for recharging.

Upon completion of the transformation, a simple touch illuminates the lamp, while another touch extinguishes it. Experience the gratifying outcome of this modification.