Check Battery Status:
Use a multimeter to measure voltage and ensure the battery is still functional.
Remove Protection Circuit (Optional):
Only if needed for your specific DIY project. Handle with care.
Project Ideas:
LED Flashlight: Connect battery to an LED with a switch.
Portable Power Bank: Connect battery to a USB module for charging small devices.
Solar Energy Modules: Integrate old batteries into small-scale solar projects.
Low-Power Electronics: Power small sensors, fans, or motors for school or hobby projects.
Safety Precautions:
Never use swollen or damaged batteries.
Ensure the battery is fully discharged before handling.
Wear gloves and eye protection during all steps.
Keep batteries away from children and pets.
