Using these LED tealight candles is a breeze. First, check if the CR2032 lithium battery is properly installed. If not, open the battery compartment at the bottom and insert the battery with the correct polarity. Then, simply turn the on/off switch at the bottom to the 'on' position to light up the candle. You'll get about 60 hours of light from one battery. When the light starts to dim, it's time to replace the battery. Just open the compartment and swap in a new CR2032. Keep in mind that these candles are not waterproof, so don't expose them to water. To clean, use a dry cloth to gently wipe the surface. That's it! Enjoy your beautiful flameless candles.