Using these LED tealight candles is a breeze. First, check if the battery is installed (it comes pre - installed). To turn the candle on, simply flip the on/off switch at the bottom. You can place these candles anywhere you want to create a cozy atmosphere, like on a dining table or a mantel. When the light starts to dim, it's time to replace the battery. Just open the battery compartment at the bottom and swap out the old CR2032 Lithium battery with a new one. Remember, these candles are not waterproof, so keep them away from water to avoid damage. To clean, you can use a soft, dry cloth to wipe off any dust. Enjoy your beautiful, flameless candles!