The elf bar can be charged many times, as long as the battery is in good condition. However, it's recommended that you charge it at least once every two weeks to ensure it's always fully charged. If you want to maximize the life of your elf bar, make sure you store it in a cool and dry place, away from direct sunlight or other sources of heat. Additionally, avoid overcharging the elf bar, as this can damage the battery and shorten its lifespan.