Experience uninterrupted lightsaber action with our External Battery Charger - the perfect solution to keep the force flowing! Charge 14500, 18650, and 21700 batteries with ease, ensuring you always have a fully charged battery ready. Featuring essential safety features like reverse battery protection and overload protection, your saber and batteries are in good hands. Never miss a moment of epic dueling - power up with ES Sabers' External Battery Charger today!