This is a rechargeable 18500/18650 battery for your lightsaber. High rate discharge. Short circuit, over charge and discharge protection. Lifetime is around 10years.
 
Pictures may differ from actual products.
 
• Xenopixel/Neopixel Battery : 3600mAh 10A, Neopixel Protected.
• RGBx/Stunt Battery : TR18650 3000mAh 3.7V.