Dorcy Rechargeable Power Bank Flashlight Rechargeable flashlight with USB output charging for on the go power USB output capabilities to charge cell phones or tablets Lithium Ion Battery provides hours of flashlight use,and lithium Ion batteries do not expire. High/med/low, flashing and SOS settings that you can adjust depending on your environment Comes with a 1-year limited warranty,the date printed on the battery is manufacturer date and not the expiration date.