2pcs Ultralife UBP001 3.7V 1.75AhUltralife UBP001 Battery Pack with Flying LeadsEasily Connect To Vital DevicesThe Ultralife UBP001 is ready to power with a reliable capacity and seamless connection. It has both 3.7 Volts and a 1750mAh capacity, offering dependable energy that lasts long on a single charge. With Lithium-ion chemistry, this Ultralife battery pack has both over voltage and over current protection as well as 500+ total charge cycles, one you can count on long-term. When connecting with the 24 AWG flying leads you have mountable power for portable electronics, tracking applications, or medical equipment.