Fun Facts about the name Cortana. How many people with the first name Cortana have been born in the United States? From 1880 to 2015, the Social Security Administration has recorded 116 babies born with the first name Cortana in the United States.
Full Answer. Lithium batteries have a longer shelf life than alkaline batteries. Rechargeable batteries are also available. With normal recharging, they can last up to 10 years under normal use. Rechargeable batteries are recommended for devices that are used on a consistent basis, such as game controllers.
To extend your battery life, (a) avoid deep discharges, and (b) don't expose them to extremes of heat, cold, or humidity. Unfortunately there is not much you can do to avoid deep-discharging your UPS other than living in an area where power outages are few and short.