Medical Definition of anaphylactic. : of, relating to, affected by, or causing anaphylaxis or anaphylactic shock.
Part of the Electronics glossary: Battery life is a measure of battery performance and longevity, which can be quantified in several ways: as run time on a full charge, as estimated by a manufacturer in milliampere hours, or as the number of charge cycles until the end of useful life.
The real killers of lithium batteries(the kind in your phone), is heat & frequent full discharge/recharge cycles. They have a design life of 3 ~ 5 years, & will last much longer if not subjected to frequent discharge cycles below 40% of capacity. Apple recommends you let your battery fully discharge/recharge once a month...every couple of months will be just fine. So, to maximize your battery life, charge your phone as often as possible & avoid high heat.