MBA 13" mid 2012, 33% Battery life/614 cycles, how is this even possible?

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so, i've had battery life problems quite long time now, , thought normal happens overtime, apparently battery life supposed above 80% @ point so...

plan replaced in apple store sometime next week, understand did wrong first, dont have change battery anytime again...

few clues : did used lot play videogames make overheat, 4-5 months period of time on course of last 26 months, when didn't have pc me.

spent 5 month in argentina, needed adapter battery charger (french mba, believe electricity norms same in in argentina). did kill battery charger after month, , had buy new 1 there. use 80w charger mba (you wouldn't believe how hard find one, , how expensive related purchasing power of argentinians, digress), sold me official one, can't sure guess... can keep charger, or should buy new 1 may cause killing battery?
 

other people can chime in sounds there lot of variables usage. heat number 1 killer of batteries, it's no surprise have reduced capacity if play game heats cpu/gpu runs fans 6,000 heats battery compartment. on old 2007 15" mbp windows boot camp (removable battery) used avid gamer , replace batteries once year.

also, i'm sure non-legit chargers , changes in current can have effect on battery , charge current manager. smc controller.

fixed. watch how use it. should fine.
 


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