Care and feed­ing of bat­ter­ies

Mac Format - - APPLE TALK -

I hear a lot of con­flict­ing ad­vice about lap­top bat­ter­ies. Some say I should keep it topped up at 100% and then let it drain all the way down once a month. Oth­ers say that charg­ing it once a day is bet­ter. Who is right? I use my MacBook Pro as my main com­puter and it is nor­mally plugged into the mains on my desk. But I want to have the op­tion of run­ning from bat­tery oc­ca­sion­ally, such as on hol­i­day. Ge­orge Peake Lithium-ion bat­ter­ies don’t like ex­tremes. They don’t like get­ting very cold or very hot, or spend­ing too much time in a com­pletely flat or com­pletely charged state. In­deed, Ap­ple’s ad­vice at ap­ple.com/bat­ter­ies used to say of its lithium-ion poly­mer bat­ter­ies: “If you don’t use your de­vice of­ten, be sure to com­plete a charge cy­cle at least once a month”. That ex­act text no longer fea­tures on the site, but Ap­ple still rec­om­mends charg­ing your MacBook to 50% if it’s go­ing to be stored long-term.

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