{"id":4917,"date":"2020-05-06T07:00:00","date_gmt":"2020-05-06T11:00:00","guid":{"rendered":"https:\/\/langa.com\/?p=4917"},"modified":"2020-05-02T13:18:20","modified_gmt":"2020-05-02T17:18:20","slug":"is-it-safe-to-leave-a-lithium-ion-device-in-an-air-conditioned-room-whose-ac-temperature-is-set-at-around-20-degrees-c","status":"publish","type":"post","link":"https:\/\/langa.com\/index.php\/2020\/05\/06\/is-it-safe-to-leave-a-lithium-ion-device-in-an-air-conditioned-room-whose-ac-temperature-is-set-at-around-20-degrees-c\/","title":{"rendered":"“Is it safe to leave a lithium-ion device in an air-conditioned room whose AC temperature is set at around 20 degrees C?”"},"content":{"rendered":"\n

(Answer requested by Evan Zanark)<\/small><\/em><\/p>\n\n\n\n

Sure. In fact, one of the oddities of lithium-ion cells and batteries is that they work best at the same temperatures where humans work best: Room temperature — 20C\/68F — is great for both humans and Li-ion!<\/strong><\/p>\n\n\n\n

But once you get up to around 40C\/104F, both humans and Li-ion batteries will begin to suffer from the heat; performance will do down.<\/p>\n\n\n\n

Likewise, once you get down to around 5C\/40F, humans and Li-ion batteries will suffer cold-reduced performance.<\/p>\n\n\n\n

So, the rule of thumb is simple:<\/strong> Any temperature that feels comfortable to an unprotected human will also be fine for a normal Li-ion device!<\/p>\n\n\n\n

Permalink: https:\/\/langa.com\/?p=4917<\/a><\/strong><\/em><\/p>\n\n\n\n

\"[seperator]\"<\/figure><\/div>\n\n\n\n

COMMENT \/ QUESTION<\/strong> on THIS ITEM?<\/strong> See the<\/em> Comment box<\/strong> at bottom of this page!<\/em>

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(Want free notification of new content? Click<\/em> <\/strong>here<\/a><\/b>!)<\/p>\n","protected":false},"excerpt":{"rendered":"

(Answer requested by Evan Zanark) Sure. In fact, one of the oddities of lithium-ion cells and batteries is that they work best at the same temperatures where humans work best: Room temperature — 20C\/68F — is great for both humans and Li-ion! But once you get up to around 40C\/104F, both humans and Li-ion batteries…<\/p>\n","protected":false},"author":1,"featured_media":2511,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[7,30,21,12],"tags":[],"class_list":["post-4917","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-reader-asks","category-hardware","category-misc","category-smartphones"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/04\/W20150813-TS-BatteryFromTop.png?fit=410%2C403&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paaiox-1hj","jetpack-related-posts":[{"id":2505,"url":"https:\/\/langa.com\/index.php\/2019\/04\/08\/how-to-make-lithium-ion-batteries-last-for-years\/","url_meta":{"origin":4917,"position":0},"title":"How to make lithium-ion batteries last for years","author":"Fred Langa","date":"2019-04-08","format":false,"excerpt":"The older column reprinted below was originally published in the August 13, 2015 , Windows Secrets newsletter. This older content supplements brand-new content posted today (April 8, 2019) in the AskWoody Plus newsletter, available here. An upcoming column will update and refine the information below. (I\u2019m reprinting selected Windows Secrets\u2026","rel":"","context":"In "AskWoody Plus"","block_context":{"text":"AskWoody Plus","link":"https:\/\/langa.com\/index.php\/category\/askwoody-plus\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/04\/W20150813-TS-BatteryFromTop.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":2960,"url":"https:\/\/langa.com\/index.php\/2019\/06\/20\/what-is-the-fastest-and-safest-method-for-putting-out-a-lithium-ion-battery-fire\/","url_meta":{"origin":4917,"position":1},"title":"“What is the fastest and safest method for putting out a lithium-ion battery fire?”","author":"Fred Langa","date":"2019-06-20","format":false,"excerpt":"(Answer requested by Richard Janezic) LI-ion batteries are considered Class B (flammable liquids\/gases) fire hazards (info). LI-ion fires are ferocious, and the gases are nasty. If there's a fire, unplug the device (if plugged in), call the fire department, and then use an ABC- or BC-rated fire extinguisher (info) to\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/YuKF8XfCVKQ\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3656,"url":"https:\/\/langa.com\/index.php\/2019\/10\/29\/how-long-does-it-take-for-a-li-ion-battery-to-degrade\/","url_meta":{"origin":4917,"position":2},"title":"“How long does it take for a Li-ion battery to degrade?”","author":"Fred Langa","date":"2019-10-29","format":false,"excerpt":"(Answer requested by Jake Timchak) Degrade by how much? Lithium-ion batteries are \u201cconsumables\u201d that inevitably get used up, even just sitting on the shelf. Li-ion batteries actually start degrading (very slowly) the moment they\u2019re assembled at the factory. Each discharge\/recharge cycle then accelerates the irreversible chemical changes in the battery,\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2980,"url":"https:\/\/langa.com\/index.php\/2019\/06\/21\/update-on-lithium-ion-fire-suppression-in-small-devices\/","url_meta":{"origin":4917,"position":3},"title":"Update on Lithium-ion fire suppression in small devices","author":"Fred Langa","date":"2019-06-21","format":false,"excerpt":"After reading \"What is the fastest and safest method for putting out a lithium-ion battery fire?\", frequent correspondent \"App\" wrote: According to the FAA, water is not a last resort\u2026it\u2019s your first choice, because you don\u2019t only want to put the fire out, you want to cool it, too. So\u2026","rel":"","context":"In "Reader Comment"","block_context":{"text":"Reader Comment","link":"https:\/\/langa.com\/index.php\/category\/reader-comment\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/06\/20190621_103107.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":3551,"url":"https:\/\/langa.com\/index.php\/2019\/10\/08\/is-there-any-way-to-revive-an-over-discharged-li-ion-18650-battery\/","url_meta":{"origin":4917,"position":4},"title":"“Is there any way to revive an over-discharged Li-Ion 18650 battery?”","author":"Fred Langa","date":"2019-10-08","format":false,"excerpt":"Not a good idea. The protective circuitry (in the Li-ion battery or in the device that the battery powers) is designed to prevent dangerous over- and undercharging, which can cause the battery to overheat and catch fire. (Remember all those hoverboard fires a couple years ago? That's what you get\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/langa.com\/wp-content\/uploads\/2019\/10\/18650-batteries.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1599,"url":"https:\/\/langa.com\/index.php\/2019\/01\/12\/a-reader-asks-can-you-take-your-electric-assisted-bicycle-with-you-on-a-train-or-a-plane-in-the-united-states\/","url_meta":{"origin":4917,"position":5},"title":"A reader asks: “Can you take your electric assisted bicycle with you on a train or a plane in the United States?”","author":"Fred Langa","date":"2019-01-12","format":false,"excerpt":"If you can remove the batteries, then an e-bike is just like any other bike, and is subject to the same rules. A battery-less, totally inert e-bike can be shipped by almost any means. Li-ion batteries, if damaged or defective, can cause a very serious, very energetic chemical fire. That's\u2026","rel":"","context":"In "A reader asks..."","block_context":{"text":"A reader asks...","link":"https:\/\/langa.com\/index.php\/category\/a-reader-asks\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_likes_enabled":false,"_links":{"self":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/4917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/comments?post=4917"}],"version-history":[{"count":3,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/4917\/revisions"}],"predecessor-version":[{"id":4920,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/posts\/4917\/revisions\/4920"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/media\/2511"}],"wp:attachment":[{"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/media?parent=4917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/categories?post=4917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/langa.com\/index.php\/wp-json\/wp\/v2\/tags?post=4917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}