{"id":3686,"date":"2019-11-01T07:00:15","date_gmt":"2019-11-01T11:00:15","guid":{"rendered":"https:\/\/langa.com\/?p=3686"},"modified":"2019-10-31T14:01:09","modified_gmt":"2019-10-31T18:01:09","slug":"if-i-charge-my-mobile-phone-from-a-laptop-will-the-battery-charge-last-longer","status":"publish","type":"post","link":"https:\/\/langa.com\/index.php\/2019\/11\/01\/if-i-charge-my-mobile-phone-from-a-laptop-will-the-battery-charge-last-longer\/","title":{"rendered":"“If I charge my mobile phone from a laptop, will the battery charge last longer?”"},"content":{"rendered":"\n

(Answer requested by Dinju Sebastian)<\/small><\/em><\/p>\n\n\n\n

No. Amps are amps; volts are volts; watts are watts. Doesn’t matter where they come from.<\/p>\n\n\n\n

Your phone treats your PC-provided power as just another recharge source. There are no unusual effects on the phone\u2019s battery from PC-delivered power, as compared to power delivered by a wall-adaptor (or any other source) with the same electrical ratings.<\/p>\n\n\n\n

On the other end of the recharge cable, your PC treats your phone as just another electrical load, with the same effects as any other load drawing the same voltage, amperage, etc. <\/p>\n\n\n\n

If your PC is plugged in, the smartphone\u2019s additional power-draw is mostly irrelevant to the PC. If the PC is running on batteries, its battery charge will decrease by an amount roughly equivalent to the amount of charge delivered to the phone, plus some inevitable losses along the way (heat, mostly).<\/p>\n\n\n\n

In short: Amps are amps; volts are volts; watts are watts. Doesn’t matter where they come from.<\/p>\n\n\n\n

Permalink: https:\/\/langa.com\/?p=3686<\/a><\/strong><\/em><\/p>\n\n\n\n

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(Answer requested by Dinju Sebastian) No. Amps are amps; volts are volts; watts are watts. Doesn’t matter where they come from. Your phone treats your PC-provided power as just another recharge source. There are no unusual effects on the phone\u2019s battery from PC-delivered power, as compared to power delivered by a wall-adaptor (or any other…<\/p>\n","protected":false},"author":1,"featured_media":0,"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":[7,30,12],"tags":[],"class_list":["post-3686","post","type-post","status-publish","format-standard","hentry","category-a-reader-asks","category-hardware","category-smartphones"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paaiox-Xs","jetpack-related-posts":[{"id":1376,"url":"https:\/\/langa.com\/index.php\/2018\/12\/18\/a-reader-asks-how-much-does-charging-a-mobile-phone-cost\/","url_meta":{"origin":3686,"position":0},"title":"A reader asks: “How much does charging a mobile phone cost?”","author":"Fred Langa","date":"2018-12-18","format":false,"excerpt":"Not much. In fact, probably less than a penny! You can roughly guesstimate it for yourself this way: Note that electricity is usually sold by the kiloWatt hour (kWh) --- 1000 Watts delivered for one hour. If you know the Wattage of your phone charger, and how long it runs,\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":1721,"url":"https:\/\/langa.com\/index.php\/2019\/01\/25\/a-reader-asks-my-laptop-only-charges-when-it-is-plugged-in-while-turned-off-if-turned-on-it-runs-but-wont-charge-what-do-i-do\/","url_meta":{"origin":3686,"position":1},"title":"A reader asks: “My laptop only charges when it is plugged in while turned off. If turned on, it runs but won’t charge. What do I do?”","author":"Fred Langa","date":"2019-01-25","format":false,"excerpt":"If this is a new problem --- if the laptop used to charge normally --- your battery is likely showing its age. It's now requiring more power to recharge, and is overtaxing the power supply, leaving you with an either-or choice --- charge the battery or run the PC. A\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":4975,"url":"https:\/\/langa.com\/index.php\/2020\/05\/14\/computers-have-an-internal-battery-for-the-clock-to-keep-it-running-even-when-the-computer-has-no-power-why-do-stoves-not-have-this-feature\/","url_meta":{"origin":3686,"position":2},"title":"“Computers have an internal battery for the clock to keep it running even when the computer has no power. Why do stoves not have this feature?”","author":"Fred Langa","date":"2020-05-14","format":false,"excerpt":"(Answer requested by Reese Horn) The batteries in PC aren't just for the internal clock; that tiny trickle of power also helps the turned-off PC to \"remember\" some basic information about its hardware components, so it will know what to do right away, when the power comes on. If the\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":2505,"url":"https:\/\/langa.com\/index.php\/2019\/04\/08\/how-to-make-lithium-ion-batteries-last-for-years\/","url_meta":{"origin":3686,"position":3},"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":1214,"url":"https:\/\/langa.com\/index.php\/2018\/12\/03\/a-reader-asks-why-wont-my-laptop-charge-when-its-running-it-only-charges-when-its-off\/","url_meta":{"origin":3686,"position":4},"title":"A reader asks: Why won’t my laptop charge when it’s running? It only charges when it’s off.","author":"Fred Langa","date":"2018-12-03","format":false,"excerpt":"Q*: \"How do I fix my laptop? When it is turned on and I plug it in, it will not charge, and will only charge when it is plugged in while turned off. What's going on?\" A: The most common cause for this is an aging battery that draws too\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":5117,"url":"https:\/\/langa.com\/index.php\/2020\/06\/02\/why-does-a-device-with-no-battery-have-enough-battery-to-show-me-there-is-no-battery-yet-does-not-let-me-do-what-i-want-to\/","url_meta":{"origin":3686,"position":5},"title":"“Why does a device with no battery have enough battery to show me there is no battery, yet does not let me do what I want to?”","author":"Fred Langa","date":"2020-06-02","format":false,"excerpt":"(Questioner requested anonymity) On Li-ion consumer devices, \"0% battery\u201d doesn't mean \u201cno energy\u201d but rather \u201cno energy available for anything except to wait for the next recharge.\u201d That's because Li-ion batteries require careful regulation of volts, amps, and temperature. 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