Simon, It is OK to do this from time to time, but unless you absolutely need to use every last minute your phone has in it this is not how you get the best life out of your iPhone battery. It is much better to plug it in when you get the 20% low battry warning or even if it is still t 30% and to charge it up again to 100% or even to 90% if you are in a hurry and can't finish charging it all the way. Running a battery down all the way and charging it up all the way was recommended for older NiCad rechargeable batteries which otherwise could develop a memory and might not have performed well over time, but the new Lithium Ion rechargeable batteries used in most modern devices don't like this as much and doing this is only necessary if you want to sort of reset/recalibrate the battery. If you want to learn more about how to get the most out of your iPhone battery, Google "how to get the most out of my iPhone battery" and you'll find lots of good articles.
If you want general but rather technical information about Lithium Ion batteries, go to this link: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries Here is a summary from this article pointing out the key facts about Lithium Ion batteries: Simple Guidelines for Charging Lithium-based Batteries • Turn off the device or disconnect the load on charge to allow the current to drop unhindered during saturation. A parasitic load confuses the charger. • Charge at a moderate temperature. Do not charge at freezing temperature. (See BU-410: Charging at High and Low Temperatures) • Lithium-ion does not need to be fully charged; a partial charge is better. • Not all chargers apply a full topping charge and the battery may not be fully charged when the “ready” signal appears; a 100 percent charge on a fuel gauge may be a lie. • Discontinue using charger and/or battery if the battery gets excessively warm. • Apply some charge to an empty battery before storing (40–50 percent SoC is ideal). Regards, Sieghard -- The following information is important for all members of the V iPhone list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your V iPhone list moderator is Mark Taylor and your owner is Cara Quinn - you can reach Cara at [email protected] The archives for this list can be searched at: http://www.mail-archive.com/[email protected]/ --- You received this message because you are subscribed to the Google Groups "VIPhone" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/viphone. For more options, visit https://groups.google.com/d/optout.
