Am I harming the battery in any way?

[jbjints]

What I've been doing so far is recharging my battery when I get home from work with the phone on. Am I harming the battery? I do not want to get stuck with a dead phone. Some of my days are 15 hours long and I'd hate to have my phone die on me midday and this is why I charge it every night.

Am I doing harm to the battery?

 

[iFerd]

You are not harming the battery doing that.

 

[DPA]

Since the iPhone battery is a lithium battery, it is loosely recommended that you don't let the phone sit on the charger at 100% charge. It can hurt the battery but won't by much. You wouldn't notice anything in the, at most, few years you will probably have the phone.

David

 

[canuelo]

A lithium battery and it's life depends from the first 4 to 8 charges. It should be fully charged 4 to 8 times and each time let it drain down until the phone almost goes off. This will ensure a good battery life and it will last a long time. Many people are constantly charging and then when it is at 80% charging again this is not good practice.

 

[iFerd]

From the Wikipedia entry on lithium ion batteries:

Guidelines for prolonging Li-ion battery life

* Like many rechargeable batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a long time, they should be brought to a charge level of around 40%–60%
* Lithium-ion batteries should not be frequently fully discharged and recharged ("deep-cycled"), but this may be necessary after about every 30th recharge to recalibrate any electronic charge monitor (e.g. a battery meter). This allows the monitoring electronics to more accurately estimate battery charge.[25]
* Li-ion batteries should never be depleted to below their minimum voltage, 2.4 V to 3.0 V per cell.
* Li-ion batteries should be kept cool. Ideally they are stored in a refrigerator. Aging will take its toll much faster at high temperatures. The high temperatures found in cars cause lithium-ion batteries to degrade rapidly.
* Li-ion batteries should not be frozen [43] (most lithium-ion battery electrolytes freeze at approximately −40 °C; however, this is much colder than the lowest temperature reached by household freezers).
* Li-ion batteries should be bought only when needed, because the aging process begins as soon as the battery is manufactured.[25]
* When using a notebook computer running from fixed line power over extended periods, the battery should be removed,[44] and stored in a cool place so that it is not affected by the heat produced by the computer.

And, for more advice than anyone likely needs, in the iPhone forum here: https://forums.macrumors.com/threads/525741/

 

[Knowlege Bomb]

Since the iPhone battery is a lithium battery, it is loosely recommended that you don't let the phone sit on the charger at 100% charge. It can hurt the battery but won't by much. You wouldn't notice anything in the, at most, few years you will probably have the phone.

David

A lithium battery and it's life depends from the first 4 to 8 charges. It should be fully charged 4 to 8 times and each time let it drain down until the phone almost goes off. This will ensure a good battery life and it will last a long time. Many people are constantly charging and then when it is at 80% charging again this is not good practice.

False and false.

There is an excellent post about battery life and maintenance here in this forum. Very informative. Give it a look.