Is it harmful for the battery to recharge it using a power bank ?

"It's a linear path from charger to battery to device. So, even with power applied from a charging source, you are still drawing 100% of the consumed power for the iPhone from the battery."

No. A battery doesn't have separate input and output connections. Power can't flow though it. It can go in or out, but not both at the same time.

If you are using a phone while it is charging, some of the charger's power goes to the phone circuitry, the rest goes into the battery. No power comes out of the battery.

If you are not using the phone while it's charging, all the power goes into the battery.

Alionell joseph wrote:

IS it harmful for the battery to recharge it using a power bank

No, it's not harmful.

Things that are bad for a lithium ion battery: draining it completely and leaving it that way, leaving it in a hot car on a summer's day.

It is NOT harmful to use the phone for any activity while it is charging. I don't know where you came up with this idea, but it has no basis in fact. It will get warmer, but the phone has sophisticated temperature management, and if heats to the point where it might exceed the phone's specs it will shut down and display an "overtemperature" message. If this doesn't happen you are not doing any harm to the phone or the battery.

If anything it is BETTER to have the phone plugged in if you are using an app that has high energy demands, because that way the external power source will provide that energy instead of the battery, which reduces the total number of charge cycles. The life of a battery is measured in charge cycles, so if you run the battery down with your game, then recharge it, you have used up one of the finite number of charge cycles of the battery's life. If instead you leave it plugged in your USB power source will power the game rather than the battery, and you save a charge cycle.

Hey, i know it is so important that you can charge your phone when outside without a lock yourself onto a wall plug. and your worry is totally understandable since i do saw a iPhone5s got damaged by using fake charger and cable.

If your car charge came with your car, its usually will be alright whatever that is a USB plug or a lightning slot to insert your phone cuz they usually are well built. just always to recommended to use a Apple certified cable if that is a USB plug.

If your trying to use that type of car charger that insert into cigarette lighter, make sure your using the brand that is reported reliable, instead of using those cheapo ones which is possible to cause damage to some part of your phone.

Power Bank itself are also will be totally ok to go as long as your using the reliable brand and right cable.

Jason Nvm

Lawrence Finch wrote:

It is NOT harmful to use the phone for any activity while it is charging. I don't know where you came up with this idea, but it has no basis in fact. It will get warmer, but the phone has sophisticated temperature management, and if heats to the point where it might exceed the phone's specs it will shut down and display an "overtemperature" message. If this doesn't happen you are not doing any harm to the phone or the battery.

If anything it is BETTER to have the phone plugged in if you are using an app that has high energy demands, because that way the external power source will provide that energy instead of the battery, which reduces the total number of charge cycles. The life of a battery is measured in charge cycles, so if you run the battery down with your game, then recharge it, you have used up one of the finite number of charge cycles of the battery's life. If instead you leave it plugged in your USB power source will power the game rather than the battery, and you save a charge cycle.

Wrong.

From http://batteryuniversity.com/learn/article/do_and_dont_battery_table

Read the last part about Lithium-ion batteries. Heavy loads on the batteries make them HOT. Prolonging the charging time and keeping the battery hot while charging is BAD for the battery. A large portion of what we do with our phones won't hurt the battery if we're charging it while it's in use. But if you are charging the battery for an extended period of time, and the battery is hot while you're charging it, you are doing damage to your battery.

Lawrence Finch wrote:

You are misinterpreting what you read and posted. If the phone is connected to a power source when you are using it most of the energy from the power source is not charging the battery, it is running the application. And the battery is not draining, so it won't get hot. If anything the battery gets hotter charging with no load on the device when it is charged. The phone may get hotter overall running an application, but that heat is dissipated across the entire phone, not just the battery. And the word "cool" is subjective and is not a measurement; as I said, the phone is designed to protect itself; it will always remain below a temperature that could damage the battery or anything else in the phone. The operating range is 0ºC to 35ºC, so in this case up to 35º C is "cool."

No, I am not.

When you connect an iPhone to a charging source, you are charging the battery. When you are running an iPhone, you are consuming power from the battery. That's it, always and forever. It's a linear path from charger to battery to device. So, even with power applied from a charging source, you are still drawing 100% of the consumed power for the iPhone from the battery. And, since you're charging at the same time, you're charging the battery "back up" from the power that was being used.

If your draw rate of power is reasonably close to the rate at which the charger is supplying power, you are A) causing the battery to be on the high end of the temperature range and B) charging the battery while it's hot. The third thing going on is that you are significantly extending the period of time for charging. This is BAD for the battery.

I've stated this twice already, but I will say it again... Simple things like making a phone call do not cause high power drain from the battery and will not impact the battery negatively if you're using it in this way while charging. If you are doing something with the device that causes a high drain on the battery (something that would cause the battery to be warm simply from use and would drain the battery down much faster than normal), AND you are charging while this is going on, you are causing negative impact on the battery's overall health / lifespan.

You are misinterpreting what you read and posted. If the phone is connected to a power source when you are using it most of the energy from the power source is not charging the battery, it is running the application. And the battery is not draining, so it won't get hot. If anything the battery gets hotter charging with no load on the device when it is charged. The phone may get hotter overall running an application, but that heat is dissipated across the entire phone, not just the battery. And the word "cool" is subjective and is not a measurement; as I said, the phone is designed to protect itself; it will always remain below a temperature that could damage the battery or anything else in the phone. The operating range is 0ºC to 35ºC, so in this case up to 35º C is "cool."

Not sure about a power bank but I charge my iPhone 6 in my car all the time without any issues.

Add "using the device while it's recharging" to the list of things that are bad. I don't mean being on the phone while it's charging, I mean things like running games and CPU-intensive apps.

And I will state again that you are wrong, but we will have to agree to disagree. My 2 degrees in Electrical Engineering not withstanding.

I have one of those myself, but yes, we will agree to disagree.

ember1205 wrote:

Add "using the device while it's recharging" to the list of things that are bad. I don't mean being on the phone while it's charging, I mean things like running games and CPU-intensive apps.

No.

Philly_Phan wrote:

ember1205 wrote:

Add "using the device while it's recharging" to the list of things that are bad. I don't mean being on the phone while it's charging, I mean things like running games and CPU-intensive apps.

No.

If you are running a process on the device that puts a heavy load on the CPU, it will draw a fair amount of power and will, by itself, cause the battery to get warm / hot. If you are charging at the same time, you are putting the battery in a situation where it will be very warm while it is charging for an extended period of time. This is bad for the battery.

Again - I'm not talking about something like being on a phone call while it's charging. That isn't a significant enough draw on the battery to change the internal temp or overall duration of time required to charge. I'm talking about a situation where a normal one hour of charge time to top off your device turns into 8 or 10 hours of charge time because the load on the battery is so high from running processes.

Alionell joseph wrote:

IS it harmful for the battery to recharge it using a power bank or using a car charger ?

Just be certain to use a cable approved by Apple.

.