You don't, it's part of the device. If you need it replaced you can go into Apple.
take to a iphone store
The iphone 4 does have a removable battery, but it is difficult to take out and not a typical cell phone battery that you can just pop in and out. It is possible to remove the battery from an iphone 4, but not an easy process. It requires you to pretty much disassemble the whole phone.
The battery should drain slowly on an iPhone 5s. If the battery was charged correctly the first time. It should take around 10 hours to drain.
No, the iPhone 5c battery is not the same as the iPhone 4 battery. The iPhone 5c uses a different battery model with a higher capacity compared to the iPhone 4. Additionally, the physical dimensions and connectors of the batteries are also different, making them incompatible with each other.
Replace it when it will no longer take or hold a charge.
The Apple iPhone 6 Plus has a better battery life than the Apple iPhone 6.
a battery
No one cares
1432 mah battery
It can take up to 30 minutes depending on how depleted the battery is.
Not possible.
Yes, you can charge your iPhone when it has a good amount of battery. However, you should avoid charging the phone until it is low in battery, to prolong the battery life.