Depends how you use it. Normal use required daily charge.
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.
seven years
a panasonic triple a battery last about 4 hours nonstop.
1432 mah battery
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.
about 4 to 5 years
4 hours
3 hours
More that 4 hours
Most last 4-6 years
4 hours
Average Battery Life is about 4 Hrs.