How come my mobile phone recharged in 5 minutes?

[PIT2]

How come my mobile phone recharged in 5 minutes?

On monday i had accidently left my phone on all day, and the batteries were almost empty. Then i forgot to recharge it in the evening, and the next morning was only able to do so for 5 minutes. When i unplugged it after 5 minutes, the batteries were fully charged and they have been so for the last 3 days!

How can this be possible?

 

[DaveC426913]

The indicator lies. It may not be fully charged.

 

[Kuno]

I'm sure the indicator is lying, how long have you had the phone?

Lithium Ion batteries tend to go bad after a certain amount of cycles. My old phone used to be like that too after having it for a while.

 

[PIT2]

Ive had the phone for 5 years maybe. Its still lying to me and saying its completely charged. I guess i should recharge but I am curious if it will keep working without it.

 

[Gib Z]

I don't think the problem was with the indicator lying that it was full, but that it was empty! If it can run on 5mins charge for 3 days, then the indicator falsely told you the batteries were low, or you have a US Army hyper-Lithium Ion battery for your big chunk of a phone :)

 

[Stevedye56]

I was just going to say that your battery was dead but I didnt see Gib Z's post. When my laptop battery was dying it would charge faster and faster until eventually when I tried to take out the power cord, it would just turn off. I'd put my money on what Gib Z said.