[AC Question]

I had tried to count the time but I mess up

[belodion]

Most phones charge from about 40% - try not to discharge to a lower percentage than that - to 100% in an hour or two. If yours is taking longer, the charge lead or USB lead may be bad.

There are those who say that it's best not to charge higher than 80%, so you may want to research and decide for yourself about that.

[Rukbat]

That "best not to charge higher than 80%" isn't agreed to by people who should know about batteries - Cadex. See Battery University - How to Prolong Lithium-based Batteries. (You can't charge above 100% - the phone's charging circuit cuts the charge off at that point [even though it still shows that the phone is charging - the phone is, but it's not getting to the battery, it's just creating a tiny bit of heat]. But if the phone is sitting for days, the battery self-discharges a bit - and the battery gets topped off.)