iPhone 13 Iphone 13 slow and fast charging

[edora19]

I just realized, that the first 80% charge the phone gets on optimized charging, which charge very quickly, will drain pretty quickly compared to the 81%-100% which alone can last for like 4 hours to me, but after that drains fairly quickly, iam not saying this to complain about the drain, but id like to ask, does charging slowly mean that the charge will last longer? Ive been thinking about getting a 5W brick for a while now to use it instead of the 20W brick.

 

[RRC]

5w will help prolong battery health at the very least.