That reminds me... check out the charge cut-off... 4.2V +/- 0.5V... not 0.05V?
It's 4.2 +-0.05v. However if you always charge to 4.25v, you will shorten battery life.
FYI, they don't start to get dangerous until they reach 4.30v, there is a 0.05v buffer in the specification.