Hey guys! I'm wondering if it's time to replace my batteries. I charged my Samsung 25Rs just now to full charge, and left them to sit out for a while to cool off, about 30 or 40 minutes. When I came back to em, they were reading 4.12v, 4.18v, and 4.14v. Is it time to get rid of em? And is there any danger to continue using them? Just wanna be sure before throwing em and buying new ones. Thanks guys!