[quick Tip] Marking Sets of Eneloops

Some time ago I got second and third set of 4 AA eneloop batteries for my speedlight and got a problem: how to figure out which battery is from which set? (it's not good to mix charged and uncharged batteries)

Obvious solution: mark them! So I started to paint one of them with color marker on the side. "But it will tear off... and will dirt my fingers..." Then I spotted that their "discs" at the + end are almost white too... and it's a paper-like material there... the end result you can see on the photos. I really liked it ;)

Nothing big, but I think worth sharing :)