that model is a little slow to charge (which is better for your
batteries)
do not charge
batteries when you are not at home or are sleeping
remove batteries when charging is complete (do NOT leave in charger for days on end)
also get some little plastic battery boxes to keep your batteries in (or any small plastic craft organizer will work)
I personally use the nitecore intellicharger now as my main charger because it is a little quicker charger
and welcome to the ECF