Just Do It
You can't go wrong with a bank type charger. Then do yourself another favor and get one of those fancy fillers and use distilled water. I got mine from Cabella's. It uses a series of tubes and automatic shut offs for each cell. I was really suffering battery whoas and disappointments before I started doing this.
DP
I am a heterosexual male. 2 Chronicles 7:14
"If my people who are called by My name will humble themselves and pray and seek My face and turn from their wicked ways, then I will hear from Heaven and will forgive their sin and heal their land."