I was looking at some chargers like this which you wouldn't even need to do any cutting, they are already setup to connect to your battery connections. No worries about stuff rattling off, etc.
http://www.promarine...roductNum=42008
Only issue with this method of hard wiring is having to un mount the lines to the batteries to charge them seperatly. I have had to charge them this way before to make them both fully charged at the same levels .So this is just a time issue really if you needed/wanted to charge this way.
My clips have not rattled off yet, but I do keep a eye on them.