Yeah, getting the right plugs can be a PITA. Most places don't have a pic of the part, just the description, and it's easy to get the wrong end. When I made mine, Mike actually had the plugs I needed, he just doesn't have them specifically listed in the store.
I made my Y adaptor kinda long, but this is what it looks like.
That's a good idea. I want to make one like that. That way I can stick the batteries in a battery bunker while charging. What do people use as battery bunkers? I'm naughty and never watch my batteries while they are charging .
I use the liposack, which is why I made the wires kinda long. There is a cement bunker I've seen somewhere. Some people use the pottery-style flower pots. Basically anything that won't conduct electricity and could at least control a flame.