battery charger vector

I started putting together a bank charger when i ordered the xm3k. I found 5 vector 2/6/10's on Amazon, & bought them. $140 shipped. When they came one didn't work. :( I'm still trying to resolve that with the company.. hopefull there won't be any major problems. It does give me a problem wiring them all up.. i can only do a 4 bank charger for now.