Charging SLA batteries in series didn't work - why?
I had planned to charge each of my 3 SLA batteries individually, then when I got home last night (my inaugural commute!) I realized that there was a flaw in my plan...unless I wanted to get up at 3 am to switch the charger to a new battery, I wasn't going to get them all charged by morning. My only option was to wire them back up in series and charge them as a pack. I didn't know if it would work. Apparently it didn't. I don't have a working volt meter right now, so all I have to go on is the battery meter that came with my ampedbike kit, but it definitely wasn't at full charge. The pack probably got charged some, but I was hoping that after 8 hours at 1 amp they would have all been fully charged...especially since I had about a half charge in them when I got home.
So, did I do something wrong in my setup, or can you really not charge all three connected in series like that? Should I buy 2 more chargers so I can charge all 3 independently all night?