Charging 2 LiPo's at once

[Superbasher]

Hi everybody,
Been browsing around for some information on charging 2 2s LiPo's at once (I have an E-Revo and I'm impatient you see lol). I've got an Ansmann xBase charger (charges up to 5 cells so it will be okay) and a Hyperion LBA10 balancer. Now I'm sure I read a topic on charging 2 batteries at once but I cannot find it, so does anyone know where it is, or could advise me? As I'm guessing I would need to charge the batteries in series, and balance both using a custom 2 x 2s to 4s plug?
Regards,
Matt