[MetalMan]

You could charge them in parallel, but to balance them you need 2 balancers. However, you can't do this very well using the Hyperion balancer since it goes between the charger and the battery (differences in balance will throw things off). Even with 2 normal balancers (connect to taps only), this wouldn't be an efficient charging setup. Or, you could just charge both packs separately.
Another option would be to use 2 balancers and charge the packs in series. This would be a very good way to do it, as you could still use 2 Hyperion balancers (they'd be hooked up to a series connector). This would be an efficient charging setup, if your charger can charge as many cells in series as are in 2 of these Polyquest packs.