Just for the record, you can't balance charge packs in parallel no matter how verbose or fancy the text may be on the manufacturers site.
The only way to balance charge more than one pack is to have individual balance connectors, like a multi charger such as the Futaba X4 has.
Yu can charge a lipo without balancing a few times at least before rebalancing if you're in a pinch but I wouldn't even parallel charge 2 or more lipos without balancing either, it's just too dangerous.
People are getting more and more blasé about charging lipos lately.