Hyperion has made a big deal about lipo charging connection order - the AB-BA business, saying there is potential for damaging something inside the charger. They want you to connect main power leads 1st, then the balance connection. When finished - reverse order, disconn balance conn, then main power leads. This was detailed on the paperwork released with the v1.6 firmware revision for for 610i Net/DUO chargers. I know its not included in the manual for my 610iNet charger, so it might not be in the manuals for other models either.

They provided a "memory tip" - I have A pack, and Balancer. AB - BA.