My new charger shows this error message when I disconect the lipo battery, "BALANCER VOLTAGE TOO HIGH" and has a continuos beep. This means I have to disconect the charger from the power supply when there is no battery pluged in.

Anyone know why?

If you are using the Orion style plug it will do this. There is no fix for it other than when you finish charging, unplug the balance connector from the battery, then unplug the pos/neg bullet plugs from the battery, then unplug the balance connector from the charger. I have been communicating with Hyperion on this and this is the only fix to get it to reset with this style plug. If it is doing it with the other type of plugs there must be something wrong with the charger.

Thanks, thats what MaxAmps told me yesterday.