[BrianG]

There's a similar thread about this and it appears to be normal. In older Hyperion charger models, the sequence you noted was something only found in NiMH auto mode (not setting the cell count and charge rate).

If I was to guess, I think it's just another layer of protection from the user accidentally using charge current settings that are too high. After all, how is the charger going to know you aren't trying to set a 10A current on a 1000mAh lipo pack? It can do a pretty good job of making sure you set the cell count right, providing you are putting a relatively depleted pack on it.

When you charge CC, the charger has to output a voltage that will generate your desired current, and the voltage has to go higher and higher for higher currents. When you remove the charge current, the voltage dips back down. The speed and amount that the voltage drifts back down tells the charger if the current selected is appropriate for that specific pack. If the voltage doesn't change too much, your settings are ok. If the voltage dips back down quite a lot, chances are the current setting is too high. That's how I believe it works anyway from watching how mine works...