5s Lipo help!

[hoober]

A pack that is far out of balance is suspect and to me the charger is too.
I would check each cell with (the same voltmeter) to verify the charger's individual readings. If they are correct then trust it.

I'm very alarmed because the chances of a pack reading 3 cells exactly 4.2 and 2 cells exactly 3.8 are very nil. It may also be pertinent that the 2 3.8 are adjacent.

I guess another way to put it is: Ask the question Why did this happen? before the fix.