Review: SysMax/NiteCore Intellicharger i4 V2 Charger

Can you opine on this thread and whether the charger could have malfunctioned?

I wonder if it’s possible for the charger to fail to switch over into pulse mode when the first battery is charged?
That would overcharge the second one. Any way the ordinary user can check on this feature working right?

Or did the guy just happen to have bad luck?