This is an Elinchrom Rapid Charger for the Ranger series of battery operated flash power packs. It is multi-voltage (115-230VAC) and ships with multi-socket adapters.
Recharging time to full power is three hours. The charger can charge a battery in the unit or externally.
New batteries require several cycles to reach full efficiency.
Reviews Elinchrom Rapid Charger for Ranger Power Pack (115-230VAC)