The PROPAC batteries delivers energy for up to two PROFILUX PLUS studio flashes, making any combination of units with flash outputs from 200 to 1600 Ws possible. A big advantage compared to smilier battery systems is that the PROPAC units do not require to be monitored by a built-in thermal cut-out. Uninterrupted flash firing is therefore possible - even when in extreme use. A PROPAC can deliver its full capacity of flashes without having to switch off due to overheating after just 50 or 100 flashes. Its role as a pure power source results in the consistency of recycling times and flash durations of the connected PROFILUX PLUS units. The "Auto-Off" function helps to conserve battery power by automatically turning off the modeling light if the unit is idle for 15 seconds, and is turned back on as soon as the next flash is fired. The compact PROPAC 1 delivers up to 300 flashes in combination with a PROFILUX PLUS 800 studio flash at full output. Thousands of flashes are possible with the use of a PROFILUX PLUS 200 at lower output. Short recharging time of about 4 hours rounds off the PROPAC 1 versatility. Extended charging of 10 hours or more increase the batteries capacity by an extra 25%. One lamp socket also serves as the charger connection for the 100-260 V multi-voltage charger (PACLA). Specifications + Up to 3200 flashes per charge+ Up to 1600 Ws obtainable flash power+ 2 lamp sockets (splash-water proof)+ Modeling light "Auto-Off" function to conserve energy+ Long lasting service life Delivery Contents + PROPAC 2 battery pack (PAC 2) Technical Data + Flash Power, Ws (in combination with 2 PROPLUS units) 400 / 600 / 800 / 1000 / 1200 / 1600 + Power Supply, V 140 + Number of Flashes, with one PROPLUS 2 3200 + Number of Flashes, with one PROPLUS 4 1600 + Number of Flashes, with one PROPLUS 8 800 + Recycling Time at max. output with PROPLUS 2, s 0.9 + Recycling Time at max. output with PROPLUS 4, s 1.8