This Lithium-Ion battery is a lightweight battery dedicated to the Ranger Quadra system. With this smaller battery, the Ranger Quadra becomes even more portable than ever ! The Ranger Quadra now weighs a complete 1 kg (2.2 lbs.) less but offers up to 320 flashes at full power. Requires the RQ Li-Ion Charger (sold separately).Features : Lightweight just 0.73 kg, Small size, just 15 x 8.5 x 6.5 cm, No memory effect, Up to 320 flashes at full power, Precise battery status , Dicator by simple push button, 1h30 hours charging time to full power, Long life and robust, High security circuitry , Storage for spare part fuses on the battery top, Secure battery locking system. This product meets requirements of UN manual of test and criteria, Part III Subsection 38.3