Get up to 100 and 140 flashes from your older Hensel Porty power pack at fast and slow recycles, respectively, with the Hensel Battery Pack. It serves as a reliable replacement or auxiliary battery for the power pack. You can recharge this battery pack—for two hours with a Universal Quick Charger—at just about any discharge level, without worrying about loss of capacity. This battery pack is completely sealed and does not contain liquid acid. For added flexibility, this battery pack can be operated in almost any position. Furthermore, this battery pack can be checked in as luggage for air travel.