LRAD’s Portable Power Pack is the solution when vehicle power is not readily available. The Power Pack integrates leak-proof Absorbed Glass Mat (AGM) batteries and a marine grade, electronically controlled battery charger. The LRAD Power Pack is compact, portable and can be operated with the case lid closed to protect the internal electronics from all weather conditions. The Power Pack’s 21 Amp-Hour battery provides up to 10 hours of continuous full power voice broadcasts for the LR AD 300X and up to 5 hours for the LR AD 500X.