PowerPax 12 AA Battery Caddy Case Holder Carrier - Caution Yellow This 12 pack battery caddy from PowerPax allows you to store your spare AA batteries in a single, compact and easy to find unit. The caddy allows you to easily dispense individual batteries with one hand for safety and convenience. The tough and lightweight plastic material also provides terminal protection at both ends regardless of how the batteries are inserted. Easy to find in the bottom of your rucksack.