Double-Sided Battery Organizer: The Ontel Battery Daddy is a compact & portable way to organize, store and protect a boatload of batteries! Clear 'Easy View' cover lets you see everything at a glance and prevent any unwanted contact. | Sleek and Compact Design: Battery Daddy uses both sides to store up to 150 batteries of all types. Holds 58 AAs, 68 AAAs, (4) 9 Volt, 8 Cs, 8 Ds, & 8 Button Cells. Easily stores away in any drawer. Includes Battery Tester | Find the Right Battery: Incorrect storage drains batteries. Stay organized and be prepared for power outages, new gifts, or any time you need to replace a dead battery. Built-in carrying handle lets you take it anywhere | Battery Tester Included: Battery Daddy comes with a tester that can check whether your single-use or rechargable batteries are still good. Just align the negatives and positives of the batteries on the tester and you can see the result on the indicator | Easy Storage: The compact size allows for storage in drawers and shelves along with your other supplies and household items. The portable design has a sturdy carrying handle and secure heavy-duty latches so you can easily transport