Durable battery size converter case. The battery adapter converts the AA battery to D size battery. The adapter has metal contacts on the bottom. It provides AA batteries long powerlife.

Made from high quality, durable clear plastic and metal on the bottom. Small in size, easy to carry. Easily keep your battery close at hand, at home, at the office, at the campsite etc.

Note: It fits standard size AA battery; it doesn't fit some rechargeable batteries which is bigger than standard size AA battery.