Duracell Optimum AA + AAA Batteries combo pack – Link

This is currently marked down on Amazon to only $15.53.

• UPGRADE YOUR DEVICE Our Triple A battery can deliver Extra Power in some devices, or Extra Life in other devices, vs Coppertop AA/AAA, in a wide range of devices
• ADVANCED SLIDER PACK features a resealable storage tray that keeps your Optimum batteries right where you need them
• RESEALABLE PACKAGE We took your feedback and redesigned our easy-seal pack for maximum convenience and safer storage
• VERSATILE & POWERFUL Compatible with any AAA battery-operated device
• AVAILABLE IN AA AND AAA battery sizes in 4 pack, 6 pack, 8 pack, 12 pack, and 18 pack
• BATTERY GUARANTEE Duracell guarantees these batteries against defects in materials and workmanship