EBL via Amazon is offering 16 Pack of 1.5V AA batteries for just $13 after a discount code on Amazon. The batteries have a longer lifespan than other batteries and very useful for toys, mouse and other AA batteries enabled devices.
Discount Code: LAM93W3A [Enter at Checkout]
From the Product Page:
33% lighter than standard alkaline batteries.
Super long storage lifespan, friendly environment, and less waste.
1.5V batteries, ultra for digital cameras, toys, mouse and more aaa batteries enable devices.
Perform in extreme temperatures from -40F degrees to 140F degrees.
Package: 16 Counts Advanced AA 3000mAh Lithium Batteries (NOT rechargeable) and battery storage case.