Duracell 20 AA & 20 AAA Pack Duralock Alkaline Batteries – Link
AltaTac has this on sale via eBay for only $13.95.
Shipping is free.
“Get dependable, long-lasting power from Duracell Coppertop batteries. Engineered to power all your household devices from remote controls to portable devices. With Duralock Power Preserve Technology you can be assured they will stay charged for up to 10 years even in storage.”