Energizer MAX 9V Alkaline Batteries 4 Pack

• Amazon now offers Energizer MAX 9V Alkaline Batteries, 4-Pack, now $6.21 (was $16.86). Clip the 40% coupon and checkout via Subscribe & Save.
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
• Buy >>

Editor's Pick: Smoke alarm batteries should be replaced every six months, so it's always good to have a few 9V batteries on hand. Energizer's batteries are long-lasting, so you won't have to worry about changing them often. This 4-pack works with smoke alarms, wireless microphones, multimeters, and more—just stash them in a drawer and you're set.