Pile alcaline Duracell(R) Procell

Used these in a wireless thermometer and they're still going strong after six months, which is way longer than the cheap store brand ones I used before. The no added mercury part makes me feel a bit better about tossing them too.

For a box of batteries, these feel reassuringly solid out of the pack, and the no-added-mercury spec is the reason I picked them without a second thought. The button cell for my kitchen scale has been going strong for three months with daily use, which is exactly the kind of dependable life I was ho

These batteries are holding up way better than the cheap off-brands I used to buy. I've had them in my wireless mouse and wall clock for months and they're still going strong, plus it's nice knowing they don't have any added mercury.