The 7 Best A23 Batteries
This wiki has been updated 7 times since it was first published in November of 2017. You've probably got a drawerful of AA and AAA batteries at home, maybe with some Cs and Ds thrown in there from the '90s. But when your garage door opener or key fob remote stops working, you'll need a new set of A23 batteries, which, while you may not have heard of them before, are actually quite common and useful for this exact purpose. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki. Skip to the best a23 battery on Amazon.