Energizer Lithium 3V CR2016 (2 Pieces)

These Energizer Lithium 3V CR2016 batteries come in a pack of two and are designed to keep small electronics running smoothly. They’re the kind of coin-cell battery you’d use in things like key fobs, calculators or fitness trackers—basically any compact device that needs a reliable power source without adding bulk.

Thanks to the lithium chemistry, these CR2016 cells deliver a steady 3 V output and hold their charge for years when not in use, so you’ll have power on hand when you really need it. Their slim, flat profile slips easily into tight compartments, and having two in a pack means you’ll have a spare at the ready whenever it’s time for a swap.

Unlike standard 1.5 V alkaline button cells, these lithium batteries maintain a consistent voltage right up until they’re depleted, which helps your devices behave predictably over their entire run time. That long shelf life and reliable output are why lithium coin cells are often chosen for gadgets that demand steady performance.