Watch Batteries 315: What Buyers Should Know Before Ordering

There’s a particular kind of battery purchase where guessing is a bad idea: watch batteries. They’re small, inexpensive, and easy to confuse with one another. A difference of a few millimeters can mean the cell won’t fit, while choosing the wrong battery type can affect how a watch operates. That’s why identifying the exact model before ordering matters more than simply searching for “small watch battery.” The 315 watch battery is a silver oxide cell commonly identified as SR716SW. MicroBattery lists the 315 at 1.55V, approximately 7.9 mm in diameter and 1.68 mm high. Its 315 category includes products from manufacturers such as Seizaiken, Maxell, Energizer, and Murata. For someone replacing one watch battery, that information may be enough to get started. For a repair shop, reseller, or business purchasing inventory, there are a few more things worth checking before placing the order.