Silver Oxide (SR) and Alkaline batteries (LR) are commonly used in watches, clocks, timers, calculators, laser pointers, toys, and LED "blinkies". Batteries that meet the IEC 60086-3 standards for watch batteries carry a "W" suffix. The functional differences between silver oxide and alkaline are:
SR45 silver oxide batteries can be used to replace the following:
SR936SW, SR936, SB-A4, 280-17, V394, D394, 625, 394, GP394, AG9, AG-9, 394, SG9, L936, LR936, SR45, RW33, 394A, 394X, SR9365W, E394. All have dimensions of 9.5 mm diameter and 3.6 mm height. The alkaline varieties have mAh 48 and the silver oxide varieties have mAh of 55-70.