A common equivalent for the LR41 alkaline battery is the 384/392B sized watch battery. It is a thin circular silver oxide 1.55 volt button battery.
Other equivalent replacement batteries include SR41, G3, LR4192, LR736, A63, AG3, SR41SW, 325, 384, 392, LR41, SR736, SB-A1/D1, 280-18, V384, D384, 247, GP192, S736E, SR736PW, SR736SW, TR41SW and SR41W.
The LR41 battery is often used for watches, toys, glucose monitors, handheld games, calculators and additional applications. The LR41 or equivalent battery can be found in drugstores, hardware stores, grocery stores, electronic stores and other retailers. The battery can also be purchased from several online merchants.