You should take a look at the battery that you have in your bore light.
None the less there are battery equivalents for the 392 battery. SR41, SR736W, 384, 392, D384/392, SR41SW, SR41W, V384, V392, SR736 Look at the button cell battery display in your dollar store. Thhere may be a blister pack wiith 4 batteries for $1. Then there is Harbor Freight. They have a multi battery pack with 4 LR41 (replaces SR41) batteries for $3.