Will you be carrying replaceable batteries and a screwdriver? In case you don’t have an extra calculator that is…
No, and I have my calculator for 3 years now. Maybe I’m dumb to not bring something…
The BA II PLUS and BA II PLUS PROFESSIONAL financial calculators use one lithium manganese battery for about 1500 hours of operation. Old batteries need to be replaced with Eveready CR2032, Duracell DL2032, or the equivalent. https://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=89788