Korean battery giant SK On’s U.S. operations are far bigger than you think. Now, it’s going all in on battery R&D.

The run time will be reduced, but the cost of replacing a single-use battery won't be there. The spacers come in two sizes to make a AA into a C- or D-cell battery.

We wonder if the D-Cell battery suffers from low self-esteem, as it’s never been as popular as rivals AA and AAA. Another blow to D’s self-image is the Battery Converter, a plastic case the size and ...

State Sen. Tony Hwang said Friday, “After over 50 years of operation in Bethel, Duracell’s decision to move its R&D headquarters to Atlanta marks yet another corporate exit from Connecticut.