The Battery Converter Transforms AA Battery into a D Cell

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 shape of a D-cell with connectors that allow you to slip in a AA…and use it as a D battery. Ouch. Since both AA’s and D’s have the same voltage, it’s an easy conversion—just don’t expect them to last as long as bona fide D-cells. At $5 USD for two, we think the Battery Converter has potential, especially for your flashlights during blackouts.

Read More | Brando via Shiny Shiny