This Edison battery fan has the typical C-frame bi-polar motor usually seen on such fan motors, very different from the Edison ironclad fan. The 4-blade version is the most common type of Edison fan. This particular one is earlier than most, with a nickel-plated tag on the top and no serial number. It also has sleeve bearings rather than ball bearings as found on post-1898 Edison fans.It has 12 coils in the motor, as was used for most Edison fans. It was originally supplied with a set of Type S Edison-Lalande cells, consisting of four very heavy porcelain cells in a large wooden box (see this LINK for details). The battery set was heavy and awkward, and lasted only 125 hours after which all of the internal components (zinc, copper, and acid) had to be replaced. This fan is all original and has not been restored.