This is a replacement transformer for 36 volt, 25 amp Lester golf cart charger model # 8600 only.
A battery charger transformer is used to "transform" the power supply from the wall, which is AC into a useable DC output to the batteries.
This transformer can be found in the following golf cart chargers:
Club Car, Factory Part # 102114
Harley Davidson/Columbia, Factory Part # 66512-69
Cushman, Factory Part # 820196
Check out some additional troubleshooting information on Chargers.