This is a I/C (industrial/commercial) series charger which is fitted with a Dealer settable BTS (battery type switch). The charging circuitry will work correctly with Sealed, Gelled or Flooded type batteries. For more information see the header line" Battery Type and Rating". *Only an Interacter Authorized Service Technician is authorized to change the charger battery type setting. Failure to select the correct setting will affect the performance of the battery, and may cause the battery to gas and void warranty.