Rugged…Tough…Intelligent….Automatic…Waterproof…Reliable Battery Chargers

The Chargetek 150 is a maintenance charger. Maintenance type chargers are useful in applications such as battery storage and where there is no requirement to return 100% of the battery capacity by the maintainer. Maintenance chargers are often used where the primary charging source, such as an alternator, is used infrequently. The battery charge is maintained over the long term by the maintenance charger. Please refer to the figure below.

Stage I: Constant Current Charging or Bulk Charge Mode

Assuming the battery is starting in a discharged state, the charger is operating in constant current mode, where the charger current is maintained at a constant value and the battery voltage is allowed to rise as it is being recharged. Approximately 80% of battery capacity is returned in the constant current region.

Stage II: Float Mode

The Float mode follows the Constant Current Mode. Float mode is where the battery voltage is maintained at approximately 2.25 volts per cell, or 13.5 volts for a 12V battery. This charger will maintain the battery indefinately without boiling out electrolyte or overcharging the battery.