HOW DOES IT WORK?

The National Luna Intelligent Maintenance Charger features an eight-step charging cycle that works as follows: 1 Diagnosis. The unique diagnostic function checks the status of the battery and determines if it can accept a charge. 2 Recovery. This soft-start stage pulses the output energy, making sure the battery is in a state to accept the full-charge current. 3 Bulk. 80 % of the battery’s energy is returned in this phase, using maximum current output. 4 Absorption. The charging current drops off slowly as the battery reaches full capacity. Voltage is carefully regulated at this stage. This highlights a major difference between regulated and non-regulated chargers. 5 Analysis. The charger once again checks the status of the battery and determines whether or not it’s retaining energy. 6 Boost. This feature is used to recover some battery types – like a deep-cycle calcium battery – in order to restore maximum capacity. 7 Float. Once the battery is fully charged, the charge voltage is reduced to prevent overcharging. 8 Maintenance charge. The charger continuously monitors the terminal voltage in order to determine if a maintenance charge should be initiated. If the voltage drops due to self-discharging (or a load), the charger re-applies current to keep the battery full.