What does "multistage charging" mean?
The OPTIMA® Chargers Digital 400 and Digital 1200 12V Performance Battery Charger and Maintainer Performance Charger employ the latest in digital, multistage charging. With up to six fully automatic modes, your OPTIMA Digital 400 or Digital 1200 Performance Charger will follow in sequence through stages 1 through 6 listed below:
Stage 1: Analyze your battery's condition, state of charge and quality of connections before charging.
Stage 2: Soft-ramp charging control for deeply discharged batteries when necessary.
Stage 3: Fast-charge bulk mode for moderately discharged batteries also known as normal battery charging.
Stage 4: Conditioning mode for conditioning your battery with a finish/complete charge.
Stage 5: Auto maintain, float mode for keeping your battery fully charged.
Stage 6: Automatic storage recondition mode – desulfates your battery when in storage and being maintained.