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Four Stage Battery Charging With Prefloat Explained


October, 12 2012
  1. Bulk charges batteries to 75-80% of full charge.
  2. Absorption gradually completes remaining charge to full.
  3. PreFloat moves each battery individually from Absorption to PreFloat, based on the need of the battery. This prevents overcharging and damage to the batteries. Up to 0.5V difference between Absorption and PreFloat voltages can be achieved.
  4. Float maintains battery charge.

Example of Flooded Lead Acid Battery

Conventional Battery Charges

Conventional battery chargers move all batteries from Absorption to Float simultaneously with no ability to adjust for individual battery requirements.



Example of Flooded Lead Acid Battery

Forced Absorption: A period when batteries are potentially over charged.
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