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Battery Charging
B–2
Charging Algorithms
Battery Type
Truecharge+ charges lead-acid flooded, gel, and AGM (absorbed glass
mat) batteries.
Flooded “Flooded” batteries have removable battery caps for refilling with
distilled water and testing the electrolyte.
Gel The sealed gel battery has its electrolyte is in the form of a gel rather than
a liquid and does not require topping up. Battery caps are not removable.
AGM AGM (absorbed glass mat) batteries are similar to gel batteries except the
electrolyte is absorbed into a fibreglass matting.
Charge Algorithm Stages
Three-stage
charging
Truecharge+ charges batteries in a sequence known as a three-stage
charge. The charging voltage delivered to the battery depends on the
battery
• type setting
• temperature (by switch setting or battery temperature sensor)
• state of charge
Stages The three automatic stages are:
•bulk
• absorption
•float
There is a fourth stage, equalization, that is initialized manually since it is
only performed occasionally and only on flooded batteries.
WARNING Risk of battery damage
Since the Truecharge+ has only one battery type setting for all
batteries connected to its three banks, do not mix types. All
connected batteries should be of one kind: Flooded or Gel or AGM.