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Battery Charging Reference
B–2 975-0170-01-01
Charging Algorithms (Formulas)
Battery Type
RS3000 charges flooded (or wet) lead-acid, gel, AGM (absorbed glass
mat), and custom batteries. See “Batt Type” on page 3–16 for information
on selecting your battery type.
Flooded (or wet) Flooded (or wet) batteries have removable battery caps for refilling with
distilled water and testing the electrolyte.
Gel Gel batteries have the electrolyte in the form of a gel rather than a liquid
and do not require topping up. Gel batteries are sealed and the battery
caps are not removable.
AGM AGM (absorbed glass mat) batteries are similar to gel batteries except that
the electrolyte is absorbed into a fiberglass matting.
Custom Custom is configured by the dealer, factory, or service center for battery
types other than those listed above.
Charge Algorithm Stages
Three-Stage charging
If three-stage charging is enabled, the RS3000 will charge batteries in a
sequence known as three-stage charging. The charging voltage delivered
to the battery depends on the battery:
• type setting
• temperature (by switch setting or battery temperature sensor)
• state of charge
The three automatic stages are:
•bulk
• absorption
•float
See Figure B-1 for a graph of the three-stage charging profile.
WARNING: Risk of battery damage
Since the RS3000 has only one battery type setting for all batteries connected to
its bank, do not mix battery types. All connected batteries should be of one kind:
Flooded (or wet) or Gel or AGM or Custom.