ActivMedia Robotics Operating System

The "overcharge" bit ID7 is set (1) when the batteries are well below full charge and the charger is at full charging current. During this bulk-charging period, the battery voltage rises to around 13.8-14V. The overcharge bit ID7 then drops to low (0) while the batteries charge from approximately 80% to 90% of full charge: from ~13.8 to 14.7V. The charger then reverts to "float mode", maintaining full charge at much lower current and charger voltage (~13.5V).

In float mode, the overcharge bit ID7 is set.

Accordingly, by monitoring the power-good and overcharge bits, as well as the battery voltage, your client may make recharging strategy decisions. The thing to remember is that lead-acid batteries last longest when routinely charged into float mode, typically once per day.

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Pioneer 3TM, 2TM manual ActivMedia Robotics Operating System