Phocos MPPTsolid, User Manual

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Three Stage Battery Charging
The three stage charging process results in a more efficient charging of the batteries. The
three stages of charging are the main stage, the absorption stage and the float stage.
Your MPPTsolid charge controller will automatically move from one charging stage to
the next as your batteries require.
Main Stage
In this first stage of the charging, the battery is allowed to have a large constant draw on
the available current. MPPTsolid uses MPPT technology to provide the maximum
available power in this stage, to shorten the charge time or increase the amount of
stored energy.
Absorption Stage
The absorption stage commences when the charging voltage reaches the preset
absorption voltage. MPPTsolid continues to charge at this constant elevated voltage until
the current reaches the switch to float preset. Absorption charging applies peak charge
until battery is fully charged. This stage is critical to using the storage capacity of the
batteries to their full potential.
Float Stage
The float stage is a maintenance charge at a preset constant voltage. It can be
maintained indefinitely to ensure the batteries maintain the maximum state of charge by
allowing the current to vary.
Charge Timer
The charge timer starts once battery voltage goes above the float voltage by a certain
amount. The timer will run for a pre-determined amount of time based on the battery
specifications provided by the manufacturer, but is adjustable in the PowerWizard
software. When the timer expires, the charger will switch into float mode. A new timer
will start and the charger will not return to bulk or absorption mode for a predetermined
amount of time to allow the battery to recover.