Charging Characteristics; Battery Type - Victron energy Phoenix MultiPlus 12/3000/120 Manuel

Ground relay (see appendix B)
With this relay (H), the neutral conductor of the AC output is grounded to the chassis
when the back feed safety relay is open. This ensures the correct operation of earth
leakage circuit breakers in the output.
If a non-grounded output is required during inverter operation, this function must be
turned off. (See also Section 4.5)
Not adjustable with DIP switches.

Charging characteristics

The standard setting is 'Four-stage adaptive with BatterySafe mode'. See Section 2
for a description.
This is the best charging characteristic. See the help files in the software configuration
programs for other features.
'Fixed' mode can be selected with DIP switches.

Battery type

The standard setting is the most suitable for Victron Gel Deep Discharge, Gel Exide
A200, and tubular plate stationary batteries (OPzS). This setting can also be used for
many other batteries: e.g. Victron AGM Deep Discharge and other AGM batteries, and
many types of flat-plate open batteries. Four charging voltages can be set with DIP
switches.
Absorption time
This depends on the bulk time (adaptive charging characteristic), so that the battery is
optimally charged. If the 'fixed' charging characteristic is selected, the absorption time
is fixed. For most batteries, a maximum absorption time of eight hours is suitable. If an
extra high absorption voltage is selected for rapid charging (only possible for open,
flooded batteries!), four hours is preferable. With DIP switches, a time of eight or four
hours can be set. For the adaptive charging characteristic, this determines the
maximum absorption time.
Storage voltage, Repeated Absorption Time, Absorption Repeat Interval
See Section 2. Not adjustable with DIP switches.
Bulk Protection
When this setting is 'on', the bulk charging time is limited to 10 hours. A longer
charging time could indicate a system error (e.g. a battery cell short-circuit). Not
adjustable with DIP switches.
AC input current limit
These are the standard current limit settings for which PowerControl and PowerAssist
come into operation. The standard setting is 30A. In case of models with max. 16A
feed through current, the maximum is automatically reduced to 16A.
See Section 2, the book 'Energy Unlimited', or the many descriptions of this unique
feature on our website www.victronenergy.com .
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