Fronius Acctiva Professional Flash Instructions De Service page 56

User charging User charging is an additional charging mode in which charging parameters for the device
mode can be specified individually.
The parameters for user charging mode are preset in the factory for standby applications
(e.g. emergency power systems) or for ambient temperatures > 35° C (95° F).
The user charging mode should be used for:
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External power The external power supply mode is to ensure consumers have a power supply
supply mode -
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Charge accept- Charge acceptance test mode is used to test a battery's ability to accept a charge. The test
ance test mode takes place as follows:
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charging / conservation charging with battery either fitted or removed
trickle mode (to charge the battery when consumers in the vehicle are switched on)
when there is increased power consumption (e.g. updating firmware/software for the
vehicle's electronics),
in back-up mode, to supply power to the on-board electronic systems while the battery
is being changed (to avoid losing settings such as time, radio settings, etc.).
the automatic charge acceptance test takes only a few minutes
the charge acceptance test is ended after a predefined period has elapsed
if the result is positive, the device will switch automatically to standard charging mode
and charge the battery
if the result is negative, „Test Fail" appears on the charger's screen and charging of
the battery is halted.