Schaudt DT 220 B Instruction Manual page 17

5.5.2.2
Battery status
Off-load voltage
830.588 BA / EN
DT 220 B control and switch panel instruction manual
Battery voltage
The following table shows how to interpret the displayed leisure battery vol-
tage correctly. These values apply to actual operation, not off-load voltage.
Battery voltage
10.4 V or less
11 V or more
10.5 V to 12 V
12 V to 13.2 V
More than 13.2 V
13.8 V constant
14.3 V
1) Depending on the current load
Measuring the off-load voltage is an additional way of assessing the condi-
tion of the battery. Off-load voltage is the voltage of the charged battery in a
passive state, with no current being supplied or drawn.
Take the measurement several hours after the last charging. In the mean-
time, no significant load should have been placed on the battery, which
means no current should have been drawn from it. If the off-load voltage of
the battery is less than 12.0 V, there is a risk of total discharge.
It is best to make the check in the morning before the 12 V consumers
Y
are switched on.
The battery voltage is too low if "CHARGE" is displayed and the battery
must be recharged (see Chapter 5.6.1 as well).
When starting up the system again the battery voltage of the leisure bat-
Y
tery should be tested before starting up the engine and before connecting
the vehicle to the network. If idle for max. 6 months (and if the battery
was previously fully loaded) the battery charge should be above 12.7 V. If
the voltage is below 12 V the battery is probably faulty.
Issued: 30.06.2006
Description
Risk of total discharge
F
The battery monitor switches off all
F
consumers immediately (apart from
the frost protection valve)
12 V power supply can be switched on
using the main switch
The battery alarm will be triggered if
F
the voltage drops below 12 V
The battery capacity will be set to
F
"zero" if the voltage remains below
1)
10.5--12 V for more than 1 minute
The system will be switched off if the
F
voltage remains below 10.5--12 V
for more than 5 minutes
Battery off-load
Battery is being charged: Main charge
Trickle charge voltage
Final charge voltage (full load)
1 hour for lead-acid battery
F
8 hours for lead-gel battery
F
1)
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