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Table 1: For Main Battery I: How to set the correct charging program for the battery
type (design, lead or lithium-iron phosphate technology)
Prior to start-up, imperatively set the correct characteristic line of charging being suitable for the
battery to avoid battery damages!
Set the slide switch ("BOARD Battery") to the desired position for battery I (board battery) using a small
screwdriver. Either select Lead Battery or Lithium LiFePO4 Battery using switch "1".
After that, select the desired characteristic line of charging using the switches "2", "3" and "4", as indicated in the tables:
Charging programs for lead-batteries:
If not being specified divergently by the battery manufacturer, the suitable charging program for the battery
type (design, technology) can be determined by means of the following description and the technical data
(voltage rates U1 and U2, nominal temperature and dwell times U1).
Note: The possible parallel/floating operation with consumers being connected to the battery is also
automatically considered by all charging programs.
a) "Lead Acid/AGM1": Charging program for acid/lead-acid batteries as well as AGM 14.4 V:
For charging and trickle charge of supply (board) batteries. Ensures short charging times, high
charging factor and acid mixing for open standard batteries and closed, low-maintenance,
maintenance-free "non-solid electrolyte", "lead-acid", drive, lighting, solar and heavy duty batteries.
Also suitable for recently developed batteries (low-antimonous, batteries with silver-alloy,
calcium/calcium or similar) and batteries with low and very low water consumption, as well as
AGM batteries with the indication 14.4 V.
Characteristic line of charging IU1oU2 Acid/AGM:
U1 Main/Full Charging: 14.40 V +20 °C 1.5-5 h
U2 Full/Trickle/Storage Charging: 13.50 V +20 °C Continuous
Safety mode at excess temperature of the battery: 12.80 V > +50 °C
b) "AGM2": Charging program for AGM/Fleece batteries 14.7 V:
Adapted to closed, gas-tight AGM (absorbed glass mat) batteries and batteries in lead-fleece
technology, Lead Crystal, VRLA, requiring a particularly high level U1 for full charging.
ATTENTION: It is highly recommended to check the specification sheet of the battery concerning the
high charging voltage U1 14.7 V.
Unsuitable batteries might age prematurely due to loss of electrolyte!
Some manufacturers of AGM/fleece batteries are also prescribing a 14.4 V charging program for
charging! In these cases, please set "Lead Acid/AGM1" (14.4 V / 13.45 V).
Characteristic Line AGM/Fleece IU1oU2:
U1 Main/Full Charging: 14.70 V (!) +20 °C 1.5-5 h
U2 Full/Trickle/Storage Charging: 13.50 V +20 °C Continuous
Safety mode at excess temperature of the battery: 12.80 V > +50 °C
c) "Gel": Charging program for gel/dryfit batteries:
Adapted to closed, gas-tight Gel batteries with determined electrolytes, which are generally requiring
a higher charging voltage level and longer dwell times U1 to achieve short charging times with
particularly high capacity storage and to avoid total discharge, e. g. EXIDE, Sonnenschein dryfit- Start,
Dryfit-Sport-Line, DETA Gel Battery Funline, Bosch AS Gel Batteries Va/Z, AS Gel Drive Batteries, AS Gel
lighting batteries.
If not being specified divergently by the battery manufacturer, also recommended for
batteries in round cell technology.
EXIDE, DETA, VARTA Characteristic Line Gel IU1oU2:
U1 Main/Full Charging: 14.40 V +20 °C 6-12 h
U2 Full/Trickle/Storage Charging: 13.80 V +20 °C Continuous
Safety mode at excess temperature of the battery: 12.80 V > +50 °C
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