GRAUPNER SJ ULTRA DUO PLUS 80 Instructions D'utilisation page 48

Cut-off temperature CUT. TEMPER.
If the optional temperature sensor is connected to the charger, you can enter a cut-off temperature at which the charge or discharge process is automa-
tically halted. For NiXX batteries this temperature must be no higher than 55°C (default setting).
Maximum capacity MAX. CAPACITY
If you enter a value for maximum capacity, then the charge process is automatically halted when this capacity is reached. The default setting is 150%.
The effective life of the battery can be increased by reducing this value.
Disabling ∆peak detection at start PEAK DELAY
NiXX batteries are charged using the ∆peak method: the battery voltage rises continuously during the charge process; when the pack is fully charged, the
battery temperature starts to rise, and the voltage starts to decline. The charger exploits this voltage fall-off (∆peak) as the trigger to switch off the charge
process. However, this decline in voltage affects many batteries - mostly elderly ones after many charge cycles - just a few minute after the start of the
charge process, and this would immediately trigger the cut-off. To prevent this, the ^ peak detect function is disabled for a few minutes after the start of
the charge, so that this premature voltage fall-off is ignored, and the battery is charged normally. Factory default setting: 3 minutes; the adjustment range
is from 1 - 20 minutes. We recommend entering a value of 5 minutes or less.
Trickle charge current TRI CURRENT
If the battery is not used immediately after it is fast-charged, the voltage and capacity start to decline again after quite a short time. To prevent this, NiXX
batteries should continue to be charged slowly after the end of the charge process; this is the purpose of the trickle charge function (Trickle), which should
generally be set to max. 1/10 of the battery's nominal capacity: for a 3300 mAh battery this equates to about 300 mA. The factory default setting is: 200
mA, and the available range is OFF (no trickle charge), and 50 - 500 mA.
SAFETY TIMER
The safety timer halts the charge process after the set time. The adjustment range is OFF to 300 minutes; the factory default setting is 120 minutes.
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Operating Manual ULTRA DUO PLUS 80