GRAUPNER ULTRA TRIO PLUS 16 Operating Manual page 45

Please do not be surprised if the charger does not deliver the charge current you have selected. The
charge program constantly monitors the battery's voltage, and limits the current in order to prevent
excessive gassing of the battery.
The ULTRA TRIO PLUS 16 now charges the battery using the maximum possible current until its
voltage rises to around 2.3 to 2.35 Volts per cell. The charger then switches to a lower current to bring
the battery gently up to full charge; this process reliably fi lls the battery „to the brim".
The unit cuts off the charge process automatically when the battery reaches a voltage of around 2.3
to 2.35 Volts per cell.
The effect of the automatic charge current adjustment system is to complete a full charge safely in much
less than the usual 14 to 16 hours.
E N D _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
P b d i s c h a r g e
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
2 sec.
P b - D: 1 . 0 A
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
+ -
INC
DEC
ENTER
When the charge process is terminated, the charger emits
audible tones for a certain period. At the same time the screen
also displays the message „END".
Pb discharge program
The typical purpose of this program is to determine the residual
capacity of a drive battery.
In this program the charger discharges the pack using the set
discharge current (0.1 ... 5.0 A, left of screen) until its voltage
falls to the set fi nal discharge voltage (1.7 ... 12.0 V, right of
screen). To obtain a realistic capacity reading, i.e. one which
actually refl ects the battery's condition, the discharge current
1 0 . 8 V
should be set
substantially below 1C (capacity of the battery = 2 Ah —> C =
2 A), and the fi nal discharge voltage should be set to around
+ -
1.7 V per cell.
INC DEC
45