GRAUPNER ULTRAMAT 14 PLUS Operating Manual page 34

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N i M H m a n u a l
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C : 2 . 5 A
+
-
INC DEC
N i M H b a l a n c e
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o f f v o l t =
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2
START
sec.
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* * I N F O R M A T I O N * * *
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
B A L A N C E R C O N .
2
sec.
B L C 2 8 : 3 0
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
N M + 0 . 0 0 A 0 7 . 7 1 7 V
34
Ni-MH manual program
Select this program when you simply wish to recharge a
battery using the set charge current. You can adjust the
charge current using the INC / DEC buttons, but only
before you connect the pack for charging. The range
available is 0.1 A to 5 A.
Never use a maximum charge current higher as the value
described in the battery instruction, never higher as 2C!
Never charge transmitter batteries with more as 2A!
f. e. a 4.2Ah battery should be limited to max. 4.2A.
The charge process is terminated automatically in
accordance with the values already set for „Ni-MH Delta
Peak cut-off voltage".
Ni-MH discharge balancing program
The balancing program does balance up to 6 cells of a battery
c u t
pack.
1 . 2 0 V
The final discharge voltage for the balancer can be set
within the range 1.20 ... 1.30 V using the INC or DEC
+ -
button.
INC
DEC
The individual cells in a battery should be balanced before
the pack is charged, to avoid the possibility of individual
cells being overcharged during the charge process. A
battery should always be balanced before being charged
if it has been stored for a considerable period;
connect the balancer plug to the charger to carry this out.
It is also essential that the voltage of each cell in the pack
should be higher than the set balancer final discharge
voltage.
If you wish to obtain maximum battery capacity, the
individual cells should be discharged to 1.20 V a few hours
- but no longer than two hours - before the next charge
process. If the voltage falls below 1.20 V, the battery cells
0 1 4 2 5
lose capacity, so the pack must be charged to around
60% capacity before being stored for a protracted period.
The program balances the battery pack. Cells with a
higher cell voltage are discharged at around 100 mA
(balancing current). The charger terminates the discharge
balance process once all the cells have reached the
balancer final discharge voltage (+0.01 V).