11. Charge settings - USER SET menu
Selecting the LiXX battery type:
The LiXX battery type is selected in this display: LiFe: 3.3 V; LiIo: 3.6 V; or LiPo: 3.7 V
WARNING: it is absolutely essential to enter the correct battery type at this point, otherwise the battery may be
damaged or - worse - ignite or even explode!
CHK Time LiPo/LiIo/LiFe:
The GM Commander SPORT automatically detects the cell count of the battery connected to it, in order to prevent user errors.
However, under certain circumstances - for example, if the battery is deeply discharged - the calculated cell count may be false.
For this reason it is possible to enter a period during which the charger constantly monitors the battery voltage, and corrects the
number of cells if necessary. In most cases a period of 15 seconds is sufficient to give a correct cell count value, but a longer
period should be selected for batteries of very high capacity.
The monitor period must also be increased if you find that the charger incorrectly calculates the cell count at the start of the
charge process. Never continue to charge the battery if the displayed cell count is not the same as the actual cell count!
NiCd/NiMH Sensitivity:
At this point you can set the Delta Peak sensitivity - see also the bottom of the page. The range of values available is 5 to 20 mV
per cell. Setting a higher value causes the battery to be charged more fully, but also allows it to heat up to a higher temperature;
there is a possibility of overcharging the pack, which may shorten its useful life. We recommend a value in the range 8 - 12 mV
for NiCd batteries, 7 mV for NiMH batteries, and 5 mV for NiMH RTU batteries.
The factory default setting is: 12 mV for NiCd, and 7 mV for NiMH
USB/Temp Select - Temp Cut-off:
The cut-off temperature can be set at this point, but the value only has any effect if a temperature sensor is connected to the
appropriate socket on the charger. The USB function is not available on the GM Commander SPORT.
USB/Temp Select:
This point is used for switching temperature monitoring on and off.
Enabled = on; Disabled = off
Peak trigger voltage:
The automatic charge termination circuit (battery full detection) works on the proven Delta Peak principle (also known as the Delta-V process),
which is already in use in millions of chargers. This process analyses the voltage peak of the charge curve, which indicates with great accuracy
when the maximum charge capacity is reached. When the charge process is started the battery voltage initially rises continuously, but as the pack
approaches full capacity it begins to heat up. This in turn causes the battery voltage to fall slightly (Delta-V). The charger detects and assesses
the voltage decline.It is possible to adjust the sensitivity, or trigger voltage (in mV per cell!) of the automatic cut-off circuit. A practical range of
values has proved to be 3 ... 20 mV / cell. For most NiMH batteries a value between 5 and 10 mV are found to be ideal, however, RTU batteries
must set to 5 mVn.
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Operating Manual GM COMMANDER SPORT