La Crosse Technology BC-9009U - Manual (Page 5)

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fourth rechargeable batteries can be only set to charging at a maximum current of 700
mA.
Therefore, the user is advised to place the battery with the highest expected charging
current in Compartment 1 first. To release the restriction of setting charging current,
user must take out all four rechargeable batteries from the charging unit.
 To change the operating mode during charging, one can press the MODE key (for
selecting all rechargeable batteries) or NUMBER key then MODE key (for selecting
individual rechargeable battery). 8 seconds after the last key press the LCD will blink
one time to indicate the end of changing.
 When overheating conditions occur (over about 127°F (53°C)), usually due to too high
a charging current selected), the charging will be stopped immediately and the display
will read “000 mA”, the charging process will only resume once the temperature of the
rechargeable batteries drops to a safe level. If overheating conditions continue to
occur, the rechargeable batteries must be taken out to cool down and then charged at
a lower current.
When the battery is overheated the
charging will cease automatically. “000
mA” will be displayed.
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 For a new rechargeable battery it is recommended to charge it with 200 mA current to
re-condition it from the long storage status.
DISCHARGE MODE
Discharge mode will first discharge the rechargeable battery then charge it. It is for removing
the memory effects of rechargeable batteries.
By pressing the MODE key within 8 seconds after inserting the rechargeable batteries, the
Discharge mode can be selected. Then the user may also select different discharging current
(see Table 2) by pressing the CURRENT key, within 8 seconds after inserting the batteries.
(The display will blink once to indicate the setting has been confirmed and the current cannot
be changed afterward.)
Discharging current: 250 mA
Discharge Mode
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Note:
 The discharging current is always set to be half of the coming charging current whose
upper limit is 1000 mA (see Table 2). Therefore the user is recommended to carefully
select the discharging current so that the charging current afterward will not be too
high.
 The mode key shall first be pressed and held for about 1 second to activate the mode
change. The subsequent pressing of the mode key will toggle between the “Charge”,
“Discharge”, “Test” and “Refresh” mode.
Table 2. DISCHARGE MODE Current
User-selected Discharging
current
100 mA 250 mA 350 mA 500 mA
Thereafter Charging
current
200 mA 500 mA 700 mA 1000 mA
Finally, batteries will be fully charged in discharge mode and “Full” will be displayed. If the
user presses the DISPLAY key at this time, "charge" icon instead of "discharge" icon will be
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displayed.
REFRESH MODE
Old rechargeable batteries and those that have not been used for a long time require
refreshing. This process will recover the optimum capacity of the rechargeable batteries. By
pressing the MODE key within 8 seconds after inserting the rechargeable batteries, the
Refresh mode can be selected.
Refresh mode will start with discharging the rechargeable battery, then charging it. The
repeated discharging and charging cycles will be launched until no further increase in the
measured capacities is estimated.
Refresh mode (the battery is
being discharged)
Discharging current: 250 mA