La Crosse Technology Battery Charger Instruction Manual page 3

Note:
User shall always observe the recommended maximum charging current of the
rechargeable batteries. In general, 200 mA is a recommended charging current if
rapid charging is not necessary. It is definitely safe and optimum to the rechargeable
batteries.
It may be necessary to charge and discharge the new rechargeable batteries for
several times in the beginning before the optimum capacity of the rechargeable
batteries can be obtained. And user is recommended to adopt once the "Refresh"
mode to the new rechargeable batteries in order to achieve the optimum battery
capacity.
When the transformer has been plugged to the power source, the version number of
the charger (for example "29" ) will be displayed first. Then all the segments will light
up momentarily and the "null" sign will be shown before batteries are placed. If
damaged batteries are placed to the charging unit, the charger will also show "null" on
LCD.
"null" displayed - No battery or damaged
battery is placed to the charging unit
After 8 seconds from no more keys
pressing, the LCD will blink once to
indicate the setting is confirmed and
the selected mode activated
During charging, the different displays- Charging current (in mA), Time elapsed (in hh:mm),
Terminal voltage (in V) and Accumulated capacities (in mAh or Ah) may be toggled and
selected by pressing the DISPLAY key (refer Table 4).
After the rechargeable battery is fully charged, "Full" sign will be shown on the display and
the user may take them out at this time. Or if the rechargeable batteries are kept placed in
the compartments, trickle charging will start. The trickle charging current is around 5% of the
selected charging current to keep the rechargeable batteries full.
"Full" sign is shown -The
battery is fully charged
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Charging current: 200 mA
Charge Mode
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START CHARGING THE RECHARGEABLE BATTERIES
Once a rechargeable battery is inserted after the transformer has been plugged to the power
source, the battery voltage (for example, "1.39V") will be displayed for 4 seconds. Then "200
mA Charge" (default mode) will be shown on LCD for another 4 seconds, indicating that
charging with 200 mA is to be started if no alternation in setting is made.
Within this 8-second time from inserting the batteries the user may first select the
operating mode by the MODE key. Press and hold the MODE button for 5 seconds.
Then within 8 seconds from the last key pressing, user may select the charging/
discharging current by pressing the CURRENT key.
Note:
• The mode key shall first be pressed and held for about 5 seconds to activate the
mode change. The subsequent pressing of the mode key will enable to toggle
between the "Charge", "Discharge", "Test" and "Refresh" mode.
• There is a 8-second time allowed for choosing further functions after each key
pressing. If no more key is pressed, the LCD will blink one time to indicate the end of
setting. Afterward, the current can no longer be changed during the process and the
selected mode will be undergone.
Note :
The current cannot be altered once the setting has been confirmed in the initial stage.
Therefore, the user can avoid changing the current setting accidentally while setting
up other rechargeable batteries. If one wants to change the applied current afterward,
the rechargeable batteries must be taken out and inserted again.
The maximum charging current of other rechargeable batteries is restricted by the
current setting of the first inserted rechargeable battery. For instance, if the first
inserted rechargeable battery is set to charge at 500 mA, then the second, third and
fourth rechargeable batteries can be only set to charging at a maximum current of 500
mA.
Therefore, the user is recommended to place the battery with the highest expected
charging current in Compartment 1 first. To release the restriction of setting charging
current, user shall 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
an individual rechargeable battery). 8 seconds after the last key is pressed the LCD
will blink one time to indicate the end of changing.
When overheating condition occurs (usually due to too high of a charging current
selected), the charging will be stopped immediately and the display will shown "000
mA", the charging process will only resume once the temperature of the rechargeable
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