La Crosse Technology RS-900 Instruction Manual page 12

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. (The mode key shall first be pressed and held for 1 second
to activate the mode change. The subsequent pressing of the mode key will enable to toggle
between the "Charge", "Discharge", "Test" and "Refresh" mode.)
Then within 4 seconds from the last key pressing, user may select the charging/
discharging current by pressing the CURRENT key.
Note:
There is a 4-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.
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