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3

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. “Charge”, “Discharge”, 
“Refresh” and “Test” mode may be chosen. 
Then within 4 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 1 second to activate the mode change. The subsequent pressing of the mode key will toggle 
between the “Charge”, “Discharge”, “Test” and “Refresh” mode.   

 

There is a 4-second time allowed for choosing further functions after each key pressing. If no more keys are 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 begin.   

 
 
 
 
 
 
 
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” will be shown on the display and the user may take out them at this time. If the rechargeable 
batteries are left in place 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. 
 
 
 
 
 
 
 
 
 

Note :   

z

 

The current cannot be altered once the setting has been confirmed in the initial stage. This prevents the user from changing the current setting 
accidentally while doing setting on other rechargeable batteries. If one wants to change the applied current afterward, the rechargeable batteries 
must be taken out and inserted again.   

z

 

The maximum charging current of the other rechargeable batteries are restricted by the current setting of the first inserted rechargeable battery. For 
instance, if the first inserted rechargeable battery is set to charge at 700 mA, then the second, third and 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.     

z

 

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). Four (4) seconds after the last key press the LCD will blink one time to indicate the end of 
changing. 

z

 

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 shown “000 mA”, the charging process will only resume once the temperature of the rechargeable batteries drops 
to a safe level. If overheat conditions continue to occur, the rechargeable batteries must be taken out to cool down and then charged at a lower 
current. 

 
 
 
 
 
 
 

z

 

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 

“Full” sign is shown -The battery 
is fully charged 

When the battery is overheated the 
charging will ceases automatically. 
“000 mA” will be displayed. 

Charging current: 200 mA 

Charge Mode 

After 4 seconds from the last key 
press, the LCD will blink once to 
indicate the setting is confirmed and 
the selected mode is activated   

Summary of Contents for BC-900

Page 1: ...t detection to protect rechargeable batteries from over charging z Minus delta voltage dV detection for charge termination z Damaged batteries detection z Discharge mode first discharging and then charging to remove memory effect of rechargeable batteries z Refreshing old rechargeable batteries by discharging charging cycles z Test function to check the capacities of rechargeable batteries z Charg...

Page 2: ...ther hand when charging three or four rechargeable batteries at the same time user may select a charging current of 200 500 700 or 1000 mA The estimated time of charging by various charging current is tabulated in Table 1 Table 1 Charging Time with various charging current Size of battery Battery Capacity Charging current selected Estimated charging time 1800 75 min 1500 90 min 1000 2 hr 15 min 70...

Page 3: ...le batteries are restricted by the current setting of the first inserted rechargeable battery For instance if the first inserted rechargeable battery is set to charge at 700 mA then the second third and 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...

Page 4: ...e and Table 2 within 8 seconds after inserting the batteries Or the display will blink once to indicate the end of setting and the current cannot be changed afterward z It may take up to several days to finish the refreshing process depending on the selected discharging current z The maximum refresh current is 1000 mA and is not affected by the number of rechargeable batteries inserted TEST MODE I...

Page 5: ...nt Full stage Instantaneous Battery voltage Trickle charging current Charging time elapsed Accumulated capacity Table 6 Various displays in Refresh Mode Various displays toggled by pressing DISPLAY key Stage in Refresh mode Voltage V Current mA Time hh mm Capacity mAh Ah During discharging processes Instantaneous Battery voltage Discharging current Discharging time elapsed Capacity during discharg...

Page 6: ...ot make any repair attempts to the units Return it to its original point of purchase for repair by a qualified engineer Opening and tampering with the units may invalidate its guarantee z Do not expose the unit to extreme and sudden temperature changes this may lead to damage to the electronic parts in the unit SPECIFICATIONS Input voltage for AC DC adapter 100 240 VAC Charging current range 200 m...

Page 7: ...hnology Ltd authorized service center La Crosse Technology Ltd will pay reasonable return shipping charges to the owner of the product Your La Crosse Technology Ltd warranty covers all defects in material and workmanship with the following specified exceptions 1 damage caused by accident unreasonable use or neglect including the lack of reasonable and necessary maintenance 2 damage occurring durin...

Page 8: ...y com All rights reserved This handbook must not be reproduced in any form even in excerpts or duplicated or processed using electronic mechanical or chemical procedures without written permission of the publisher This handbook may contain mistakes and printing errors The information in this handbook is regularly checked and corrections made in the next issue We accept no liability for technical m...

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