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4

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 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 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.   
 
 
 
 
 
 
 

Note: 

z

 

By pressing the MODE key within 8 seconds after inserting the rechargeable batteries, the Refresh mode can be selected. (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.) 
Then the user may also select different discharging current by pressing the CURRENT key (see “Note” in Discharge mode 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   

In the Test mode the rechargeable batteries will first be fully charged and then discharged to determine the capacities. Finally, the rechargeable batteries 
are charged up again and the capacity in (mAh) of (Ah) will be estimated and shown after the discharging ends.   
By pressing the MODE key within 8 seconds after inserting the rechargeable batteries, the Test mode can be selected. (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.)

 

 
 
 
 
 
 
 
 
 
Note: 

z

 

After selecting the Test mode the user may select different charging currents in the Test mode by pressing the CURRENT key, within 8 seconds 
after the batteries are inserted. The afterward-discharging current will be half of the selected charging current (see Table 3).  

 

Table 3. TEST MODE Current 

User-selected 

Charging current 

200 mA 

500 mA 

700 mA 

1000 

mA 

Thereafter 

Discharging 

current 

100 mA 

250 mA 

350 mA 

500 mA 

 
 

z

 

The maximum charging current is 1000 mA and is not affected by the number of rechargeable batteries inserted. 

z

 

After the test mode is finished, the display will shift between the “Full” sign and the battery capacity (in mAh or Ah) automatically in 3-second 
intervals until the rechargeable batteries are removed. The user can switch to other displays by pressing the DISPLAY key. 

 
 
 
 
 
 
 
 
 

Refresh mode (the battery is 
being discharged) 

Discharging current: 250 mA 

Test mode 

The Charging 
current in (mA)   

Battery capacity displayed in 
(mAh) as the checking is 
finished in Test mode.     

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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