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Part 4: Technical Reference
2.6 Lithium Ion Battery Recharging
2.6.1 Switching to recharge mode
The lithium ion battery must always be installed in the printer as the recharging
circuit for the battery is inside the printer. When the printer is in stand-by mode or
soft power OFF, the battery begins to recharge. Recharging is stopped when printing
starts as the power supply from the Universal adapter is limited. Once the printer
returns to the stand-by mode, the battery resumes recharging from where it stopped.
A total of 6 hours recharging is required for the battery to reach its full capacity.
Recharging will begin when all of the following conditions are met.
1) The printer is standing by* or is in soft power off. (Connect the Universal adatper)
2) Ambient temperatures is between 5 and 35°C; battery voltage is more than 6.5V.
3) Recharge current is less than the set value; the open over discharge voltage is less
than 12 V.
* When the BJ cartridge is installed, the head cap must be on.
When the scanner cartridge is installed, the driver must be closed.
2.6.2 Recharge protection
The printer checks the following items at 100ms intervals while the battery is
recharging. In case of an abnormal occurrence, recharging is immediately stopped
and WARNING or ERROR messages will be displayed.
Check Items:
1) Proper Universal adapter drive mechanism
2) Lithium ion battery installation
3) Normal temperature of lithium ion battery
4) Normal voltage of lithium ion battery
5) Recharge time exceeding 6 hours
When an error occurs:
a) Unless both check items 1) and 2) are "NO", recharging will not resume.
b) When check item 3) is "NO", recharging will stop and a FAILED BATTERY
WARNING is displayed.
c) When check item 4) is "NO", recharging will stop and a FAILED BATTERY
WARNING is displayed.
d) When check item 5) is "YES", recharging is terminated.
2.6.3 Recharge control
When the printer is powered on, the electrical current for recharging is first measured.
If the current exceeds the set value, presuming it is a recharge circuit failure,
recharging is stopped and a FAILED RECHARGE CIRCUIT ERROR message is
displayed.
Also, when the battery begins charging, the soft timer goes on and if the voltage does
not reach 7 V after 90 min, recharging is stopped and a FAILED BATTERY WARNING
will be displayed. Note that recharging will not start unless the battery and the
ambient temperatures are between 5°C and 35°C. NO BATTERY ERROR will be
displayed.
Recharging will begin once the battery and the ambient temperatures reach the 5°C
and 35°C range.
4-18
BJC-50
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