Progress Of Charging - Canon DC10 E Service Manual

3-2-2 Progress of Charging

The IC3201 starts a trickle charge under control of the SUB MI-COM (IC100). The trickle charge continues until the battery voltage
reaches 6.17V. At the point when 6.17V is reached, the IC1800 starts a 808 mA quick charge. Then, the charge current decreases
gradually with the progress of charging (because of an increase in impedance of the battery). When the charge current becomes 70 mA
or less, the end-of-charging indication is provided. Thereafter, supplementary charging is performed for 90 minutes at maximum until
the charge current becomes 34 mA or less.
LED flashes once
Quick charge 808mA
When battery voltage
reaches 6.17V, quick
charge starts.
An error is indicated if the battery voltage becomes 5.5V or lower during quick
charging or constant-voltage charging.
An error is indicated if the battery temperature is not within the range of
−10 C to 52.5 C.
Trickle
81mA
When the battery voltage
reaches 5.2 V, the trickle
timer (2) is started.
Trickle1 Trickle2
Quick charge timer
timer timer
6min. 10min.
max max
Timeout Timeout
error error
LED flashes twice
2-flash
Timeout
timer
error
90min.max 258min.max
Total timer
336min.max
LED lights up steadily
480mA
70mA
Full charge
Supplementary charge timer
indication
at timeout
Full charge
indication
at timeout
Fig. 5
9
DC10 E, DC20 E
TECHNICAL DESCRIPTION
34mA
Elapsed
time
90min.max