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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
LGE Internal Use Only
3.2.5. Charging
GM200 charge the battery using an external charging IC of Intersil ISL9221 for Li-Ion battery in 4.2 Volts
level.
1. Charging method : CC-CV
2. Charger detect voltage : 4.0 V
3. Charging time : < 3h
4. Charging current : 650 mA
5. CV voltage : 4.2 V
6. Cutoff current : 97 mA
7. Full charge indication current (icon stop current) : 97mA
8. Recharge voltage : 4.15 V
9. Low battery alarm
a. Idle : 3.54V
±
0.05V
b. Dedicated :3.54 V
±
0.05V
10. Low battery alarm interval
a. Idle : 3 min
b. Dedicated : 1 min
11. Switch-off voltage : 3.33 V
12. Charging temperature adc range
a. ~ -5
℃
: low charging voltage operation (3.6 V ~ 3.9 V) .
b. -5
℃
~ 50
℃
: standard charging (up to 4.2 V)
c. 50
℃
~ : low charging voltage operation (3.6V ~ 3.9V)
3.75
±
0.05V
3.54
±
0.05V
3.33
±
0.05V