Only For Training And Service Purposes - LG GD310 Service Manual

3. Technical Brief
3.3.2. Charging
SM-POWER provides together with an external p-channel FET Siliconix Si3455 an external
AC-adapter a complete charge control function for charging of Li-Ion or Li-Ion-Polymer batteries.
Either a 1-cell Li-Ion or Li-Ion-Polymer battery with 4.1, 4.2 or 4.4 Volts may be used.
4.2V~3.73V
1. Charging method : CC-CV
2. Charger detect voltage : 4.0 V
3. Charging time : 2h 40m
4. Charging current : 440 mA
5. CV voltage : 4.2 V
6. Cutoff current : 44 mA
7. Full charge indication current (icon stop current) : 44 mA
8. Recharge voltage : 4.16 V
9. Low battery alarm
a. Idle : 3.48 V ~ 3.35 V
b. Dedicated : 3.48 V ~ 3.35 V
10. Low battery alarm interval
a. Idle : 3 min
b. Dedicated : 1 min
11. Switch-off voltage : 3.35 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)
LGE Internal Use Only
3.72V~3.59V 3.58V~3.49V
Figure 5. Battery Block Indication
3.48V~3.35V
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Only for training and service purposes