LG Electronics KS360 service manual Charging, 2V~3.74V 74V~3.64V 64V~3.45V 45V~3.35V

3. TECHNICAL BRIEF

3.3.2 Charging

KS360 charge the battery using an external charging IC of Intersil ISL9221 for Li-Polymer battery in 4.2 Volts level.

4.2V~3.74V 3.74V~3.64V 3.64V~3.45V 3.45V~3.35V

Figure 5. Battery Block Indication

1 Charging method : CC-CV

2 Charger detect voltage : 4.0 V

3 Charging time : 2h 30m

4 Charging current : 400 mA

5 CV voltage : 4.2 V

6 Cutoff current : 110 mA

7 Full charge indication current (icon stop current) : 110 mA

8 Recharge voltage : 4.15 V

9 Low battery alarm

a. Idle : 3.45 V ~ 3.35 V

b. Dedicated : 3.45 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)

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