LG KU950 Service Manual page 50

3. TECHNICAL BRIEF
3.10.3.3.2 Constant current charging
The PM6650-1M IC supports constant current charging of the main battery by controlling the charger
pass transistor and the battery transistor. The constant current charging continues until the battery
reaches its target voltage, 4.2V.
3.10.3.3.3 Constant voltage charging
Constant voltage charging begins when the battery voltage reaches a target voltage, 4.2V.
The end of constant voltage charging is commonly detected 10% of the full charging current (60mA)
• Charging Method : CC & CV (Constant Current & Constant Voltage)
• Maximum Charging Voltage : 4.2V
• Maximum Charging Current : 650mA
• Nominal Battery Capacity : 950 mAh
• Charger Voltage : 4.8V
• Charging time : Max 3 h (Except time trickle charging)
• Full charge indication current (icon stop current) : 60mA
• Low battery POP UP : 3.48V
• Low battery alarm interval : Idle - 3 min, Dedicated - 1min
• Cut-off voltage : 3.22V
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