流量计是如何判断电池已经充满显示100%？

1、流量计是如何判断电池已经充满显示100%？

2、Taper Current  、CHG Current Threshold以及充电芯片截止电流，三者之间如何设定，帮忙举例说明，谢谢！ 

Three requirements must be met to qualify for Primary Charge
Termination:
• During two consecutive periods of Current Taper Windows:
Iavg1 < Taper Current and Iavg2 < Taper Current
• During the same periods: Accumulated change in capacity > Min Taper Capacity per Current Taper
Window
• Voltage > Charging Voltage – Taper Voltage

现在每次我看流量计显示100%时，AvgCurrent都是大于 TaperCurrent，这是什么原因