Wuben C3 flashlight: built-in charging overcharges?! - 18650

Anyone tried the new Wuben C3 flashlight yet? Just got hold of the Wuben C3 and tried some test. I monitored the Wuben C3 charging the included Wuben protected 2600mAh 18650 battery. (connected a USB meter to check the USB charge current) -- at around 0.40A charge current (USB side), the indicator on the Wuben C3 will switch from 'red' to 'green', when I removed the battery and checked its voltage, it was around 4.13v with my DMM. I reinserted the battery and continued charging it with

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