K60電池架似乎是串連設計
CREE XHP70 Maximum DC forward current 2400mA @ 12V, 4800mA @ 6V
幾乎是MK-R耗電流的兩倍, 較低內阻/能提供較大電流的電池自然是首選
在官網K60產品頁的caution裡有這麼一段話
highly recommend using unprotected high drain battery (ARC18650H-250A) which at least 20A 2500mAh, the circuit might be tripping if use protected one
