主电池 meaning in English

main battery
main cell

My primary cell was damaged by a plasma attack
主电池刚才被等离子攻击打坏了
Primary batteries . specification for batteries not included in parts 1 and 2
主电池.第3部分:不包括第1第2部分的电池规范
Gets the reported full charge lifetime of the primary battery power source in seconds
获取报告的主电池电源的完全充电寿命（以秒为单位）。
Remove the lens , the viewfinder piece , cf - card , main battery and back - up battery . if you have the shoulder strap mounted remove that too
第二步,拿掉镜头,眼罩(如果你不会,就看看说明书) , cf卡,主电池和后备电池,肩带