symptom

一個正常嘅V20 battery完全就位,方向掣完全前推或後推,工具冇motor聲、LED反應或夾頭動作。死機狀態喺工具靜止時持續。

一個正常嘅V20 battery完全插好,方向掣完全 1. 將方向掣置中,移除battery,並檢查工具同電池包有冇液體、膨脹、裂紋、熔化或燒焦。

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