Check if the drill and the battery can be connected normally. After the connection, the drill runs normally.
检查电钻与电池能否正常连接，连接后电钻运行正常

Make sure the on&off switch has the speed adjustion function.Press the switch deeper,The speed will be faster. Release the trigger and  the tool stopped immediately.
检查启动开关是否有速度调节功能，按更紧速度是否更快，松开开关，工具是否能即刻停止转动。

Plug in the battery,  make sure when press the direction switch left and pull the trigger, the drill is running in clockwise. At least try 3 times
插上电池，当将方向开关往左推并按下开关，电钻是否按顺时针转动，当将方向开关往右推并按下开关，电钻是否按逆时针转动。至少试3次

check whether the LED light works or not
LED是否亮

Install the sleeve, hold the sleeve, and slowly run the tool to ensure that the tool has an impact function.
装上套筒，握住套筒，缓慢运转工具，确保工具具有冲击功能。

 Make sure that there is no mechanical noise during turning；
确保转动时无机械噪音；

Look over all of the drill and battery and search for any scratches, marks, paint or silicon. Any visual defects should disqualify the product.
查看整个电动起子和电池，并查看是否有明显划痕，油漆,胶圈外露,螺丝松动。 任何视觉上的缺陷都不应该出货。

Check the screws are intact, ensure no screws were missing on the drill.
检查是否有螺丝松动或不见，确保电动起子上没有螺丝松动或不见。

Finally, check whether packed with all the neccessary accessories
最后检查所有的配件是否有遗漏

Check the charger and plug whether worked normally.
检测充电器和插头是否正常工作