how to test laptop power adapter

2:36

8:48

11:10

6:17

8:21

8:21

9:54

3:50

2:23

3:47

6:53

1:28

2:45

2:29

15:53

15:59

1:56

2:25

2:05

6:07

5:07

6:10

2:25

5:07

6:10

5:18

2:15

9:55

18:07

3:25

2:25

1:47

3:09

24:36

3:19

4:30

22:34

7:35

6:31

1:56