How do you know when a Vive controller is charged?

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Tags

1. #provided
2. #adapters
3. #status
4. #shows
5. #power
6. #charged
7. #light
8. #indicator
9. #cables
10. #controller
11. #fully
12. #single
13. #charge
14. #plugged
15. #white
16. #green
17. #using
18. #battery