How long do save batteries last?

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Tags

1. #obviously
2. #hardware
3. #where
4. #games
5. #inside
6. #nintendo
7. #expected
8. #progress
9. #point
10. #console
11. #though
12. #expect
13. #lifespan
14. #batteries
15. #cartridges
16. #years
17. #forever
18. #longer