Do Nintendo eShop cards expire?

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Tags

1. #temporarily
2. #eshop
3. #required
4. #digital
5. #single
6. #there
7. #balance
8. #where
9. #expire
10. #unredeemable
11. #unused
12. #nintendo
13. #associated
14. #otherwise
15. #balances
16. #account
17. #stored
18. #except
19. #maximum
20. #result