Buy a Nintendo eShop Gift Card and start shopping on the eShop! Redeem the gift card directly into your Nintendo account via Nintendo's, Nintendo Switch. Once redeemed, you can start buying any Nintendo games available on the eShop.
Step 2: Select the Nintendo eShop icon [second] in the HOME menu.
Step 4: Once successfully loaded the voucher, the funds will be loaded into the account directly. You may also relog the account to check on the balance added.
Step 5: You may then pay for the new games/pack using the balance in the account. Enjoy!