You may not have to, as some batteries come with a little bit of charge in them. However, I would say to charge it before you use it, so its at full capacity.
buy a new battery.
A new battery doesn't mean a good battery. The new battery may be defective. Return it and get a new new one.
New batteries almost always come fully charged. If it was not then charge it with a battery charger and do not use your vehicle alternator to charge a dead battery. You may do harm to the alternator which is not built to charge a dead battery but is instead built to keep a good battery fully charged.
buy a new battery off of store.nintendo.com, if that does not work buy a new ac adapter from the same website.
Your battery will lose charge faster.
No it will not work
If the battery is defective get a new battery. If you just left something on and ran it down, charge the battery and keep going.
Dead Battery. Are you sure your battery can maintain or hold a charge?
it means that you can't charge the battery and you need to replace the dead batteries with new ones
try the battery fuse
your alternator is not charging your battery..u need to get a new alternator
Normally, no it should be fully charged if it is a fresh battery.