You enabled passcodes in the Settings directory. You will have to plug it into your computer and restore from iTunes if you don't remember what the code is.
it charge's faster when you put your password in thats why
When an iPad says that it is not charging, it simply must mean;YOUR iPAD IS NOT CHARGING!Silly numpty head! x
Take your iPad the Apple Store, They may be a Problem with the 30pin Connecter on your iPad.
To charge something, plug it into the wall. Charging a phone, or an iPad, is something that should be done often, and it can be done using the charger it came with.
how to set kindle password on ipad
Yes, a cable made for the iPad will work with the iPad.
try charging your battery or maybe you completely turned off your ipad
No you wouldn't have to unless your case interfered with the charging of your iPad.
No, your WiFi password is stored as an encrypted file on your iPad. If you don't know the password, you will have to ask someone who does, or reset your router and re-enter your security settings from the factory defaults.
The USB Port on an iPad is for either charging, or syncing media (music, apps, etc.) to the device.
iOS 5 should be compatible with all iPad models. To install, you must plug your iPad into an iTunes-authoized computer at your house and wait to be given the prompt to update your iPad. If you don't receive a prompt, click on your iPad's name on the sidebar and click "Check for updates". NOTE: You can no longer download iOS 5 for any iPad other than the original iPad. If you go through this procedure with an iPad 2 or higher, you will instead get prompted to download iOS 7.1.
There is no wifi password to get on the wifi in your home, unless you set a password yourself.