With a battery charger or alternator.
how Can you charge multiple 12 volt batteries with a car?
No, it is not necessary to disconnect the batteries.
Yes, if the batteries are rechargeable
The pad can charge as many batteries as it is destined to charge. Most pads charge about 4 batteries at a time.
NO!
Batteries importance is in their inherent capability to store an electric charge.
Batteries charge nothing they hold a charge.
I am sorry, but I think that this is impossible. It must have batteries to function.
if they are rechargeble batteries then yes you can but they wont stay charged for that long
False assumption.
they don't i have left batteries on concrete for months and had on loss of charge.
Wii remotes run on 2 AA batteries but if you can get a pair of recharable batteries then yes you would need to charge them. (Pick your brand carefully, some batteries run out fast!)