What does up book and charge have in common?
I read a book by an electrical engineer who said, "When lightning strikes the earth. there is a positive charge in the earth from which sends runners up toward the base of a cumulonimbus cloud which has a negative charge. The negative charge sends out runners toward the runners of positive charge. When the two charges meet, the lightning charge goes toward the earth and the result is a bolt of lightning.
Yes, it is charged all the time on the car by the alternator. Just hook the battery charger up and charge it. Just make sure to connect the cable correctly. Additional answer If the battery's flat and you want to charge it without removing it from the car (a common occurrence), just connect it to a charger.