les v,
What 7777 said sounds right with one exception is on the equalize charge cycle on low usage equipment - I went to a different school & recommend that the equalize charge cycle should be done every 2 months. The equalize charge cycle is designed to bring all the battery cells up to equal voltage to help extend battery life. (cells with lower voltage than others will weaken the other cells).

But you will not be able to recharge that battery with a portable generator (not enough amp out put). If you continue to to so you with "kill" the battery & probably not due your generator any good.
Wait until you get the proper charger hook up to the correct power supply. The max. out put of the charger you have should equal the amp/hour capacity of the battery in the truck you have + or - 5%. Check it out.