A fully charged good battery is designed to last 21 days in the newer vehicles How old is your battery?
Check parasytic load on vehicle should be .07 amps
With the engine not running you should read 12.6 volts on a fully charged battery. With the engine running you should read from 13.5 to 15.5 volts at the battery posts.
About 2 days
Yes why not, you can recharge your truck PC by driving around. To recharge the PC first the truck battery should be charged. Driving recharges truck battery because every truck has a power generator inside it but you cannot recharge your truck battery if it is not working properly the acid level of the battery should be maintained properly. Better you check your battery before recharging battery.
Bad alternator? A fully charged battery should read approx. 12.8 without engine running With engine running should read approx. 13.8-14.2 volts
Should be battery Group Size 78.
Normally, no it should be fully charged if it is a fresh battery.
14.2
you should go to a car shop and get your battery checked and ask how long should u charge your battery.. or if you should get a new battery
Depends how flat it is and the capacity of the charger and also capacity of the battery. A 6 volt battery fully charged should read about 6.5 to 7 volts when fully charged.
Fully charged battery should have 12.6 volts. 75% charged 12.4 volts, 50% charged 12.2 volts, & 25% charged 12.0 volts.
6.4
A fully charged 12 volt automotive battery should have 12.68 volts.