[COLVERT]

Originally Posted by Yorkshire GOC

I did a 40 mile journey yesterday - should this not charge the battery up to 12.8 volts?

NO, not a chance.

For sake of argument let's say that 40 mile journey took an hour. ( @ 40 mph. )--That would equate to ONE HOUR on a charger !!!

Batteries on petrol engine cars need 24 hours on a charger.

Diesel 30 hours if in both cases the batteries start as flat ( Discharged. )

An alternator is regulated and charges a battery at roughly the same rate as a mains charger.

Example.---24 hours charge on a petrol car means driving for 24 hours at, lets say 30 mpg, at £7.00 a gallon.
Cost--£7.00 times 24 = £168.00-------Distance covered 720 miles-

Over night on a charger = £1.00 maybe.--

All that driving would give you a headache through lack of sleep.---




Colvert.