13-12-11, 09:31 AM
i thought that a stand alone battery (as in not connected to an alternator/chargering system) the ah that is used shouldn't be more than 10x greater than the battery. So a 40ah battery is best at 4ah or less.
I put my 12v light onto a car battery the other day that was fully charged to 12.8V. 45mins later the light was dimming and the battery was on...10.5v(ish)...(cant quite remember :o ) Hence me wanting a LED light with a lower current draw.
If you have a battery connected to a charger and then you connect a 12v light to the battery at the same time...it's o.k isn't it? (only like what happens in your car/bike?) As for it drawing more power than the battery charger is putting in...that will be down to the charging pattern of the charger wont it?
These might seem like odd questions but just bare with me. 8)
I put my 12v light onto a car battery the other day that was fully charged to 12.8V. 45mins later the light was dimming and the battery was on...10.5v(ish)...(cant quite remember :o ) Hence me wanting a LED light with a lower current draw.
If you have a battery connected to a charger and then you connect a 12v light to the battery at the same time...it's o.k isn't it? (only like what happens in your car/bike?) As for it drawing more power than the battery charger is putting in...that will be down to the charging pattern of the charger wont it?
These might seem like odd questions but just bare with me. 8)