buy a small solar charger. Plug it into your cigarette lighter and leave in on your dash
Chemical reactions slow down in the cold. The electricity produced in a car battery is the result of chemical reactions between the sulfuric acid and the lead plates. Slow down those reactions and the battery is not able to produce its normal current.
friction
More than likely. Get the clamp fixed! When going at speed, the clamp will vibrate, and will only be half re-charging the battery (the alternator re-charges it during operation). This means that when you slow down, you may not be getting any charge to it at all. Either that, or its just not making contact with the terminal when you have slowed down.
it doesnt help being impatient
True
That varies with battery chemistry.
I think you mean slow down and speed up. slow down =slow, speed up=fast
Speed UP
how do you slow down when competing in skeleton?
cars slow down because of friction and when you push the brake pedal you automatically slow down
Best is a wire brush and baking soda. You can use grease to coat the terminals to slow down the corrosion.
Cold weather can slow down the chemical reactions inside a battery, which can reduce its ability to generate electricity. This can lead to a decrease in battery performance and a shorter overall lifespan.