give up, pay me or a mechanic to look at it. clearly beyond your understanding.
As long as your charging system is functioning properly your car battery will not drain as you are driving. A properly functioning electrical system will charge a battery as you drive, and the consistent highway speeds are best for optimum charging. If all you do is short trips, especially with a break in the middle where you restart your engine than you will not give the battery sufficient opportunity to charge and you will slowly drain it. If you consistently take short trips I would get a automatic battery charger and plug in your car at home to keep it charged. If the belt was slipping then you wold definitely have charging system problems. Also, keep on mind batteries are not as powerful in very cold weather, so it is it especially important to keep them charged in the winter in the winter
The battery is for starting the car and nothing more. The alternator is what did it. Nothing to do with speed either. Getting the belt changed should do it.
I've got a 2005 BMW X3. Last winter the battery gave up on me and I'm trying to figure out why. The car was driven two times a week and maybe 10 minutes each time(when I went to get food). One day I went to start it, it started with a bunch of lights on the dash(oil temp, coolent temp etc). Idled fine for a minute then started to give up slowly.
I changed the battery and it drove fine(also replaced the alternator belt recently because it was starting to crack badly and make a slight noise).
The day before the battery died on the car I took it for a 10 minute drive on the highway and did an acceleration pull up to 85mph.
So did that acceleration pull I did drain the already weak battery? OR did the alternator belt slip that one time because it was old and cracked?(I read that if the alternator is a problem a lot of dash lights show up).
