BATTERY

Autozone is good... I use them You can hook up a 9 volt battery to the car via cigarette lighter... with ignition to position one and you won't lose any settings.

Hey you can also conect the new battery whith an extra cable and a regulator, before disconnect de old battery. Virrey

I don't know whether its good practice or not, but the shop that replaced my last battery did it without shutting the engine off. The alternator kept voltage on the system and there was no problem.

EJ > I have a 1989 560 SEL. I have to replace my battery because it's showing

Do not do that... will fry your alternator.

It didn't fry mine.

EJ > Do not do that... will fry your alternator.

Ernie Willson ha scritto:

You're a lucky guy. But you know Murphy'laws... And there's more than a serious opportunity to fry up sigma converter in the alternator. So my suggestion is to purchase a jump starter (a small battery, usually packed up with lots of accessories, i.e. light, compressor and so on and to plug it into the lighter plug. This will keep all electronics up to

Just as an example of what I mean for jump starter:

I agree with you both (Cordy and Tiger) that it is not the best practice to remove the battery with the engine running. What I objected to was the absolute statement that it would "fry your alternator". I assure you it did not. Its been two years since the battery was replaced. How long does it take to fry an alternator :^))

EJ > Ernie Willson ha scritto:

You were indeed lucky.

Battery acts like a reservoir or buffer in the charging system. The alternator also relies on the battery voltage to maintain the correct output. Missing either in the system MAY (not always though) damage anything that are still connected.

Ernie Wills> I agree with you both (Cordy and Tiger) that it is not the best practice