Quote: I'm sorry but we've been disconecting batteries for a lot of years and never blew a curcuit or gauge doing it. The new cars suffer from those syptoms but the older cars don't. You just pull the cable and the car will imediately die if the charging system is bad. You are disconeced for less than a 1/2 a second.
I know this used to be a widely used method, but that doesnt make it right. Any component with an IC (integrated circuit) is at risk. This means electronic voltage regulators, etc...
Just because its disconnected for a less than a second doesnt make it ok. If you stick your tongue in a 220V welder plug for less than half a second, does that mean you wont get a shock?
Also, the damage is often not immediately apparent, often times the component is damaged but still operates, and may do so for 6 months or 6 seconds, but its still damaged and will fail sooner than it would have originally. This goes for welding on a vehicle as well.
no disrespect intended.
Its an outdated method that should not be used on anything, especially when a voltmeter can be had for under 10 bucks. All you will know by disconnecting the battery with the car running, will be told to you by hooking up a voltmeter to the battery. Its probably even easier.
