voltage across battery when charging ?

Gearhead999 · 12-11-2005, 04:32 PM

To load test the battery. The car is off. The tester is hooked up to battery. The test puts an adjustable load on the battery so you can see what kind of reserve power it has with the load.

To test the charging system under load. You start the car and then load it up.

On a Load test for starter/charging system/batteries, you take the load probe [it's a clamp that you put around the wire to read amps] and put it on the bat. wire at the alternator, while the car is running. This will tell you what kind of amps the alternator is putting out, at the alternator before it gets to the car and battery.

~The Jester~ · 12-11-2005, 07:23 PM

Even if the battery is junk, shouldn't we still get a 14v reading on the terminals when the car is running?

What's the voltage on the battery with every thing disconnected? I mean JUST the battery. I'm still thinking that damn kill switch (SMOKED mine in no time) or a short somewhere.

This is killing me. Now I know how the wife feels when she watches her soap operas. I GOTTA KNOW!

12-11-2005, 04:32 PM	#1
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: voltage across battery when charging ? To load test the battery. The car is off. The tester is hooked up to battery. The test puts an adjustable load on the battery so you can see what kind of reserve power it has with the load. To test the charging system under load. You start the car and then load it up. On a Load test for starter/charging system/batteries, you take the load probe [it's a clamp that you put around the wire to read amps] and put it on the bat. wire at the alternator, while the car is running. This will tell you what kind of amps the alternator is putting out, at the alternator before it gets to the car and battery. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

12-11-2005, 07:23 PM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: voltage across battery when charging ? Even if the battery is junk, shouldn't we still get a 14v reading on the terminals when the car is running? What's the voltage on the battery with every thing disconnected? I mean JUST the battery. I'm still thinking that damn kill switch (SMOKED mine in no time) or a short somewhere. This is killing me. Now I know how the wife feels when she watches her soap operas. I GOTTA KNOW! __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

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