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Old 04-29-2014, 07:05 AM   #15
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Ford Super Duty Owner
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Location: Lowell, Arkansas
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Three posters told you that the battery was no good, or toast. They arrived at these conclusions from previous experiences. Like I've said time and time again. One persons experience and fix for an electrical problem may not be the same fix for the next problem because the circumstances are probably different.

Electrical problems must be checked step by step before you begin to draw any conclusions or understand the problem. When you skip steps you start chasing your tail and spending $$$$$ that may not fix the problem.

Most DIY'ers do not know how or don't have proper testing equipment to correctly LOAD test a battery. Checking the voltage is just a guess for some issues. You have to determine the batteries ability to deliver a current draw and a load test will do that.

Think of the battery as an ELECTRON pump. The voltage is the pressure it can maintain while it delivers the electron flow (CURRENT or (LOAD). You have to have both pressure and load for things to work. We can measure pressure with a volt meter but can's easily measure current flow under heavy load.

The battery people told you that your battery passed the load test and to charge it for another 24 hours. That will again determine if the battery will fully re-charge and you want to know that. Because you drew it down so low they just want to make sure. I'd have it load tested one more time. If it passes you should be good to go. Did you do any internal damage to the battery. Maybe you did and maybe you didn't. So far it's passed one load test. If it passes the next one you're probably good to go.


TeJay Auto Instructor/4-yrs USAF/ Liz: RN/ WBGO 2014 Vista 30T/ F-53/CHF/5-Star/Koni * Bella & Izzy * Golden /Cocker mix/ Louie The Cat* All Retired
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Old 04-29-2014, 08:01 AM   #16
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Originally Posted by emcee View Post
The chassis battery was at 1.4 volts when I tried to use the battery boost. Nothing happened. I then connected my battery charger but it would just bounce from one end of the scale while something (probably the aux start solenoid) clicked in time.
The needle on the meter of my 55/10/2 amp "automatic battery charger" also bounces from one end of the scale to the other rapidly... if/when I attempt to charge a dead, or nearly dead, battery... while the battery is connected to the coach.

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Old 04-29-2014, 08:44 AM   #17
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Disconnect the ground cable at the battery and use 2 amp mode.

Let it soak for a few days.

Tony & Lori
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