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Voltage drop

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Old Jun 22, 2022 | 02:15 PM
  #1  
Gjorgjija's Avatar
Gjorgjija
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Voltage drop

Hi,

​​​​​​I Have ambulance van, 1994 e350 7.3.
last week after charging the batteries i start the van and drive it 500 meters. After that i remove battery cables, how can I prevent the drain (it is not registered so I cannot drive it, so I run time to time).
Today I connect the cables but voltage was low on the interior voltage meter. I connect one more battery (from my car, to jump start it), voltage goes up, but when I turn the key in ON position, voltage drop to zero.
Can you have any advice? I really love the van, but over here there is noone can help me servicing it.
I am fighting with hard start, sponge brakes, and now this...
Here is video...
​​​​
 
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Old Jun 23, 2022 | 05:49 AM
  #2  
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tjc transport
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if the charged batteries are disconnected from the van and dying with nothing hooked to them, than the batteries are bad.
 
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Old Jun 23, 2022 | 12:13 PM
  #3  
Gjorgjija's Avatar
Gjorgjija
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Batteries are ok, indicator is green. On the video you see, I connect one more battery (jumpstart) from my SUV which is running, so happen that drop.
 
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