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Thread: Delco ETR Current Draw

  1. #16
    Senior Member 85_Ciera_Rebuild's Avatar
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    I've never tried to recover a "dead battery."

    What happens here?

    12V
    REPAIR
    16.5V | 1.5A | Any Capacity
    An advanced battery recovery mode for repairing and storing old
    damaged, stratified, or sulfated batteries. When selected, a red
    Press & Hold

    Just using jumper cables might put a surface charge on a dead battery...then use charger



  2. #17
    Senior Member Century7667's Avatar
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    1996 Buick Century Limited 3100 V6 / 1995 Buick Century Special 3100 V6 / 2001 Chevy S-10 LS 2.2L
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    Quote Originally Posted by 85_Ciera_Rebuild View Post
    I've never tried to recover a "dead battery."

    What happens here?

    12V
    REPAIR
    16.5V | 1.5A | Any Capacity
    An advanced battery recovery mode for repairing and storing old
    damaged, stratified, or sulfated batteries. When selected, a red
    Press & Hold

    Just using jumper cables might put a surface charge on a dead battery...then use charger
    Not real sure. I think too much too soon too quick will boil the battery. I tried a 5 amp charge on a discharged batter a couple of years ago, got hot and cooked it pretty good....and it was still dead in the end. I'm going to setup a really small current rig and see what happens.

    Ken T.

  3. #18
    Senior Member 85_Ciera_Rebuild's Avatar
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    Quote Originally Posted by Century7667 View Post
    Not real sure. I think too much too soon too quick will boil the battery.
    When using those home-made 12 volt alternators on semi-trucks, tractors, which have up to four batteries, these good batteries will not tax the alternator.

    Yes, a high amperage battery charger can cook a battery, but these may not monitor a battery's voltage, like my home-made 12 volt alternator does.

    Hence, a voltage sensing charger is best to use, but I was suggesting to put a surface charge on a dead battery.

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