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Thread: Battery voltage

  1. #1
    Potential Tuner
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    Battery voltage

    Can you use an equipment to maintain the battery voltage of the vehicle? (0.4 amps tops)We use it while writing with other tools.

  2. #2
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
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    We do not recommend it.
    You can open a support ticket here https://support.hptuners.com/

  3. #3
    Potential Tuner
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    Oct 2015
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    Thanks, so the minimum voltage available will be 11.7v?

  4. #4
    Tuning Addict 5FDP's Avatar
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    Or whatever the battery charge on the vehicle is.

    Of course you wouldnt try to write a tune with a low battery anyway, but most battery's should be 12 to 12.7 if fully charged and working correctly.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
    GM recommends the use of an approved power supply like the Midtronics PSC 550 Battery Maintainers.

    http://sandyblogs.com/techlink/wp-co...ink-2013-F.pdf

  6. #6
    Tuner in Training
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    Curious here, we just upgraded to whatever Snap-On's latest jump cart is and it has a specific 'Flash Reprogramming' mode. Documentation is slim but the manual says the unit will deliver up to an additional 60A if required during flashing (holy crap what PCM pulls 60A during a flash??). We tried it when flashing a race tune on a customer's Ford 6.4L with their DashDAQ. It appears that the unit sacrifices charging performance for voltage stability when doing this.

    Anyone have any thoughts? I've never hooked a maintainer or anything up when using the MVP since that what was instructed per the manual.

  7. #7
    Quote Originally Posted by 757performance View Post
    Curious here, we just upgraded to whatever Snap-On's latest jump cart is and it has a specific 'Flash Reprogramming' mode. Documentation is slim but the manual says the unit will deliver up to an additional 60A if required during flashing (holy crap what PCM pulls 60A during a flash??). We tried it when flashing a race tune on a customer's Ford 6.4L with their DashDAQ. It appears that the unit sacrifices charging performance for voltage stability when doing this.

    Anyone have any thoughts? I've never hooked a maintainer or anything up when using the MVP since that what was instructed per the manual.
    Not sure about the Snap-On unit, but it may be similar to the other Midtronics approved device the Midtronics GR8 Battery Diagnostic Station.

    http://www.midtronics.com/shop/produ...ttery-chargers