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  1. #1

    New Starting Bank 8V71Ti

    All;

    While there's a thread about re-inventing the house bank here, what about new battery technology for starting banks?

    I'm trolling for comments on using 16V racing batteries for the starboard starting bank.
    A few battery sales folk who love selling me 4D 8V batts are suggesting I try them out... They're a ton easier to manage than the 100 lb. 4d's. and I'll save space in the battery boxes.

    If anything I'll have to build up some blocking to keep them where I put them if we go this way.

    He also suggests going with four them them... two in series, paralleled with another series set.

    Comments please? Has anyone done this? Important fact: 32V starting and house banks on Chartmaker.

    This is the starboard bank which is starting only. Dave Wigler on here speaks favorably about using the golf cart batts too... but when i discovered the 16V racing batteries as an option, it sort of turned me around on new possibilities.

    Thanks.
    Captain Chuck Bullett; W1AEK
    Chartmaker 1978 53MY Hull #522
    On-Air 2014 31 Benetau Oceanis Sloop
    chuckbullett@gmail.com

  2. #2

    Re: New Starting Bank 8V71Ti

    How do the specs compare to the current bank? Do you have a link to the specs?
    Sky Cheney
    1985 53EDMY, Hull #CN759, "Rebecca"
    ELYC on White Lake--Montague, MI

  3. #3

    Re: New Starting Bank 8V71Ti

    What CCA is required for an 8V71TI?
    Prometheus
    1978 53' MY Hull #529
    Viera, FL

  4. #4

    Re: New Starting Bank 8V71Ti

    Quote Originally Posted by Photolomy View Post
    What CCA is required for an 8V71TI?
    Some in the archives stated recommended was 1900.
    1978 53' Motor Yacht "LADY KAY V"
    Hull number 524
    Chesapeake Bay

  5. #5

    Re: New Starting Bank 8V71Ti

    --- The poster formerly known as Scrod ---

    I want to live in Theory, everything works there.

    1970 36C375

  6. #6

    Re: New Starting Bank 8V71Ti

    Quote Originally Posted by oscarvan View Post
    Some in the archives stated recommended was 1900.
    That’s at 12 volts. He’s got 32 volts.
    1977 Hatteras 58' MY, Hull No. 304, 4-stateroom galley up model with 8V71TIs in Knoxville, Tennessee

  7. #7

    Re: New Starting Bank 8V71Ti

    Quote Originally Posted by davidwigler View Post
    That’s at 12 volts. He’s got 32 volts.
    Yeah, I was about to say. 8v195's are only rated at 980 CCA. And they are hooked up in series, so the amps are still 980. But that makes sense now, 1900 at 12v.

    The 16v racing batteries should actually work, 4 of them at least, in series and in parallel. And they only weigh ~40 lbs each. And have a 12v tap. Longevity though?
    Prometheus
    1978 53' MY Hull #529
    Viera, FL

  8. #8

    Re: New Starting Bank 8V71Ti

    Quote Originally Posted by Photolomy View Post
    Yeah, I was about to say. 8v195's are only rated at 980 CCA. And they are hooked up in series, so the amps are still 980. But that makes sense now, 1900 at 12v.

    The 16v racing batteries should actually work, 4 of them at least, in series and in parallel. And they only weigh ~40 lbs each. And have a 12v tap. Longevity though?
    Flag terminals? Because automotive terminals are worthless.
    Sky Cheney
    1985 53EDMY, Hull #CN759, "Rebecca"
    ELYC on White Lake--Montague, MI

  9. #9

    Re: New Starting Bank 8V71Ti

    And if they're AGM, good luck finding a 32v charger to charge AGM. They won't last long if you use the lead/acid charge profile.
    Sky Cheney
    1985 53EDMY, Hull #CN759, "Rebecca"
    ELYC on White Lake--Montague, MI

  10. #10

    Re: New Starting Bank 8V71Ti

    Just buy the OEM Rolls 8v batts and be done with it for the next 10-13years. You'll save money in the long run. But what do I know?

    I know nothing. I'm not an electrical engineer. So, I just go with what the original engineers did. And that seems to work great.
    Sky Cheney
    1985 53EDMY, Hull #CN759, "Rebecca"
    ELYC on White Lake--Montague, MI

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