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New Battery Cap Style

Discussion in 'Shearwater Research' started by geoff w, May 16, 2016.

  1. geoff w

    geoff w Divemaster

    # of Dives: 500 - 999
    Location: malibu
    848
    194
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    I received a somewhat unclear email from Shearwater last week:

    Hello Shearwater Divers,

    We have made improvements to the battery cap which fits the NERD and all versions of Petrels including DiveCAN controllers. The new caps cannot be installed on old units. If you would like to order replacement or spare battery caps please contact your local Shearwater Dealer. A map of all Shearwater Dealers can be found by clicking here.

    Petrel/NERD Battery Cap Improvements
    Purpose: To improve the sealing performance and O-ring life span, the battery compartment O-ring gland design has been changed from a crushed gland to a radial gland. Identification of the new radial cap can be made by observing the differences in the following table:

    The original battery cap is 21021.

    The new cap with blue o-ring is 21021-01.

    The cases which take the new cap will be engraved RC under the strap.

    Regards,


    Lynn Partridge

    By old units, does this mean before Petrel 2s (like the original Petrel and the Predator), or earlier production run on Petrel 2s? My Petrel 2 is a little over a year old. The email has some images and some screw heads that make no sense in the context of the battery compartment, but no example of where to look for the RC engraving or what it looks like. Does anyone have a picture of the RC indication?
     
    TTPaws likes this.
  2. BenjaminF

    BenjaminF Photographer

    # of Dives: 200 - 499
    Location: Israel
    370
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    I've been trying to figure this out too. The email wasn't too clear...
     
  3. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,826
    23,167
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    Look for "RC" under the strap. I'll be doing that later on. However, if it has the older cap, odds are you can't use the new cap.

    As an aside, does anyone know what size o-ring it takes?
     
  4. Lorenzoid

    Lorenzoid idling in neutral buoyancy

    # of Dives: I just don't log dives
    Location: Atlanta, USA
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  5. geoff w

    geoff w Divemaster

    # of Dives: 500 - 999
    Location: malibu
    848
    194
    43
    Lorenzoid likes this.
  6. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,826
    23,167
    113
    I couldn't figure that out either. :D
     
  7. geoff w

    geoff w Divemaster

    # of Dives: 500 - 999
    Location: malibu
    848
    194
    43
    I thought the o-rings are supposed to be the standard size DIN regulator o-ring, since technical divers always have spares of that size. Instructions are at Petrel Battery Cap O-Ring Guidelines - Shearwater Research and it looks like a 112 o-ring
     
    The Chairman likes this.
  8. JohnRom

    JohnRom Divemaster

    # of Dives: 2,500 - 4,999
    Location: Ottawa Canada
    85
    55
    18
    Interesting wording on the announcement. Reading the linked article and the responses by Shearwater to the questions I can see where the confusion comes from. This is not a "new" "replacement" cap, it is a new cap design and how to tell if you unit has the old design or the new design so "if" you need to replace your existing cap for some reason you can tell which cap design to order. In other words, if you have damaged your cap and need to replace it, look at the pictures to identify if you need to order the old design or the new design. I have no idea what the pictures of the screws are for.
     
  9. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
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    The screws are different on the two caps; look inside the cap. It is an additional identifying aspect so you don't order the wrong cap.
     

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