4 Sevens

View Poll Results: Which D battery do you think is better?

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  • Powerizer

    2 25.00%
  • Tenergy

    6 75.00%
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Thread: Powerizer or Tenergy D cells?

  1. #1
    Flashaholic* lasercrazy's Avatar
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    Help Powerizer or Tenergy D cells?

    I need a bunch of rechargeable D cells for a project I'm working on. I've narrowed it down to these to cells but which one is better?
    http://www.batteryspace.com/index.as...ROD&ProdID=709
    http://www.batteryjunction.com/1dni10reba.html

    These will be under a constant 10-15 amp load.
    Favorite lights: XeRay 75W BarnBurner | Vec Twin 55W HID mod w/ LSD D pack | Amondotech Iluminator with 12D cell pack | Modded 2MCP vector | 2C ROP Low | 6D Quad Lux 3 Mod | 2C lux5 mod | Camo 3D red mod | 3D ssc Mod | Costco 2AA: R/B, Blue, Cyan, R/O | Aleph 19 UV | 193mw PGL 3 | Ssc Garrity hl mod

  2. #2

    Default Re: Powerizer or Tenergy D cells?

    I've got Tenergy's 10,000 mA/hr D-cells, but not Powerizers, so I can't make a comparison between those two. I do have Accupower's LSD 10,000 mA/hr D cells called 'Evolution' that I got from Thomas Distributor and the Evolutions are a bit better and much more expensive at about $11-12 each. I don't have a rig to test D cells to measure their acutual capacity but the Tenergy's are a 'mild okay'. Like many batteries that are over rated I am not sure if I am getting a full 10,000 mA/hr possibly more like 7500 mA/hr and that observation is based on side by side comparisons with batteries that have been tested and measured and used in a D cell adapter.

    I haven't made any load measurements but I am sure they can discharge at 1C to 2C without a hitch.

    I probably will only be buying LSD D cells from now on for the simple reason is that these large non-LSD cells are so expensive at approx. $8 a pop, that I don't want to have a whole set of them discharge before they get used. Charging these full capacity NiMh cells is a time consuming thing and to recondition them can tie up a charger for a day and a half.

  3. #3

    Default Re: Powerizer or Tenergy D cells?

    www.overstock.com has these C and D Accupower LSD for better price. It's really a good deal with frequent offer like free shipping or 10% off total order.

    Theone

  4. #4
    Flashaholic* NA8's Avatar
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    Default Re: Powerizer or Tenergy D cells?

    Quote Originally Posted by theone View Post
    www.overstock.com has these C and D Accupower LSD for better price. It's really a good deal with frequent offer like free shipping or 10% off total order.

    Theone
    Good deal on the C size, the D size isn't that much cheaper than Thomas Dist. and it's quite different looking.

    Note the overstock model number is -1 and the Thomas model numer is -2 on the C battery pack. Whatever that means
    Last edited by NA8; 03-05-2008 at 07:27 PM.

  5. #5
    *Flashaholic*
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    Default Re: Powerizer or Tenergy D cells?

    some old 8000-9000ma sanyos :-) or them new (accu) LSDs
    but those werent in your choices :-(

    you know why i dont have any powerizers? because they all failed after about 30-40 cycles, and i tossed them, but if i remember right silver got some good tests out of them.
    the tenergy to me is just going to do the same thing.

    them old sanyo , slightly lower powered tanks were built to the hilt, took major discharge loads and worked almost as good as the newer higher capacity stuff, even YEARS later. WHEN used in a high current situation.

    with a heavy discharge load like your talking about , you would probably prefer a lesser capacity battery that handels more juice .
    its just like when doing hotwire junk , and using 1650-1800-2000 MA AAs , they might not have the capacity, but that is BECAUSE they are built like tanks.

  6. #6
    Flashaholic* lasercrazy's Avatar
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    Default Re: Powerizer or Tenergy D cells?

    Quote Originally Posted by VidPro View Post
    some old 8000-9000ma sanyos :-) or them new (accu) LSDs
    but those werent in your choices :-(

    you know why i dont have any powerizers? because they all failed after about 30-40 cycles, and i tossed them, but if i remember right silver got some good tests out of them.
    the tenergy to me is just going to do the same thing.

    them old sanyo , slightly lower powered tanks were built to the hilt, took major discharge loads and worked almost as good as the newer higher capacity stuff, even YEARS later. WHEN used in a high current situation.

    with a heavy discharge load like your talking about , you would probably prefer a lesser capacity battery that handels more juice .
    its just like when doing hotwire junk , and using 1650-1800-2000 MA AAs , they might not have the capacity, but that is BECAUSE they are built like tanks.
    I was looking into the LSD cells and if need be I'll get them. Do you have a link to the Sanyo cells?
    Favorite lights: XeRay 75W BarnBurner | Vec Twin 55W HID mod w/ LSD D pack | Amondotech Iluminator with 12D cell pack | Modded 2MCP vector | 2C ROP Low | 6D Quad Lux 3 Mod | 2C lux5 mod | Camo 3D red mod | 3D ssc Mod | Costco 2AA: R/B, Blue, Cyan, R/O | Aleph 19 UV | 193mw PGL 3 | Ssc Garrity hl mod

  7. #7
    *Flashaholic* Mr Happy's Avatar
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    Default Re: Powerizer or Tenergy D cells?

    I've noticed that I can comfortably fit four Eneloops side by side in an unmodified Maglite. So a 4AA to D parallel adapter filled with Eneloops would be one option for getting an effectively 7000 mAh D cell.

    However when currents reach 10-15 amps at low voltage you start suffering significant resistance losses in the circuit. Under those circumstances there is a good argument for a redesign that moves to higher voltages and lower currents. If you use instead a 4AA to D series adapter the current becomes 2.5-4.0 amps for the same delivered power. Reducing current by a factor of 4 reduces resistance losses by a factor of 16.

    For this reason, I think AA to D series adapters are usually to be preferred over parallel adapters.

  8. #8
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    Default Re: Powerizer or Tenergy D cells?

    Quote Originally Posted by lasercrazy View Post
    I was looking into the LSD cells and if need be I'll get them. Do you have a link to the Sanyo cells?
    nope i do not, i got them locally from a battery pack maker guy, and i dont even remember which one. hey they worked for that long :-) and at some .8-1C discharge load.

  9. #9
    Flashaholic* lasercrazy's Avatar
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    Default Re: Powerizer or Tenergy D cells?

    I decided to just get the quality LSD cell from TD. Silverfox, feel free to lock this thread.
    Favorite lights: XeRay 75W BarnBurner | Vec Twin 55W HID mod w/ LSD D pack | Amondotech Iluminator with 12D cell pack | Modded 2MCP vector | 2C ROP Low | 6D Quad Lux 3 Mod | 2C lux5 mod | Camo 3D red mod | 3D ssc Mod | Costco 2AA: R/B, Blue, Cyan, R/O | Aleph 19 UV | 193mw PGL 3 | Ssc Garrity hl mod

  10. #10
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    Default Re: Powerizer or Tenergy D cells?

    Hello Lasercrazy,

    Done.

    Tom
    Behind every Great man there's always a woman rolling her eyes...

    Most batteries don't die - they are tortured to near death, then murdered...

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