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  1. #1
    Visualinfinity's Avatar
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    Default power tank question



    what are some of the standard power tank units that people are using these days?

    I don't really care to buy either one offered by celestron or orion since I don't
    want to pay for all the bells and whistles they include.

    More important.....after all the research I've done it seems more important to buy
    a unit where the battery can easily be changed/upgraded.

    I've kind of come to the conclusion that it almost doesn't matter what brand or model I get (for the most part
    they're all the same)
    That it's more important to invest in something like an OptiMate to properly charge and maintain the battery
    on a unit where the battery is easily removable due to the characteristics of lead acid batteries


    Any thoughts my friends?

  2. #2
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    Default

    Spend a few extra $$ on a good Leisure Battery and , as you say , invest in a quality charger unit. They are higher rated than the usual astronomy ones, and do not die after a short while.

    Clear Skies

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  3. #3
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    Default

    It's important to know what you plan to power with the battery. What mount, a list of equipment, and how long you need to supply power to that equipment. I have a 9Ah, 2 12Ah, a 19Ah, a 28Ah and a 32Ah jump packs. I use them according to need. The reason I have so many is because I do out reach programs twice a month and set up 1 to 5 scopes at a time. As you know it is very important to maintain them correctly. The use of a multi-stage smart charger is a good investment. Most of the good quality jump packs will have smart charging technology , so you can leave them plugged in all the time, but multi-stage charging is just one better. I wouldn't deal with anything smaller than a 9Ah unit.

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  4. #4
    Visualinfinity's Avatar
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    Default

    Thanks Stan

    I def know what my power requirements are so I won't mess up there

    But I'm not sure I agree that most of these units have smart charging built in....From what I've researched it seems that very few do. Anything specific you can link to?


    Thanks for taking the time to respond!

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    Default

    the research ive done also suggests that not many of these units have smart chargining. gotta get something like a batteryMinder or something. the die hard units from sears say they have some sort of smart charging.

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    Default

    The Duracell, Vector, Black and Decker, Schumacher, JNC, Die Hard, Just to name a few... I can go on if you would like.

    Stan
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  7. #7
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    Default

    huh...interesting... I didn't realize all those included that... I'll have to look closer at the specs.. This is why you research and ask questions

    Thanks!

  8. #8
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    Default

    But....is one brand easier to get the battery out than another?

    Thats another reason I'm avoiding the celestron .. I read it's a pain to get the battery out

  9. #9
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    Default

    Die Hards are a pain, but most of them just require the removal of a hole lot of screws holding the 2 halves of the case together. An electric screwdriver or drill makes quick work of it.

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    Default

    I use a Celestron Power Tank 12 Volt Power Supply #18777. I have used it over 8 nights and still have yet to charge it. One of the guys in my astronomy club has 2 of the same model. He said his will run well but once he uses his dew zapper he get only a few hours.

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