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Thread: Celestron power options

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    Default Celestron power options



    Hi all. As a night sky newbie, Iím just getting all my kit together and am currently sourcing a long term power option for my NexStar 8. Iím in the UAE and unfortunately, with the shipping restrictions on Li-ion batteries, itís near impossible to order in the Celestron power bank or the Talentcell options that most people recommend on this forum.
    Locally, Iíve found this...
    https://uae.souq.com/ae-en/13600-mah...ter-9049589/i/

    I wonder if anyone with a tech eye can advise on whether this would do the job?

    Thanks for your help!

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    Default Re: Celestron power options

    Welcome to the forum.

    That will do the job for short sessions. The SE mount takes about 1 amp. That battery has a capacity of 13.6 amp-hours, so it will run the mount for up to 13 hours before it is dead. But you never want to run a battery down that low. So, realistically, you are looking at six hours of operation on a charge. If you add other devices, the time will be correspondingly less.

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    Default Re: Celestron power options

    That 13.6 AH rating is probably for the 5V output. So for 12V it's about 5.6 AH. So it should run at least 5 hours running a mount. All LIO batteries have a protection circuit to prevent them from being completely run down, so don't worry about that.


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    Default Re: Celestron power options

    I once got a lithium-ion battery which would function as a battery jump-starter

    It did not work well at all. It turned out it was designed to have the 12 volt power available for only a very limited time period. Which meant that after about 3 minutes (IIRC) the thing would shut off the 12 volt power. Not fun to get everything aligned and tracking - and then 3 minutes later having to build the pointing model again with the certain knowledge that I'd have the exact same problem

    So with Lithium-ion batteries with 12 volt output intended for starting a vehicle I recommend checking first with the manufacturer or someone familiar with the electronics to make sure the 12 volt power won't shut off in a few minutes. Maybe this one doesn't do that, but maybe it does?
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    Default Re: Celestron power options

    In the description it says it will run laptops to 19v and will run travel refrigerators so it should not shut off automatically.
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    Default Re: Celestron power options

    Why not get a 'standard' 17ah 12v 'jump pack' it will be less expensive and last longer?
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    Default Re: Celestron power options

    I have something very similar to this and I find it excellent. Initially the output was too high for the mount but my electronic genius brother-in-law built a magic box to control the voltage to 12v. The extra voltage didn't damage my mount - it just didn't work, so there seems to have been some protection built into the mount. This would be my only concern with the device you're looking at which shows output of 12v, 16v and 19v from the output socket. I'm not sure if there is a switch to control the output voltage.

    Hey I'm an electronics novice but I'm just relating my experience.

    Cheers
    Bob


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    Default Re: Celestron power options

    I think your best bet for reliable long term power is to use a standard car battery. They exist in every country and it will run your scope + accessories for many hours. Always keep it on a trickle charger when not in use to keep it in top notch shape. I think this is your best bang for the dirham.

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    Default Re: Celestron power options

    Brilliant. Thanks to you all for those tips and things to double-check. Much appreciated.

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    Default Re: Celestron power options

    Welcome to the forum!

    Nice to see some in UAE coming here.

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