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Celestron 18778 AC Adapter (Black)

109 customer reviews
| 12 answered questions

List Price: $27.95
Price: $21.49 & FREE Shipping on orders over $35. Details
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  • Power your Celestron computerized telescope from any AC wall outlet
  • 2.5 amp AC Adapter
  • Suitable for indoor or outdoor outlets
  • Power your Celestron computerized telescope from any AC wall outlet ^2.5 amp AC Adapter ^Suitable for indoor or outdoor outlets
12 new from $20.00 1 used from $19.88
$21.49 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Celestron 18778 AC Adapter (Black) + Celestron Accessory Kit + Celestron Power Tank
Price for all three: $240.93

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Technical Details


Product Description

Enjoy your telescope without batteries with this AC adapter! When using your telescope at home or near any wall outlet, you can enjoy hours of uninterrupted observing. Running your telescope off of AC power is hassle-free and much more reliable than other methods, especially in cool temperatures, when batteries can lose charge quickly. This 2.5 amp AC Adapter is compatible with the following Celestron computerized telescopes: LCM Series, NexStar SLT Series, NexStar SE Series, SkyProdigy Series, Advanced Series, Advanced VX Series, CPC Series, CPC Deluxe HD Series, CPC Deluxe HD Series -This adapter is sufficient for most visual observing with a balanced telescope. However, for astroimaging using additional equipment, the 5 amp adapter (product #18780) is recommended.

Product Details

  • Product Dimensions: 144 x 1 x 1 inches ; 1 pounds
  • Shipping Weight: 11 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0012YXF1O
  • Item model number: 18778
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (109 customer reviews)
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at Amazon.com: June 17, 2003

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

19 of 19 people found the following review helpful By John Nichols on June 26, 2009
The bottom line on Celestron's SE series is that battery power is not enough. AA batteries drain quickly, and if you are using a dew zapper (also a necessity on SCTs) then that alone will drain your battery is just four hours on Celestron's smaller power tank. Plug your scope in, and the drain is even faster. If you're planning to be out for any length of time you should really consider this accessory. I use it with my 8" SE nearly every time I am out and can plug into a power source. It's never failed me yet.
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13 of 13 people found the following review helpful By Terry J. Weller on February 6, 2010
Verified Purchase
I ordered the adapter so I wouldn't go through so many batteries when using our telescope at home. It was a great purchase and well worth it. As with many battery operated items, as the batteries get used, the device they power starts to slow down. This is the case with our celestron telescope. Not only does it slow down, when the batteries get to a certain point in their use, the star tracking functions stop working correctly. So, even though the 'scope has power to move, it's slow and and won't follow the star tracks. Not only that, but it won't even correctly star align on start up. But, with the power adapter, that's no longer a problem. The built in functions of the 'scope work perfectly and the 'scope moves with authority when changing from one object to another and correctly stays fixed on the object as it moves through the sky.
Any drawback would be having to connect it to an electrical cord and make sure you don't trip over it, but that's a minor problem. I'd definiately recommend this to anyone with a 'scope.
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10 of 10 people found the following review helpful By Alice L. Wardrep on January 23, 2010
Verified Purchase
I ordered a Celestron NexStar 4 Telescope for my husband as a Christmas present. After researching Amazon's site for other related products I found the AC Adapter. This is a must have for any of the Celestron telescopes along with the battery pack. I appreciated that the information was so easy to find and the telescope along with the AC Adapter was delivered on Christmas Eve only 5 days after my order. Thank you Amazon!
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6 of 6 people found the following review helpful By Dan C. on August 2, 2010
Verified Purchase
Good thing to have for your telescope when star gazing from home. Two minor cons: the connection between the adapter and the telescope is a little loose (almost like the male and female connectors are not quite matching); also, Celestron should have put the AC connector receptacle in the fixed part of the base, the part that does not rotate - now, I always have to be careful with the power cable so that it does not tangle or fall off when the telescope rotates.
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5 of 5 people found the following review helpful By Tracy on September 28, 2011
like all power cords this one gets some issues where the cord meets the plug in on the product end.
If your not set up for cord wrap issues and you are an avid scope user learn to tie a half hitch so
the pull stress isnt on the end of the cord.
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4 of 4 people found the following review helpful By Tennis Brandon on December 22, 2011
Verified Purchase
I'm using this on my Celestron SkyProdigy 130 and it's doing great. It has a pretty long cord so you don't have to be right next to the power outlet.
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2 of 2 people found the following review helpful By zydeholic on July 23, 2014
This is not the right adapter for the Advanced VX mount, though it is listed as a "buy also" with the mount.

In fact, it damaged the power port on my mount and now I have to return it. From what I'm reading online, the Advanced VX takes a 5amp adapter.
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1 of 1 people found the following review helpful By R. Stephen Franks on July 19, 2014
Verified Purchase
Though Celestron's own part description says this unit (#18778) is recommended for the AVX mount. IT IS NOT!

The mount's 5amp amperage draw is higher than this unit is able to produce. My neighbor blew up his AVX handset and mount at the speed of light after he fired up using this model AC/DC converter. He had to send his mount back to Celestron. Turnaround times cost him a month's wait exchanging the mount. If you own, or are purchasing, an AVX mount I would strongly suggest the heavy duty #18780 Celestron converter instead though it costs twice as much. Your power source amperage MUST always be greater than the device's amperage demand. It isn't worth buying a lesser converter on the cheap at the expense of a $900 mount.

For reasons known only to God, mine works just fine with my AVX. Perhaps it is just over the cusp for amps, or my mount is not as demanding. Either way, my #18778 convertor is better left in the drawer. If I decide on a proper converter, I will bite the bullet and purchase the #18780 as well.

When in doubt check your operator manuals, or call Celestron's tech support. Item descriptions cannot always be trusted!
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Celestron 18778 AC Adapter (Black)
This item: Celestron 18778 AC Adapter (Black)
Price: $21.49
Ships from and sold by Amazon.com