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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Celestron AC Adapter - 2 Amp

Celestron AC Adapter - 2 Amp

by Celestron
SKU CEL-18778
$36.95 - $36.95
$36.95
$36.95 - $36.95
$36.95
Price Match Policy!
  • Provides continuous 12V DC power to your telescope
  • 2.5 amp (2500 milliamp) current output for most Celestron computerized mounts
  • Eliminates reliance on batteries for at-home observing sessions
  • Standard 2.1mm x 5.5mm center-positive tip
  • Compatible with NexStar SE, SLT, Advanced VX, CPC, and more
3 in stock
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Celestron AC Adapter - 2.5 Amp

    This Celestron AC Adapter delivers a reliable 12V DC output with 2.5 amps (2500 milliamps) of current, powering your computerized telescope for hours of uninterrupted observation from any standard wall outlet. The barrel connector features a standard 2.1mm inside diameter and 5.5mm outside diameter with a center-positive tip, ensuring a secure connection to a wide range of Celestron mounts including the NexStar SE, Advanced VX, and CPC series.

    Stable 12V, 2.5 Amp Power for Computerized Mounts

    Running a computerized telescope on battery power, especially in cold weather, can lead to voltage drops and inconsistent performance. This 2.5 amp AC adapter solves that problem by providing a steady 12V DC current, ensuring your mount's motors and electronics operate smoothly without the risk of battery failure mid-session. It's the most reliable power source for backyard or home-based observing.

    2.1mm x 5.5mm Jack for Celestron GoTo Scopes

    Engineered for a precise fit, this adapter's plug features a 2.1mm inside diameter and a 5.5mm outside diameter, the standard for most Celestron computerized telescopes. The center-positive tip polarity matches Celestron's requirements, protecting your telescope's sensitive electronics. This adapter is directly compatible with LCM, NexStar SLT, NexStar SE, SkyProdigy, Advanced VX, and CPC mounts, among others.

    2.5 Amp vs. 5 Amp: Choosing the Right AC Adapter

    While this 2.5 amp adapter is sufficient for most visual observing, certain use cases require more power. Celestron recommends a 5 amp adapter for more demanding applications.

    • 2.5 Amp Adapter (This Model): Ideal for visual use with nearly all Celestron computerized mounts, including the CPC series with a well-balanced load. It provides ample power for slewing, tracking, and using the hand controller.
    • 5 Amp Adapter: Recommended for astroimaging with the CPC Deluxe HD series, especially when powering additional accessories like cameras, dew heaters, or electronic focusers through the mount. The higher amperage prevents potential power dips when multiple devices draw current simultaneously.

  • Will this 2.5 Amp AC Adapter work with my NexStar 8SE?

    Yes, this adapter is fully compatible with all telescopes in the Celestron NexStar SE series, providing reliable 12V DC power for both tracking and GoTo slewing.

    Is this adapter sufficient for my CPC Deluxe 1100 HD for visual observing?

    For most visual observing with a balanced CPC Deluxe HD telescope, this 2.5 amp adapter provides sufficient power. However, if you plan to add heavy imaging equipment or multiple powered accessories, Celestron recommends the 5 amp version to ensure stable operation under heavy load.

    Why is my Advanced VX mount draining batteries so fast in the winter?

    Cold temperatures significantly reduce the efficiency and charge capacity of batteries. This AC adapter is the ideal solution for cold-weather observing, as it delivers a consistent 12V DC, 2.5 amp supply regardless of the ambient temperature, eliminating battery-related performance issues.

    What are the physical dimensions of the Celestron AC Adapter's plug?

    The plug has an inside diameter of 2.1mm and an outside diameter of 5.5mm. The jack length is between 10mm and 15mm. It uses a center-positive tip polarity, which is standard for Celestron mounts.

    Can I use this Celestron adapter with a non-Celestron telescope?

    While the 12V DC output and 2.1mm x 5.5mm center-positive plug are common, you must verify the exact power requirements (voltage, amperage, and polarity) of your specific non-Celestron mount. Using an incompatible power supply can permanently damage your telescope's electronics.

    Is this the same adapter that comes with the NexStar Evolution telescope?

    No, but it is compatible. The NexStar Evolution series includes an AC adapter that also functions as a charger for its internal battery. This 2.5 amp adapter will power an Evolution mount directly from a wall outlet, but it will not charge the internal battery.

  • AC Adapter Output 12V DC
    Current Output 2.5 amps (2500 milliamps)
    Tip Polarity Inside tip positive
    Plug Inside Diameter 2.1mm (.08")
    Plug Outside Diameter 5.5mm (.21")
    Jack Length 10mm - 15mm (.39" - .59")
    Compatible Telescopes LCM, NexStar SLT, NexStar SE, SkyProdigy, Advanced, Advanced VX, CPC GPS XLT, CPC Deluxe HD
    • Celestron AC Adapter - 2 Amp

      AC Adapter - 2.5 Amp

      × 1

  • Celestron 2-Year Warranty