Celestron - PowerTank 17 12V Power Supply for Celestron Powered Telescopes - Black

This Celestron PowerTank 17 18777 power supply features two 12V outputs, plus 3V, 6V and 9V outputs, to help keep your Celestron powered telescope and accessories charged and ready for stargazing. A built-in circuit breaker helps ensure safe use.
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What's Included

  • Celestron PowerTank 17 12V Power Supply for Celestron Powered Telescopes
  • 110/220V switchable AC adapter, car adapter
  • Owner's manual

Ratings & Reviews

Overall Customer Rating:
67% of customers would recommend this product to a friend (2 out of 3)


From our expanded online assortment; not available in all Best Buy stores

Compatible with most Celestron powered telescopes

To help keep your telescope charged and ready for astronomic observation.

Two 12V power outputs

Along with 3V, 6V and 9V power outputs for quick and easy charging of your telescope and other accessories.

Built-in circuit breaker

Helps prevent short-circuits to ensure safe use.

Built-in flashlight with red filter cap

Plus a built-in energy-efficient LED spotlight for convenient illumination on the go.

Booster terminal

Supports car battery jump-starts, delivering peace of mind.

Built-in siren

Delivers a sonic alert to help others pinpoint your location during an emergency.

AM/FM radio

Makes it easy to access radio stations while you travel.

Includes 110/220V switchable AC adapter and car adapter

For use in powering a variety of devices.

Overall customer rating

would recommend to a friend


Looks like there aren't enough positive mentions yet.


  • Rating: 4 out of 5 stars

    Exactly what is needed!

    • My Best Buy® MemberMember

    Unit is solid, excellent construction. It's heavy (about 20 lbs), but it's a lead battery, so that's expected. Has two lights - a bright white spot light and a smaller, detachable, red light. The detachable light has a cord connected to the unit that winds up and stores conveniently. The storage for the red light is a bit fiddly - my only "complaint". Unit comes charged, but needs a full charge before use. First charge takes about 24 hours. Comes with two charging cables - an AC adapter (along with an assortment of international adapters), and a DC adapter. **CAUTION: The "cigarette lighter" (DC adapter) cord is NOT the correct cord for powering a NexStar SE!! Yes, it can be used, but it will not make a solid connection. There is a separate power cord to power the telescope that must be ordered from Celestron (or another retailer). Radio is a nice feature for home emergency, but not needed at all. The unit has the ability to attach jumper cables (sold separately), but the unit is NOT designed as a "jump-starter" for your vehicle. To use this feature, attach the jumper cables to the terminals on the back, and then "charge" the vehicle's battery, disconnecting the PowerTank before cranking the engine. Not ideal for this feature, but can be used in an emergency, if needed. Overall... very happy with the unit and expect a long life. Thank you, Celestron, for the 2-year warranty, in case anything goes wrong! Would have given 5 stars, except for the "fidly" detachable light storage, the fact it did not come with a manual (had to download from Celestron), and you still have to order a separate power cord for the telescope.

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    total waste of money


    I have owned two of these and both have failed miserably. getting customer support for a replacement was very difficult. I had to wait more that a month for a replacement and it falied within 2 months. This was a total waste of my time and money. There are products available at half the price that are far more reliable.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    it works fine

    • My Best Buy® Elite Plus MemberElite Plus Member

    I've been using this Celestron power tank 17 for over three months now and it's been working without issues. The charge lasts a long time. Charging can take up to 24h. I use it to power my telescope mount and the tablet and I connect to the mount.

    I would recommend this to a friend

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