Celestron18763 PowerTank Lithium LT Telescope Battery Power Pack – Rechargeable Portable 12V Power Supply for Computerised Telescopes with 8 Hour Capacity / 73.3 Wh and 1 USB Port, Black

A must for owners of computerized telescopes.

This is a must have for your evening of viewing the sky. The battery pack is easy to carry and attach to your scope. This lasts many hours. The level indicators are easy to see and the charging time is quick. The value of this is first the price and no more buying AAA batteries that do not last. When you are in the night you want power to light the scope.

I regularly use lithium charging packs, so was expecting this to be similar. It’s not. It’s much beefier/bigger. It is powering a Celestron motorized telescope and since December 25, 2024 until January 17, it’s still at 3 of 4 bars charged on its initial charge. We’ve used the telescope regularly (the new hasn’t worn off yet), and have left it on tracking the moon or planets for hours. It’s well worth the money compared to installing and replacing batteries on the tele. Highly recommend.

AMAZING! you have to have this on your scope.

This power tank probably works great for what it's designed to do. The problem is that it isn't designed to do what I need and didn't have enough information in the description for me to know that until I received it and read the manual. The manual states that it will provide up to 2 amps service and will shut off if a sustained draw over 2 amps is used. My astrophotography equipment is going to be drawing nearly 10 amps at times, so this power tank will not work. I had to return it. Too bad the description online didn't tell me this before I purchased it.

Works as should. Great for my telescope. And as a battery for recharge on trips for kids.

I like the fact that the power is regulated. It powers my GEM28 with a Skywatcher150 with no issues. It lives up to the design claims. I'd recommend it for any similar mount configuration.

This proved to be an excellent power source for my Celestron NexStar 8SE. My bulky old power tank (the one that looked like a small suitcase) was no longer holding a charge, so I decided to just go with the 8 AA batteries. Had problems getting the scope aligned, tracking, slewing etc. Apparently it didn't take long for the batteries to lose enough power to start causing problems. Decided to give this thing a try. What a difference! My scope is now operating perfectly. I haven't had this thing long enough to tell you how long it lasts, but I have used it for several nights now without recharging. (Admittedly, I don't stay out more than an hour or so in the winter.) A nice feature: It has indicator lights to let you know the level of charge. In order to avoid cord wrap issues, I velcroed it to the top of the battery compartment. This works great MOST of the time. But in this position, it is thick enough that it can interfere with the scope slewing to an object high in the sky. (Easily remedied by temporarily removing it to the tray below. Just be careful of cord wrap.) Anyway... I am very happy with this product so far, and greatly relieved that my expensive scope is now operating as it should!