Celestron PowerTank Lithium LT 18763

Celestron PowerTank Lithium LT Portable Power Supply (#18763)

Clean, consistent, telescope-safe power in Celestron’s most compact lithium pack yet.

The PowerTank Lithium LT is the ideal solution for backyard astronomers, remote imagers, and stargazers on the move. Engineered specifically for computerized telescopes, this rugged little powerhouse delivers up to 8 hours of regulated 12V power—without the weight, bulk, or voltage instability of traditional sealed lead-acid or off-brand lithium batteries.

Whether you're observing in your backyard or heading off the grid to a dark-sky site, PowerTank Lithium LT makes sure your telescope runs smoothly all night long.

Designed by Astronomers, for Astronomers

Most lithium power packs on the market weren’t designed with telescope electronics in mind. But Celestron’s engineers built this unit from the ground up with astronomy in focus—quite literally.

Telescope drive systems are voltage-sensitive, and even small drops below 12V can cause tracking errors, sluggish slewing, or outright glitches. Unlike generic lithium batteries that start strong and fade fast, the PowerTank Lithium LT includes a built-in 12V voltage regulator, maintaining a steady 11.8V or higher throughout the discharge cycle. That means your telescope gets clean, stable power right up until the battery shuts off—no mid-session surprises, no slewing stalls, and no corrupted GoTo databases.

Lithium NMC Chemistry: Safer, Smarter, Longer Lasting

Inside the PowerTank Lithium LT is a next-generation Lithium Nickel Manganese Cobalt Oxide (NMC) battery—the same chemistry used in high-performance electric vehicles. Compared to cheaper lithium cobalt batteries or lead-acid units, NMC offers:

• 3x the number of charge cycles

• Better performance in extreme temperatures (operates from -40°F to 140°F)

• Superior overcharge/discharge protection

• Higher resistance to thermal runaway

It’s also smaller, lighter, and more environmentally friendly than traditional power sources—perfect for those who want high capacity without the heavy footprint.

Power Where You Need It

With a footprint no bigger than a paperback and weighing just 1.4 lbs (0.63 kg), the PowerTank Lithium LT travels easily and mounts securely to your tripod using the included 2" Velcro strap. A single 12V DC telescope port and a fast-charging 5V USB port give you flexible power for both your scope and your favorite gadgets.

Use the USB port to charge smartphones, tablets, or any 5V-compatible accessories—no extra adapter needed. Meanwhile, the 6.5-foot telescope power cord with a barrel connector makes cable management clean and easy during setup.

FAA-Compliant and Ready to Fly

At 73.3 watt-hours, the PowerTank Lithium LT falls well within current FAA carry-on battery regulations (under 100 Wh), so it’s travel-approved for your next eclipse chase or astro-vacation. Just stow it in your carry-on—never checked luggage—and confirm any airline-specific rules ahead of time.

Observing Tip:

Secure the PowerTank Lithium LT to a tripod leg using the supplied strap to keep it elevated, stable, and out of the way of dew or accidental bumps. Its small size and long cord make it easy to hide in plain sight—keeping your observing area safe, clutter-free, and power-ready.

Final Thoughts

If you’ve been relying on oversized power bricks or flaky third-party battery packs, it’s time to upgrade. The Celestron PowerTank Lithium LT delivers exactly what your telescope needs: regulated voltage, all-night reliability, and total portability—without the guesswork or the bulk.

Whether you're running an 8” GoTo SCT in your backyard or powering a NexStar Evolution from a campsite, this compact, rock-solid power supply keeps your system running strong.