PowerTank Lithium Pro
Item #: 18768- Extra-large capacity portable power pack featuring Celestron’s LiFePO4 battery technology
- Powers your telescope for up to 17 hours
- USB device charging supports QuickCharge 2/3 and Adaptive Fast Charge to give you the fastest device charging possible
- Features 2 USB ports for charging other devices, plus a 12V car battery adapter port
- LED light panel provides bright white or red LED illumination for up to 25 hours
- Perfect for astronomy, camping, emergency kits, anywhere you need portable power
- Meets current FAA regulations for carry-on baggage
- Battery shuts off automatically when insufficient current flow is detected to prevent you from inadvertently draining your battery
Overview
- Extra-large capacity portable power pack featuring Celestron’s LiFePO4 battery technology
- Powers your telescope for up to 17 hours
- USB device charging supports QuickCharge 2/3 and Adaptive Fast Charge to give you the fastest device charging possible
- Features 2 USB ports for charging other devices, plus a 12V car battery adapter port
- LED light panel provides bright white or red LED illumination for up to 25 hours
- Perfect for astronomy, camping, emergency kits, anywhere you need portable power
- Meets current FAA regulations for carry-on baggage
- Battery shuts off automatically when insufficient current flow is detected to prevent you from inadvertently draining your battery
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Description
The PowerTank Lithium Pro is for the true power user! This higher capacity unit is the latest version of our bestselling PowerTank Lithium. PowerTank Lithium Pro offers twice the battery capacity of the original, making it ideal for more demanding applications.
PowerTank Lithium Pro features the right ports and connections to accommodate a variety of devices. You’ll find a 12V DC 5A telescope power port (Celestron cable included), a 12V DC 10A car battery adapter port, and two 5V DC USB ports - one 2.1 A and one that supports rapid charging.
The power pack’s extremely portable form factor means it can go anywhere from a remote dark sky location for astroimaging to a weekend of camping. When it’s powering your telescope, use the included 2” straps to secure the unit to your tripod leg where it is out of the way.
One side of the unit features a strip of LED lighting in both bright white and red. This turns the unit into a convenient safety light during star parties or a work lamp to clean up your observing area when the night is done. You can even use it as a bright emergency light during a power failure and illuminate an entire room of your home.
PowerTank Lithium Pro can also travel with you on your next vacation. At 158.72 Wh, it meets current FAA regulations (160Wh) from transportation in your carry-on baggage. Please check in advance with your airline to verify they do not have stricter policies.
Advantages of Celestron’s LiFePO4 Battery
Powered by Celestron's Lithium-Iron Phosphate (LiFePO4) battery, PowerTank Lithium Pro is smaller, lighter, and safer than sealed lead acid batteries. The technology is also more environmentally-friendly since it does not use toxic heavy metals.
PowerTank Lithium Pro’s LiFePO4 chemistry holds up to 2000 charge cycles and has an un-recharged shelf life up to 10 years. That means you won’t have to remember to recharge your battery every few months like with a sealed lead acid battery. Its large, 17-hour capacity and lack of maintenance make PowerTank Lithium Pro the ideal choice for an emergency kit. Store one in your home, your garage, and even your office.
PowerTank Lithium Pro Compatibility List
Will power any computerized mount
| Compatible | |
|---|---|
| Advanced VX | CGX-L |
| Astro Fi | CPC, CPC DX |
| CG-5 | NexStar Evolution |
| CGE | NexStar GT |
| CGE Pro | NexStar SE Series |
| CGEM II | NexStar SLT |
| CGEM, CGEM DX | SkyProdigy |
| LCM series | CGX |
Technology
PowerTank Lithium Pro Compatibility List
Will power any computerized mount
| Compatible | |
|---|---|
| Advanced VX | CGX-L |
| Astro Fi | CPC, CPC DX |
| CG-5 | NexStar Evolution |
| CGE | NexStar GT |
| CGE Pro | NexStar SE Series |
| CGEM II | NexStar SLT |
| CGEM, CGEM DX | SkyProdigy |
| LCM series | CGX |
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FAQ
PowerTank Lithium – Auto Shutoff Feature
PowerTank Lithium batteries come with a safety feature that prevents them from slowly discharging if they are left unattended for long periods of time.
This feature works by monitoring the current being drawn from the battery. If the current drops below a threshold level, the battery automatically turns itself off.
- For PowerTank Lithium batteries that use a 12V telescope port, the threshold is 250mA.
- For PowerTank Lithium batteries that use a car battery adapter port, the threshold is 420mA.
Celestron computerized telescopes draw more than 250mA when the mounts are powered on, aligned, and tracking. However, if you turn on the battery and telescope, but do not align and engage the telescope’s tracking motors, your setup may not draw enough current. After a prolonged period, this could cause the PowerTank Lithium to turn itself off.
When using a PowerTank Lithium Pro battery to power your computerized telescope, we highly recommend using the 12V telescope output to provide power to your mount. The car battery port was designed to provide power for much heavier loads (up to 10 Amps). To accommodate this larger load, the threshold for the port was increased to 420mA. Some Celestron telescopes, even aligned and with the tracking motors on, may not draw 420mA of current. This could cause the battery to turn itself off. You can avoid this by using the 12V telescope port.
My Celestron PowerTank is taking longer to charge and to show a fully charged light. Why?
PowerTanks use a lead-acid battery technology. These batteries start out new at 100% capacity in amp-hours. PowerTanks come in 7 amp-hour and 17 amp-hour capacities.
As they age, the full capacity of the batteries decreases due to chemical and mechanical processes inside the battery cells. The ability to take a full charge of 100 percent of the original capacity is lost. It also takes longer to charge up due to the reduced capacity.
The PowerTank battery will also age more rapidly when repeatedly deep discharged–losing its capacity in fewer cycles than if not deep discharged. It is recommended to turn off the PowerTank when the yellow "Needs Charging" light comes on and to charge the battery after every use.
Your PowerTank will continue to hold a large part of its charge when fully charged, even though the fully charged light may not come on. And it will continue to be useful, though the runtime and amp-hours of the battery will be diminished. Replacement is a good idea when the runtime is short even after prolonged charging. When properly used, your PowerTank should last for years before it needs to be replaced. Always recycle the dead battery.
Additional, specific charging recommendations to prolong the life of an idle or stored PowerTank are provided in the instructions that come with your PowerTank.
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