Celestron PowerTank Lithium Pro 12V DC rechargeable battery


Availability: In stock

Standard shipping: $12.95

Extra-large capacity portable power pack featuring Celestron’s LiFePO4 battery technology
Powers your telescope for up to 17 hours
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

Our Product #: PTL17V
Celestron Product #: 18768

Product Description

The Celestron Extra Large Power Tank Lithium Pro is a high-power, high-performance, portable battery pack that will power, charge, and illuminate all your astronomical observing and imaging sessions.  This Pro version has twice the battery capacity of the orginal.  
The Celestron PTL17V Power Tank Lithium uses new Lithium Iron Phosphate (LiFePo4) chemistry. This yields a smaller and lighter portable power pack than conventional sealed lead-acid batteries. The Celestron Litium holds its charge longer and requires less routine maintenance than a traditional sealed lead-acid design.
The high capacity Celestron Lithium Pro battery will run a telescope for up to 17 hours via its 12V DC outlet. It has two 2 5V USB ports (1.0 and 2.1 Amps) for charging your personal electronic devices (iPad, iPhone, etc).
There is a large LED panel in the side of the battery with your choice of red or white light, each with two brightness levels, for all your illumination needs.
A large 2" strap allows you to secure the battery to the leg of your telescope tripod to make transport easier. A removable secondary strap allows you to hang the battery in a vertical or horizontal position from just about anywhere on your scope.
PowerTank Lithium Pro can also travel with you on your next vacation. At 158.74 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.
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.

Tech Details

Weight 3.7 lbs.
Warranty 1 year


Review by:
My 17 hour Lithium Pro battery is lighter by about half compared to my old lead acid 17 hour Power Tank. It's features are not obvious, so let me explain them. It has a standard 12 V cigarette port and a separate charging port. The charging port is dual purpose and can also be used to operate Celestron mounts using a special cable that is supplied with the battery and attaches to the charging port on one end and at the other end, screws into the power input port on my CGEM II mount. The battery has a button to press to turn it on and off, but if it is being charged, you do not need to turn it on to do so. It has a fast and slow USB charging port.
It comes with a Velcro strap allowing you to wrap it onto a tripod leg.
I do not know if the Celestron Power cable will work with other mounts, which do not have a threaded port, but I suspect friction alone would be adequate for non-Celestron mounts.
I have noted one quirk about this unit in that its battery status display is a little misleading: I plugged it in to recharge it last night and it was fully recharged with all four lights illuminated. This morning, It was displaying only three lights when I turned it on. I plugged it in again and the third light was flashing and the fourth light was dark. Five minutes later, the display revealed four steady lights meaning the charging was complete. So this means to me that the battery display tends to underestimate its power reserve, at least when it is near its full capacity.
I have not had it out under the stars all night, so I cannot comment on its actual capacity. It can certainly supply at least four hours of power to the mount and to one dew heater strap for a five inch refractor lens cell. (Posted on 8/23/2022)
Review by:
I also have one of the older/smaller LiFePO power tanks. It served me well for a while, but I knew I needed a bit more battery life for a week trip to Big Bend, TX with my Celestron AVX. The Powertank Pro has not disappointed. Much lighter than a car battery, I can use it for a while in remote locations. Plus, during the day, my family can charge their iOS devices (well, at least two at a time). I think if it detects a device has been unplugged, it will stop powering both USB ports. I need to verify that, but just make sure to push the power button if other devices are still attached. (Posted on 10/23/2019)
Review by:
I've powered a mount and camera at once with this. It straps right to the mount leg out of the way, which is great to prevent accidents. At under 5 pounds I have extra room in a case for it. In a nutshell, it's a great little power supply and worth the price. (Posted on 10/4/2019)
Review by:
I have one of the older/smaller LiFePO power tanks - it powers my Celestron CPC 9.25 Edge HD very well - will run the scope for several nights, but I bought the new Pro version because it has the 12v lighter port - I use the small power outlet to power the scope and when I need my dew heaters, the 12v outlet powers those. When I'm not using the heaters, this battery runs the Edge about three times as long as the smaller version. When I'm using the heater (depending on the power setting) I can still get four or five nights out of the battery before it needs a re-charge.

This is amazing technology - the guys at Celestron are really putting out some great technology products - I highly recommend this power-pack. (Posted on 7/22/2019)
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