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Celestron 93585 PowerTank Glow 5000 Portable USB Rechargeable Power Bank and Red Astronomy Flashlight - 5000 mAh Capacity, Includes Silicone Mount Straps, Black

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Style: PowerTank Glow 5000 Red Flashlight/Charger

Special Feature	Portable
Color	Red
Power Source	Battery Powered,Corded Electric
Light Source Type	LED
Material	Charger

About this item

THE PERFECT 2-IN-1 ASTRONOMY ACCESSORY: A red flashlight with a built-in USB power bank for recharging mobile devices in the field. A great gift for astronomy enthusiasts.
PORTABLE POWER BANK FOR MOBILE DEVICES: Rechargeable 5000mAh 5V DC lithium-ion battery delivers a full recharge to most smartphones (iPhone, Android, and more). USB Type A output port charges phones, tablets, and other 5V DC electronics.
LED ASTRONOMY FLASHLIGHT: Preserve your night vision with this red flashlight. Features three brightness levels.
SAFE LITHIUM BATTERY: Developed by Celestron in California, this lithium battery won’t overheat. It is safe and reliable for 500+ charge cycles.
ATTACHES TO YOUR TELESCOPE: Silicone mount straps included to attach Power Tank Glow 5000 to your telescope tripod leg or other convenient locations. Also includes a wrist strap.

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About us

Celestron has been an optics industry leader for decades, ever since Tom Johnson unveiled the game-changing C8. We strive to continue his legacy by continually developing exciting products with revolutionary technologies. Here, you can learn all about our patented, one-of-a-kind innovations.

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Technical Details

Special Feature	‎Portable
Color	‎Red
Power Source	‎Battery Powered,Corded Electric
Light Source Type	‎LED
Material	‎Charger
Included Components	‎Flashlight, Two silicone straps, USB charging cable, Wrist strap
Voltage	‎5 Volts
Battery Cell Composition	‎Lithium
Item Weight	‎6.4 ounces
Number of Batteries	‎1 Lithium Metal batteries required. (included)
Water Resistance Level	‎Water Resistant
Warranty Type	‎limited warranty
Brand	‎Celestron
Battery Description	‎Lithium-Ion
Style	‎PowerTank Glow 5000 Red Flashlight/Charger
Finish Type	‎Red
Recommended Uses For Product	‎Cellular Phone
Global Trade Identification Number	‎00050234935852
Manufacturer	‎Celestron
Size	‎PowerTank Glow 5000 Red Flashlight/Charger
UPC	‎050234935852
Part Number	‎93585-CGL
Product Dimensions	‎5.51 x 1.3 x 1.3 inches
Item model number	‎93585-CGL
Batteries	‎1 Lithium Metal batteries required. (included)
Finish	‎Red
Shape	‎Cylindrical
Item Package Quantity	‎1
Number Of Pieces	‎1
Special Features	‎Portable
Batteries Included?	‎Yes
Batteries Required?	‎Yes
Description Pile	‎Lithium-Ion
Battery Capacity	‎5000 Milliamp Hours
Warranty Description	‎2-year warranty.

Additional Information

ASIN	B07VG9P5JT
Customer Reviews	1,084 ratings 4.1 out of 5 stars
Best Sellers Rank	#68,114 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories) #1,678 in Cell Phone Portable Power Banks
Date First Available	July 22, 2019

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Product Description

PowerTank Glow 5000 is an essential for any amateur astronomer. This 2-in-1 device features a rechargeable, handheld red LED flashlight with three brightness levels and a 5000 mAh 5V DC power bank to charge mobile devices. The PowerTank Glow 5000 attaches to one of your telescope’s tripod legs or other convenient locations using one of the two included silicone straps so it is safe and out of the way. A wrist strap is also included.
Red Flashlight for Astronomy
A red flashlight is one of the most beneficial accessories you can own as an amateur astronomer. The PowerTank Glow is the perfect astronomy flashlight as it will not compromise your vision at night with its red LED flashlight. This flashlight has three brightness levels that allow you to adjust the brightness depending on how dark your observing site is. When your flashlight needs power, there’s no need to replace batteries like with traditional flashlights. Just recharge the PowerTank Glow via USB.
A High-Quality Lithium Battery Technology You Can Trust
The power bank has an output port for charging 5V DC devices, including smartphones and tablets. The input port is used to recharge the internal lithium-ion battery. The battery has a minimum of 500x charge cycles, so it can serve your astronomy needs for years to come. The input/output ports have integrated covers to protect them when not in use. PowerTank Glow 5000 also has overcharge protection.

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5 volts

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1,084 global ratings

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Customers say

Customers find the flashlight effective for astronomy use, particularly for viewing star charts, and appreciate its functionality, noting it works well for extended periods. The brightness control receives mixed feedback, with some praising the adjustable red light intensity while others find it too weak. Moreover, durability is a concern as the thumb wheel and port covers break off, and battery life is inconsistent, with some units lasting only an hour. While some customers consider it good value for the price, others find it overpriced.

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Functionality Night vision Astronomy use Brightness Quality Value for money Battery life Durability

98 customers mention "Functionality"71 positive27 negative

Customers find that the flashlight works well and lasts a surprisingly long time, with one customer noting it functions effectively when changing telescope lenses.

"...Works great and the adjustable wheel is nice. I had thought about getting the more expensive Rigel Skylite Flashlight but this works fine...." Read more

"works great! very easy on the eyes in the dark.....tremendous help verifying camera settings and reviewing my 'the night sky' chart..." Read more

"It does not work.. super small. It's nothing like you'd think it should be." Read more

"...It works well because of the dimming feature...." Read more

53 customers mention "Night vision"40 positive13 negative

Customers appreciate the flashlight's night vision capabilities, noting that it doesn't ruin night vision and is easy on the eyes in the dark, with one customer mentioning it helps find their way around in the dark.

"Exactly what I was looking for. Works great in the dark. Never lose your night vision." Read more

"Nice night vision flashlight, although a bit cheaply made...." Read more

"This light is perfect for seeing in the dark when you don't to "wake up" with a white light." Read more

"...It will ruin your night vision and annoy anyone who is observing nearby...." Read more

38 customers mention "Astronomy use"37 positive1 negative

Customers find the flashlight useful for astronomy activities, with one mentioning it works well for nighttime stargazing and another noting it's perfect for reading star charts.

"This is a very useful, powerful nighttime flashlight...." Read more

"Very useful- could be even better if it had a clip..." Read more

"...Being so, it is a very handy light to have...." Read more

"...The light can be very bright on the highest setting and perfect for reading star charts on the lowest setting. Nice product." Read more

155 customers mention "Brightness"96 positive59 negative

Customers have mixed opinions about the flashlight's brightness, with some appreciating the adjustable red light intensity and the lowest light setting, while others find it too weak and could use more adjustment options.

"...I appreciate the adjustable brightness. Great value for the money. It is much better than devices other people use at such events." Read more

"It could be a little brighter, but I do have bad eyes in low light levels, so it might just be me too...." Read more

"Just got. Adjustable brightness runs from dark to bright enough. I hope it is durable. I trust the red light will protect my night vision...." Read more

"...The adjustable intensity allows me to decrease the brightness as my eyes adjust to the darkness...." Read more

106 customers mention "Quality"56 positive50 negative

Customers have mixed opinions about the flashlight's quality, with some finding it perfect while others describe it as terrible.

"Upon initial use, it's a great product. Problem is, they don't hold up. They don't survive being dropped on the ground...." Read more

"Piece of junk. It's literally just some cheap red LED's on a cheap circuit board. The glass lens fell out and broke almost a day after using it...." Read more

"Very nice!! long lanyard, quiet rolling switch, easy to hold design." Read more

"Very poor quality. Dimmer barely works, if at all, does not turn on most of the time. Do not waste your time on this one." Read more

66 customers mention "Value for money"38 positive28 negative

Customers have mixed opinions about the flashlight's value for money, with some finding it good for its price while others say it's not worth the cost.

"This is a pretty good flashlight for the price...." Read more

"...The brightness is weak, with the red lens cover and cheap, unergonomic plastic shell ill-fitting thus letting some white light shine through,..." Read more

"Inexpensive, not the sturdiest and the light is well suited for dark adapted eyes when observing." Read more

"...: the black strap ripped and im down to my orange one, these are very cheap and I wish there was a magnetic surface where it could just stick to the..." Read more

57 customers mention "Battery life"34 positive23 negative

Customers have mixed experiences with the flashlight's battery life, with some finding it awesome while others report unintuitive replacement and difficult changes.

"Good flashlight and power bank..." Read more

"Nice night vision flashlight, although a bit cheaply made. It runs on a 9v battery and in order to change it you have to pull the entire circuit..." Read more

"...battery life is fantastic. You will sleep much better if you use this red light beam when you awaken during the night...." Read more

"Worked great for about a day, then it died. Checked the battery and charge was fine. Build quality in general seems questionable...." Read more

54 customers mention "Durability"12 positive42 negative

Customers report durability issues with the flashlight, noting that the glass lenses and port covers break off, and the thumb wheel falls apart.

"broke the first night I used it" Read more

"Gasket easily distorted and break, loss waterproof ability" Read more

"Very poor quality - cheaply made. The flashlight broke before I could even use it...." Read more

"cheaply made but well built, not as great as I thought it would be" Read more

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Cheryl Snyderman
Perfect for Astronomy
Reviewed in the United States on August 27, 2023
Style: ThermoTorch 3 Astro Red Flashlight/Warmer/ChargerVerified Purchase

I searched Amazon, hunter, and astronomy websites and could not find my exact requirements for a red ligh flashlight. The dimmable options are made of plastic and the others with low, medium, and high brightness settings often have a red light as a secondary option, and not necessarily the best red light for astronomy puposes (reading star maps; not messing with dark adjusted eyes). The flashlight is about 7 1/4" long with a diameter of about 1 1/4". (the 2.33" & 2.96" numbers the circumference measurements at either end of the flashlight). The 1 1/4 diamter" number is much more useful for understanding how it fits in your hand, which turns out to be actually perfect astronomy use and grip. There is an included wrist strap for attaching it to your hand. You could just as easily attach a longer strap so that you could hang it around your neck. While this flashlight has low, medium, and high brightness (lumens) levels (i.e. not fully dimmable), the brightest level is 90 lumens (note: for many other red light flashlights 90 or 100 lumens is typically the lowest, dimmest level). It's made of solid aluminum and is water resistant. All good for durability purposes. I also like that it uses a rechargeable lithium ion (USB charging wire inlcuded that connects to flashlight for charging). Finally, while I did not purchase it for the "handwarmer" function, it's good to know that this option is there should I ever need it.

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One person found this helpful

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Michael J. Borrelli
Easy to use with adjustable brightness.
Reviewed in the United States on September 24, 2025
Style: PowerTank Glow 5000 Red Flashlight/ChargerVerified Purchase
Easy to use and the adjustable brightness is great for use during star parties.

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OlGreySurfDude
Functional
Reviewed in the United States on August 16, 2025
Style: ThermoTorch 3 Astro Red Flashlight/Warmer/ChargerVerified Purchase
Works OK. Flashlight is reliable. Heater is slow to get going. Connection is oddball, so you need that exact cable. I got another brand that is more ergonomic, quicker to heat up and standard cable. But this works fine

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Margaret Thatcher's Summer Spectacular
A great unit for a great price
Reviewed in the United States on February 8, 2015
Style: Night Vision Red FlashlightVerified Purchase
I purchased this item despite the many negative reviews, and I don't regret the purchase at all. There are some facts you should be aware of when purchasing this light.

1) This is the most basic understanding anyone should have when purchasing any modern product. No process is perfect, and sometimes what you get is imperfect or DOA. It did not happen to me in this particular instance, but it may happen to you regardless of how much you have spent on a product, or its country of origin.

2) This is not a "cheaply made" product. The bulk of it is thick plastic, but some of the other mechanisms are thinner. Two plastic clips lock the front cap in place, and the lens is firmly adhered into the cap. It's unlikely that the lens would pop out unless the unit was mishandled in a rather extreme way. I don't see the lens popping out while the cap is fixed to the unit, simply because the portal at the front of the cap is much smaller than the lens. Outside of smashing the lens, that lens is not coming out of the front of the cap. It's equally unlikely that the lens popped out through the rear of the cap because of adhesives, and two pieces of plastic that bar its passage. Outside of errors during multiple stages of production, mishandling on the part of the courier, or mishandling on the part of the user, I don't see how the lens or front cap could be just falling off as others have claimed.

3) Another user complained that the switch could only turn the unit on/off and would not dim. I saw how this could occur, and it stems from the odd design of the unit. Inside the plastic shell is a circuit board, on top of which lay the two LEDs with a 9V battery at the very end like a caboose. It is simple to replicate the dimming issue if you do not replace the circuit board assembly as directed in the instructions(during, say, a battery change). The circuit board is meant to lay on a tiny spacer, and if it is slipped underneath the spacer, the dimming mechanism will not work properly. To prevent or fix this issue, simply follow the manufacturer provided directions to remove the interior assembly, and when you try to insert it back make sure to hold the assembly as close to the top of the unit as possible. You will know that you have the correct alignment by the function of the light switch, and the presence of a small space underneath the circuit board. My dimmer switch worked perfectly at the beginning, but I was able to replicate and fix this issue as previously described. It should be noted, that if you do not insert the interior assembly exactly as it extracts, it may fail to extract itself using the light switch in the future. Again, this stems from its odd design.

To conclude, this is a well-functioning, and cost-effective unit. It performs exactly as described, is well manufactured, and its plastic shell is surprisingly rugged. The design is odd, and a couple of quirks arise from that, but reading the instructions and handling it correctly will prevent most issues with the unit. So, $12 altogether was a fair price.

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23 people found this helpful

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Willie in MN
Look elsewhere
Reviewed in the United States on February 19, 2024
Style: PowerTank Glow 5000 Red Flashlight/ChargerVerified Purchase
This is a review of the PowerTank Glow 5000 which is a rechargeable USB battery bank plus red flashlight. (I mention that because there are reviews for a different flashlight that show up here too.)

I intended to put this in my astronomy bag for use in the field. It has a few drawbacks that outweigh the positives of having a dedicated red flashlight, so I would recommend looking elsewhere for a different flashlight. I haven't found one yet. Maybe the Apertura light.

Negatives:
1 - Power Switch - I did not like how easy it is to bump the power switch and accidentally turn on the flashlight. This could easily happen by accident if you store it in a bag or pants pocket.
2 - Bad Port Covers - They do not fit well (as others have pointed out). The rubber covers don't stay sealed and are useless for keeping moisture out.
3 - Too Bright - the dimmest setting is still quite bright.
4 - No way to just turn it on and off, while still being Dim. You have to click it all the way through Maximum brightness before it goes off.
5 - Heavy - Sort of to be expected but because it's a power-bank also, it's surprisingly heavy which could be a problem if you drop it. I would be surprised if it didn't break.
6 - Feels cheaply made. Doesn't feel like it will hold up.
7 - Comes with a cheap micro-USB cable (doesn't include a charger) and the cable was very gritty and poor-fitting to both the light and my phone charger block.

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Francisco
Perfect!!
Reviewed in Spain on December 2, 2015
Style: Night Vision Red FlashlightVerified Purchase

The shipment was really fast.
And the item was in perfect conditions.
What you see is what you get just like this

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I. Scott
Keeping hands warm
Reviewed in the United Kingdom on January 22, 2025
Style: ThermoTorch 3 Astro Red Flashlight/Warmer/ChargerVerified Purchase
Originally had the Celestron hand warmer and torch but after many uses over the years, the battery failed. Bought this one to replace. Keeps hands warm on those cold nights observing the stars but in addition, has red light so as not to detract from eyesight viewing as you have to adjust your eyes to the dark while observing and white light interferes with that. Additionally, you can now use as a power source so can top up phone if I run low taking astrophotography shots.

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Lim
happy with the product
Reviewed in Australia on September 13, 2020
Style: Night Vision Red FlashlightVerified Purchase
I like its size & the fact that the light strength is controllable. But there wasn't enough info about its warning message about its possibility to cause cancer. It referrs to California state's website, but it was hard to find the relevant info.

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Kevin W.
Solid build,performs well
Reviewed in Canada on September 6, 2024
Style: Night Vision Red FlashlightVerified Purchase
Compact size with a long lanyard keeps it handy for use at all you astronomy related functions

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KralNox
Utile
Reviewed in France on September 5, 2020
Style: Night Vision Red FlashlightVerified Purchase
Utile mais en revanche éclairage(rouge) vraiment faible même avec la molette à fond, à voir en changeant la pile...

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Celestron 93585 PowerTank Glow 5000 Portable USB Rechargeable Power Bank and Red Astronomy Flashlight - 5000 mAh Capacity, Includes Silicone Mount Straps, Black

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5.0 out of 5 stars Perfect for Astronomy

5.0 out of 5 stars Easy to use with adjustable brightness.

4.0 out of 5 stars Functional

5.0 out of 5 stars A great unit for a great price

3.0 out of 5 stars Look elsewhere

Top reviews from other countries

5.0 out of 5 stars Perfect!!

5.0 out of 5 stars Keeping hands warm

4.0 out of 5 stars happy with the product

5.0 out of 5 stars Solid build,performs well

5.0 out of 5 stars Utile

Product summary presents key product information Keyboard shortcut shift + alt + opt + D

Product Summary: Celestron 93585 PowerTank Glow 5000 Portable USB Rechargeable Power Bank and Red Astronomy Flashlight - 5000 mAh Capacity, Includes Silicone Mount Straps, Black

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About this Item

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Feedback

Perfect for Astronomy

Easy to use with adjustable brightness.

Functional

A great unit for a great price

Look elsewhere

Perfect!!

Keeping hands warm

happy with the product

Solid build,performs well

Utile

Product summary presents key product information

Keyboard shortcut shift + alt + opt + D