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ROMOSS USB C Power Bank, 30000mAh PD Portable Charger 18W 3 Outputs and 3 Inputs $24.04+Free Shipping

$24.04
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Amazon.com has ROMOSS USB C Power Bank, 30000mAh PD Portable Charger 18W 3 Outputs and 3 Inputs External Battery Packs Compatible for iPhone Xs Max, iPad Pro, Samsung S20 and More for only $24.04 After clip 35% OFF coupon. Shipping is Free

https://www.amazon.com/ROMOSS-300...237&sr=8-8
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40 Comments

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This comment has been rated as unhelpful by Slickdeals users
Joined Aug 2011
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#31
Quote from JohnJ5132
:
But airport security barely check any powerbank tho
This.
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Joined May 2020
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#32
Quote from nasst
:
Thank you! You wouldn't happen to know how to get airline approval for a battery? I'm assuming they just check to make sure the case is undamaged and puncture resistant?
Having traveled around 600,000 miles with about 500,000 of those being domestic (i.e. a LOT OF FLIGHTS), even I am not sure where to obtain that. You could easily obtain that information by asking a battery supply company.

https://lmgtfy.app/?q=lithium+battery+supplier
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Joined May 2020
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#33
please delete - double post due to slickdeals server issues
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Joined May 2016
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#34
Quote from sarcasmogratis
:
Looks shill-y.
This brand had been posted repeatedly recently. Some of the same accounts doing it.
Now boosted to Popular at 4TU.

No name battery packs are just a huge unknown both for quality of the cells and safety features built in.
I bought the last deal 30k without the display and and bought a 20k a couple years ago. Quality power bank. 30k might be too big for international flights though.
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Joined May 2016
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#35
Quote from nasst
:
Thank you! You wouldn't happen to know how to get airline approval for a battery? I'm assuming they just check to make sure the case is undamaged and puncture resistant?
Just to be safe, max size you should get is 26.8k.
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Joined Nov 2009
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#36
Quote from firebirdude
:
Yup. 26,800mAh is the cap without prior approval from the airline.
riiiight. and also, who cares and who checks?
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Joined Nov 2018
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#37
I bought this from a deal here about a year ago. Yes it is heavy but it takes forever to run out of power. We take this on road trips.

1 tip, charge with USB-C cable for a faster charge.
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This comment has been rated as unhelpful by Slickdeals users
Joined Oct 2014
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#38
Quote from 88TheDealer88
:
riiiight. and also, who cares and who checks?
Up to each buyer if they want to roll those dice, especially when you're pressed for time or have no where to leave it (return flight).

My experience, never checked inside the US and about 50% on international flights. But of course, my pack is 20,000mAh, so it's physically smaller and produces a smaller print through the scanner. Maybe a 30,000mAh pack would be a larger flag? Donno. But I sure a heck don't think it's worth the risk versus a 26,800mAh pack.
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Joined Jan 2012
No Way José Mourinho
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QA
#39
Quote from EagerTexture650
:
THIS IS A GREAT THING TO MENTION!

Whether or not you can bring it on the plane depend entirely on the chemical makeup of the battery and where you plan on storing the battery. In the case of lithium-based batteries the maximum allowable size FOR CARRY ON LUGGAGE is 300 Wh.

This battery [per specifications] is 30 Ah and at 5V, the nominal output voltage for USB, that works out to 150 Wh.

NOTE!! While this battery is legal for carry on per TSA, batteries with higher capacity than 100 Wh require airline approval to be carried on.

THIS BATTERY IS NOT ALLOWED TO BE STORED IN CHECKED BAGGAGE UNDER ANY CIRCUMSTANCES DUE TO SAFETY CONCERNS. YOU RISK A VERY HEFTY FINE OF UP TO $50,000 IF YOU ARE CAUGHT.

No huge deal, but you shouldn't conflate output voltage with nominal voltage. In the case of this pack (and most lithium cobalt packs) the nominal voltage is 3.7V, so this pack has a total watt hour capacity of 111Wh (3.7V x 30A), which matches the user manual. Thank you for the tip re: checking with airlines before carrying such a large pack. I was wondering why I keep seeing so many 26.x mAh packs, and now I know.
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#40
Quote from JohnJ5132
:
But airport security barely check any powerbank tho
Quote from LORD_raiden_128
:
This.
The responsibility for declaring hazardous cargo is yours. If you fail to declare it you would be the one in violation of the law and susceptible to penalty.
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#41
Quote from JohnJ5132
:
But airport security barely check any powerbank tho
Quote from LORD_raiden_128
:
This.
Quote from dimjim
:
No huge deal, but you shouldn't conflate output voltage with nominal voltage. In the case of this pack (and most lithium cobalt packs) the nominal voltage is 3.7V, so this pack has a total watt hour capacity of 111Wh (3.7V x 30A), which matches the user manual. Thank you for the tip re: checking with airlines before carrying such a large pack. I was wondering why I keep seeing so many 26.x mAh packs, and now I know.
You're correct; I was far too high at that moment to be using my brain. I have edited my original comment to reflect these accurate numbers. The rest of my comment is both accurate and applicable, however.
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