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ROMOSS Sense 8+ 30000mAh 18W Fast Charge Type-C PD Portable Power Bank EXPIRED

$23.40
$35.99
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ROMOSS Direct via Amazon has ROMOSS Sense 8+ Portable Power Bank (PHP30 PRO) on sale for $23.39 when you clip the 35% off coupon on the item page. Shipping is free.

Thanks to community member hamster6052 for finding this deal.

Deal Instructions:
  1. Visit ROMOSS Sense 8+ Portable Power Bank and add the item to cart
  2. Clip the 35% off coupon on the item page
  3. Proceed to checkout
  4. Your total should be $23.39, shipping is free
Features:
  • Weight 671g/23.66oz
  • Inputs
    • USB Type C
    • Micro USB
    • Lightning
  • Outputs
    • USB 1
    • USB 2
    • USB Type C
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Original Post

Written by
Edited January 7, 2021 at 01:40 PM by
Amazon.com has ROMOSS 30000mAh Power Bank Sense 8+, 18W PD USB C Portable Charger with 3 Outputs & 3 Inputs External Battery Pack Cell Phone Charger Battery Compatible with iPhone 11, Xs Max, MacBook, iPad Pro for only $23.39 "when you apply 35% off coupon at product page" at checkout. Free Shipping
https://www.amazon.com/ROMOSS-Por...06&sr=8-36
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$23.40
$35.99
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Questions & Answers BETA
aditya_awesome asked this question on 01-09-2021 at 08:50 AM

115 Comments

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Joined Jan 2006
L5: Journeyman
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#46
Quote from RockyGW
:
I'm not too sure why I actually went and looked this up but I guess I was genuinely curious as I was under the impression that 26,800 was the largest they would allow.

https://www.faa.gov/hazmat/packsa.../?hazmat=7 [faa.gov]
I brought this from the previous SD post. Then on that previous SD, someone mentioned 26,800 is the limit. I thought 26,800 was the limit and I could not take this as a carry-on.

Are you saying yes we can? If so thank you for finding the documentation on it. Sorry for the limited knowledge watt-hours so such as they mention it frequently.

So if i take this, I cannot get stopped? If i show that link it shall be the savior?

Choose Hope. Choose Hope. Choose Hope.
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Last edited by amp9020 January 6, 2021 at 04:13 PM.
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Joined Nov 2011
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#47
I bought one of these in late 2019. I used it occasionally during long drives so my kids could charge their tablets. The battery holds a very substantial charge and my kids were able to use their Samsung tablets while charging. I used the battery occasionally and only had to charge the battery less than 10 times since I've owned it. The problem I ran into is that Romoss offers ZERO support. After about 10 months, the battery on my unit "bulged". I tried contacting their support several times and received ZERO response via email. There is no contact phone number for their support. I've tried their website, which is useless. I've also sent multiple requests through Amazon. After at least 10 different attempts, I've given up and the unit is no longer in warranty. If your unit doesn't malfunction, then this is worth the price and you will probably love the battery pack. If your unit DOES malfunction, then you are SOL.
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Joined May 2015
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#48
Quote from amp9020
:
I brought this from the previous SD post. Then on that previous SD, someone mentioned 26,800 is the limit. I thought 26,800 was the limit and I could not take this as a carry-on.

Are you saying yes we can? If so thank you for finding the documentation on it. Sorry for the limited knowledge watt-hours so such as they mention it frequently.

So if i take this, I cannot get stopped? If i show that link it shall be the savior?

Choose Hope. Choose Hope. Choose Hope.
I don't believe you can take this on a flight unless you have specific approval beforehand from the FAA (that is how I am reading it at least). I personally won't risk taking this on a flight and we will be using this around the house or in a car for when we travel. I have 3 other battery packs (26,800) that we take on flights no problem as a family of three.

Taken directly from the FAA website:

Size limits: Lithium metal (non-rechargeable) batteries are limited to 2 grams of lithium per battery. Lithium ion (rechargeable) batteries are limited to a rating of 100 watt hours (Wh) per battery. These limits allow for nearly all types of lithium batteries used by the average person in their electronic devices. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101-160 Wh) or Lithium metal batteries (2-8 grams). This size covers the larger after-market extended-life laptop computer batteries and some larger batteries used in professional audio/visual equipment.
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Joined Nov 2017
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#49
I've commented many times before, but I own three of these and I've been very satisfied with them - lots of juice available.
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Joined Jul 2010
L6: Expert
1,751 Posts
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#50
1. You cannot board with a 30000 mah battery.
2. 30000 mah could be fake. They can claim it a million mah if they want. But by common sense, 30000mah for $20+ dollar is too good to be true.
Edit: from Amazon review, a dude report it is tested only 19220mah


I don't really trust the rating since they can buy it at a low cost.
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Last edited by sam19777 January 6, 2021 at 04:47 PM.
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Joined May 2012
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#51
I bought this and it's brother with the LED readout. I've also flown with both of them this year, twice each. I guess I got lucky with TSA.... But I will continue to fly with them.
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#52
Quote from jdn
:
Sent back two as they did they same issue. Once my phone was charged, the battery turns off and then my phone discharges. I'd wake-up with 87% sometimes. Even my cheapo chargers keep my phone at 100% until they give it up.
Need to update permissions on those apps.

Either that or the CIA is spying on you while you sleep
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Joined Sep 2014
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#53
Got this thing last year, different model. This thing is a work horse. I use it daily and it's been taking a beating.
I would definitely recommend it, especially at this price. no issue taking it on a plane either. I went from LAX to Puerto Vallarta and back with no issues at airport security.
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Last edited by RuckingFetard January 6, 2021 at 06:12 PM.
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#54
Bought this one several months ago for slightly higher price. Work very well and charges S9 5-6 times. Charge lasts a really long time and turn on automatically when a phone is connected. Really good value for money and a great device. Would buy again if needed but I do not need one until this one dies.

Only note for those buying first time that it real thick and heavy.

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Joined Apr 2014
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#55
I love this battery pack. I bought two packs two years ago. Still working
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Joined Jun 2004
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#56
Absolutely awesome charger for the price. Quick Charging of the portable battery too which is cool, besides the ability to charge itself with iPhone, Micro USB or USB C. I've never seen that before in a power bank. Feels well made too. Got it the last time it was exactly this price which was Sep 24, 2020.

Beware, this thing is huge though. But if you need to charge several devices over a couple of days this thing is a beast and gets the job done.
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#57
Quote from kingsfan626
:
I bought this last time and the charging time was slow. Even using USB C to USB C my S20 would show regular slow charging. On top of that this is very heavy so I ended up returning it.
The cheap Omars one I bought a while back charged faster.
Have a Note9 and a Note8 and was able to Quick Charge through both the USB C connector as well as the USB A connector. No issues so far.
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Joined Jan 2021
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#58
Can you even fly with a battery this large?
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#59
Quote from Peerless_Warrior
:
This guy is losing a whopping 13% over night. I've owned Android and Apple phones, never heard of such a thing. If their phone isn't ancient, I suspect a rogue app like Facebook or Instagram is killing the battery.
I do podcasts to Bluetooth to go to sleep, so I run the phone down a bit, never measured but it def uses battery
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Joined Aug 2009
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#60
Quote from upsidedownfunnel
:
That's true for most of these battery packs. I'd like to know by what metric though. Did they actually open it up to see the capacity of the cells they use? If so, that would be misleading and false advertising. However, if they simply tried to charge their device and got less total energy than expected, that is not necessarily false advertising since all battery packs lose some energy in the charging process.

EDIT:

I just read one of the critical reviews. I've pasted it below for reference. The problem is they are not taking into account the actual energy capacity of the battery. They are simply assuming mAh can be converted between his MacBook and the battery pack and the iPad which is incorrect. The batteries in the MacBook are 3S which means they have a nominal voltage of something like 11V while these battery packs are 3.6-3.7v. So at least for this one, it is simply the user thinking they're smarter than they are. I mean, does he really think a $35 battery pack that is the size of two smartphones will be able to charge his laptop 7 times?? He must be lying when he claims he has a 20k mAh battery that can charge his macbook pro 4 times. That would break the laws of physics and would also not make sense why laptop manufacturers don't just put bigger batteries in their laptops if they can be so cheap and so small.
mAh is an incomplete measure of capacity, and not good for comparison purposes because it doesn't take into account voltage. Wh is the more reliable measure.

The mistake that review makes is to assume that the energy in the battery pack's cells will be transferred to a device in a 1:1, 100% ratio. The real world doesn't work that way.

The circuits used to convert the nominal voltage of the battery pack's cells (typically 4.2-4.35 for Li batteries) to the output voltage, consume energy, and the process isn't 100% efficient. Same goes for the circuits that take the input voltage, and charge the device's battery.

There is also a small loss in the wired connection. Wireless connections are worse, much less efficient, and make little sense in a portable battery pack, as a good portion of the battery's energy goes to waste from the inductive coupling.

All of this has to be considered before even contemplating the quality of the cells used in the pack, and whether they measure up to their rated specs.
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