Romoss Sailing1 2600mAh High Performance Power Bank, 1x USB, LED Torch,Battery Level Indicator,Powerful Booster, Synchronous Charging & Discharging.
$15 seems like a good price for brick and motar, $12 shipping kills the deal if you don't have a store near you.
No it isn't! Please check before comment…
Please check before comment…
I did check.
$19.68 for a ROMOSS 10,400mAh
http://www.tmart.com/ROMOSS-10400mAh-3.7V-Universal-Portable…
4 times the capacity for only a few dollars more.. (and you don't have to pay the $12 shipping)
Actually it's a different model, so you are comparing the higher capacity with added features, to the lower capacity with all the added features (torch, battery indicator etc…)
Some may want the bells and whistles.
The photos seem to indicate the other features are on the higher capacity model.
I got one about a month ago and it has a battery indicator.
No LED torch though, but my phone has one anyway…
JV…sorry, I thought you meant the price from scorptec.
No problem…
That's fake though. I got one yesterday from their previous sale and it is not a genuine Romoss Sense4.
How do you know it is fake?
That's fake though. I got one yesterday from their previous sale and it is not a genuine Romoss Sense4.
this ^ you cant compare overseas to local known genuine stock.
edit: and you will notice that the previous deal from tmart has been removed caus it was a fake
I looked at the image below and looked at my product which matched the fake side.
http://i01.i.aliimg.com/img/pb/091/582/948/948582091_694.jpg
[edit]
Looking again…
- My packaging doesn't match either of those dimensions. Mine is 12.5cm x 17.6cm x 3cm - Who knows
- No pouch - Fake
- Has English & Chinese writing - Genuine
- White cardboard inside but internal packaging looks different to both - Who knows
- USB cable has no "Romoss" logo - Fake
- USB sockets have writing as per pic, not universal USB logo - Fake
So who really knows!
That isn't a ROMOSS, it's a cheap knockoff without the same protection and cheap unmatched batteries. The proper one is around $35-45.
I just realised, I got mine from Meritline when they had a discount code…
http://www.meritline.com/romoss-10400mah-external-battery-pa…
Out of stock now, paid $22.99
Ships from U.S warehouse
less likely to be fake ???
less likely to be fake ???
and again this is my whole problem with all these battery deals. less likely? yes. but how do you know its just not a better fake than others?
but the power cord and the sent from the US are both good indicators that maybe it is genuine. but still who knows?
The Romoss ebay store is a good find.
if its fake, its too much , but if its original id rather go with the lower mah, then a fake with higher mah.
so , is it the real one or?
is it the real one or?
who knows ?
at least if it is fake you can send it back caus its an aus seller. maybe the rep should guarantee paying return shipping if it turns out to be fake (as so many in the past have turned out to be)?
Mine works fine, have no intention of sending it back…
I can't tell whether it's a fake or not.
I might not have bought it had I known for sure that it's a fake, but too late now.
you realise if it is a fake its probably also using cheaper unprotected cells right? you do know what can happen with unprotected cells?
and this is my concern with all these deals posting unknown/suspected copies. even if it is a fake that still had advertised mah does that even matter if they are a fire/explosion risk?
edit: and this being OzB, does it even matter if it burns down your house in the middle of the night killing you and your family……. as long as you saved $2 buying the fake?
Price is very important. If your genitals are blown off to save a few dollars then that is an acceptable risk.
They all use unprotected cells but the proper ones have onboard protection for each of the cells and uses Sanyo batteries.
The cheaps ones have little to no protection and use cheap unmatched batteries. Given the chances of thse units exploding I wouldn't be buying them especially when you look at the injuries (third degree burns) that you can sustain in a short time or as you pointed out the risk of fire during charging.
They all use unprotected cells
/me sighs
https://www.ozbargain.com.au/node/139994
two Samsung 3000mAh 3.7 v 18650-30B Lithium Ion batteries
quick google for the battery finds
http://budgetlightforum.com/node/17549
Samsung ICR18650-30B 18650 3000mAh Protected
unless you have some evidence otherwise i wont hunt any deeper, but seems your wrong?
I'm talking about the Romoss units, I didn't say EVERY power bank uses unprotected cells but Romoss does.
Protected cells have a PCB added to one end of the battery which in the case of batteries like Sanyo and Panasonic is shrinkwrapped with clear shrinkwrap which adds to the thickness and depth.
These power banks and talking about Romoss along with some other major ones use unprotected cells from Sanyo, LG and a few other brands and they are connected to the PCB which contains the protection circuitry for each of the cells.
So I will say it again Romoss all use unprotected cells but they have protection on board whereas the knockoffs may not.
I'm talking about the Romoss units
do you have any evidence romoss use unprotected cells? it would very much surprise me if genuine rosmoss banks use unprotected cells.
Protected cells have a PCB added to one end of the battery
indeed they do which is why they are called protected, it protects each cell from over/under charge etc making them safe(er?) in all environments, unlike the batteries used in dell laptops some years back. remember the exploding unprotected cells in dell laptops?
which in the case of batteries like Sanyo and Panasonic is shrinkwrapped with clear shrinkwrap which adds to the thickness and depth.
well they are clear wrap, but with what looks like coloured wrap underneath, but thats teh same as the unprotected cells so im not sure what your point is there?
they are connected to the PCB which contains the protection circuitry for each of the cells.
best practice as far as i have read is to have not only protection in each cell but also in the charging circuit as well. it costs next to nothing more and its an added level of protection which is what you pay for when you pay a lot of money for a quality cell/charger/power bank
again, im no expert im just going by that the "experts" have said. if you have anything to support your claims (web pages and the like) im more than happy to learn more about it.
oh and iirc the whole dell problem of exploding batteries came down to exactly what your saying, unprotected cells and protection only in the charging circuit.
the replacements packs for the recalls were protected cells which stops them exploding
http://en.wikipedia.org/wiki/Dell_Latitude#Battery_recall_af…
https://www.youtube.com/watch?v=FuNSzs679Sw
again, this is only what i remember from back then, my memory is often a bit flakey so happy to be shown wrong
The batteries are sealed inside the power bank, you need protection on the PCB where each battery connects and not on each battery. You do not want to run multiple protection systems at the same time (on the battery and at the other end of the short wire). If you add protection to the battery you do not require it on the PCB for the battery but this increases costs and makes it harder to replace the batteries in the future.
Comparing a collection of batteries with a charger built in with protection for each battery on the PCB inside a sealed unit to a separate charger (inside the notebook) for a removable battery pack that did not have protection is like comparing apples and oranges.
What is your source of this best practice? I have been using 18650 batteries for many years now and have a collection of over 100 and have done plenty of research into areas like protection on batteries and having multiple protection systems against overvoltage and low voltage only creates reliability problems and poor performance.
And on the point you posted below about the dell batteries they required the protection because they wasn't any in the battery pack.
i had written out a long winded reply to all the points you made here, but going by the back and forth you have had in a couple of previous deals im going to give up because the outcome is already plainly obvious to me.
for anyone else playing along at home, this is why you only use protected cells http://www.candlepowerforums.com/vb/showthread.php?262234-TK…
you can carry on as long as you like, and history shows you like to even in the face of insurmountable evidence to the contrary, about how safe unprotected cells are, your ideas are obviously not going to be swayed
apparently an entire kindergarten in Brazil was blown to smithereens by a faulty imitation Romoss charger.
I find it interesting that you were advocating that all fuel containers are the same as they meet the same standard but you are so passionate about safety when it comes to batteries. Perhaps you should look at the injuries caused by fuel (in particular petrol) when it ignites.
There are photos of opened up Romoss units online which clearly show these are using unprotected cells and for further proof (as it appears you know everything) the length of the S4 which has 4 x Sanyo 18650 cells is 138mm and 21.5mm thick. The cells are stacked side by side in a row of two. Sanyo 18650 protected cells are around 69.4 to 69.6mm long. Sanyo unprotected cells are 65.1mm. Sanyo datasheet for unprotected 2800mAh cells is here - http://www.panasonic.com/industrial/includes/pdf/ACA4000CE30…
Do the maths, allow 2mm each end for plastic thickness and you have 138mm - 4mm = 134mm. 65.1mm x 2 = 130.2mm giving 3.8mm for welding and isolation from the next cell. Even if you assumed 68mm for the protected cells this gives you 136mm which is too long.
I'll say it again, it makes no sense to use cells with protection on the end of them in a sealed unit - put the protection for each cell on the PCB. When you are using the 18650's loose I would nearly always use protected cells especially when you are using multiples together. Protected cells have pros and cons which is why many still use unprotected cells especially in single cell applications.
I have never said that unprotected cells are safe in this application, read what I wrote again. I suspect that you don't understand the difference between protection on the cell and protection on the pob and I don't know how to explain this to you in an manner you can understand.
Surprise surprise, Nosdan thinking he knows everything about anything - yet posts no good deals
@maverick ive already said im not going to keep replying to this. your just going around in circles again… i didnt say that these genuine ones didnt have protection just that id be surprised, which i am. even the "no name" banggood ones (which i already own) are protected so ill be sticking to them and not this brand.
@greatwhitehunter sorry, no food for trolls today. ;) PS its not me that knows everything its that magical google fairy that helps me learn when i have questions/doubts that makes it seem that i know everything, try it out some time :)
It's nothing new gwh. Glad that other people are noticing too.
Edit: Thanks also gwh for posting over 50 deals. love to see users that contribute.
Related: Echo Chamber Effect
The echo chamber effect[10] refers to a phenomenon that occurs when people are isolated in social circles that confirm personal biases, beliefs and ideologies. Online, the phenomenon became amplified after transitioning from BBS sites to social networking communities in the late 2000s, where users and algorithms could curate what feeds they followed based on their own interests and biases. The effect has often been criticized for allowing false information to spread without being challenged and creating barrier in communication between those who share differing opinions.
still no troll food for you either modokun :)
hope your enjoying your day as much as i am even if your continued trolling gets you no free meals :D
lol at the price.
Isn't the 10,000mAh only a few dollars more ?