On Sat, 09 Jan 2016 15:20:00 -0000, Adam Aglionby wrote:
On Saturday, January 9, 2016 at 3:08:59 PM UTC, Mr Macaw wrote:
On Sat, 09 Jan 2016 14:59:14 -0000, Adam Aglionby wrote:
On Saturday, January 9, 2016 at 11:07:00 AM UTC, Mr Macaw wrote:
On Sat, 09 Jan 2016 10:59:12 -0000, Bertie Doe wrote:
"Mr Macaw" wrote in message news
I'm finding it rather difficult to buy real Lithium Ion batteries (like
18650s) online. By real I mean something like Panasonic etc. I've had
Chinese unbadged ones before and they've held 1Ah instead of the rated
2.6Ah. The "Genuine" ones don't seem to look like they used to, no makers
badge and fancy colours, just a plain green shell with some black
writing. Are these real?
7Dayshop is a genuine company. I've been using them for a few years,
although their own-brand rechargeables, are no more than medium quality.
Putting 18650 into their search gives :-
https://www.7dayshop.com/catalogsearch/result/?q=18650
http://www.ebay.co.uk/gds/Top-7-1865...8349265/g.html
That answers my question - the ones they call genuine Samsung look very plain, I would have thought Samsung would want them to look better than that to avoid copies:
https://www.7dayshop.com/products/sa...BATSAMBLU25RX4
E Fags have propelled 18650 development, one linked is an INR as against IMR or ICR 18650 lion
https://www.reddit.com/r/electronic_...to_know_about/
That link doesn't tell us everything about every type of cell. Which ones have higher internal resistance? How much of a resistance increase is it? And is there any other significant difference? (Apart from the capacity which you can obviously see from the rating on the side).
My Panasonics are NCR18650A, so what type are those? Is it a combination of INR and ICR, hence the NC?
I'm happy with the Panasonics anyway - I tested them and they have the full rated capacity of 3.1AH when drained over several hours in a torch, unusual for a battery to actually do what it says on the tin!
"NCR batteries are a new type of bat- tery manufactured by Panasonic. NCR batteries use a Cobalt cathode like ICR batteries but have the same hybrid makeup with nickel which IMR batteries have. This provides for higher drain capabilities while also having
higher overall battery capacity. "
http://vapetv.com/forum/thread/80/ba...ed-and-safety/
Big subject
http://batteryuniversity.com/learn/a...ased_batteries
Looks like I've got good ones then. I did look at a load of graphs on reviews to find the ones that had the best capacity. There are so many makes that simply aren't the capacity that it says on the tin, and I have to wonder why they aren't taken to court by trading standards. I mean if you bought a pint of milk in Asda and it only contains 3/4 of a pint, there'd be a public outcry, so why can Trustfire sell batteries rated at 2000mAh which are actually only 500mAh? I guess you could get them free from most Ebay sellers by moaning that they're **** and getting your money back, then they can't be bothered paying for the return postage.
--
"Oh god," sighed the wife one morning, "I'm convinced my mind is almost completely gone!"
Her husband looked up from the newspaper and commented,
"I'm not surprised: You've been giving me a piece of it every day for twenty years!"