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Mine Exploration Forum

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Author Super power battery bargain
Roy Morton

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Joined: 09/10/2007
Location: Redruth Cornwall

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Super power battery bargain
Posted: 02/03/2016 23:50:34
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You've got to laugh at the gall of these guys! 9.8 AH!.....If I can obtain that sort of power from 18650's I should be able to replace my car battery with 8 of them in a 4 x 4 series / parallel config Laugh LaughLaugh ....Oriental measurements again!

http://www.ebay.co.uk/itm/8x-3-7V-9800MAH-18650-Protected-Li-ion-Rechargeable-Battery-Flashlight-Charger-/301371153788?hash=item462b1edd7c:g:U~8AAOSw--1WtZav

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"If whippets int' bath, where's t' coal!?"
IP: 81.156.125.119 Edited: 03/03/2016 03:34:13 by Roy Morton
RichardB

Joined: 18/11/2009

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Super power battery bargain
Posted: 03/03/2016 07:05:43
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Roy Morton wrote:

I should be able to replace my car battery with 8 of them in a 4 x 4 series / parallel config Laugh LaughLaugh


You can actually get car jump packs that are basically that, and they do work. A few people I know on a car forum have tried them out. This sort of thing...

http://www.amazon.co.uk/gp/product/B011AAIHVC?keywords=jump%20pack&qid=1456988349&ref_=sr_1_2&sr=8-2
IP: 86.186.147.175
rufenig

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Joined: 18/03/2008
Location: Shropshire Hills

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Super power battery bargain
Posted: 03/03/2016 07:59:44
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Chinese quality batteries with Chinese charger
Assembled with Chinese quality control.

I would estimate they have more chance of going up in flames than a box of Swan Vesta matches!
IP: 51.9.91.179
royfellows

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Joined: 13/06/2007
Location: Great Wyrley near Walsall

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Super power battery bargain
Posted: 03/03/2016 09:24:25
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The big issue is that people will believe this sort of rubbish and use it as a comparison yardstick.

If only the Sony/Panasonic batteries were as good as what these clever Chinese people can build!
Laugh

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We are what we are through what we become.
IP: 88.105.227.176
Daggers

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Joined: 05/04/2009
Location: Ashton-Under-Lyne

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Super power battery bargain
Posted: 03/03/2016 12:09:48
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Roy Morton wrote:

You've got to laugh at the gall of these guys! 9.8 AH!.....If I can obtain that sort of power from 18650's I should be able to replace my car battery with 8 of them in a 4 x 4 series / parallel config Laugh LaughLaugh ....Oriental measurements again!

http://www.ebay.co.uk/itm/8x-3-7V-9800MAH-18650-Protected-Li-ion-Rechargeable-Battery-Flashlight-Charger-/301371153788?hash=item462b1edd7c:g:U~8AAOSw--1WtZav


And at the bargin price of £7.99 for 8 with a charger, do these batteries actually contain any lithium.

Laugh

--

Steve (Daggers) Dalgliesh PDHMS, WMRG, DCC, Welsh Mines Society
IP: 31.55.26.26
royfellows

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Location: Great Wyrley near Walsall

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Super power battery bargain
Posted: 03/03/2016 12:30:25
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What with the torches and probably a lot of other stuff its all out of hand.
Are Trading Standards actually that powerless to act?

One could think of quite a few jokes about Chinese second hand car dealers
Laugh

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We are what we are through what we become.
IP: 88.105.227.176 Edited: 03/03/2016 12:31:35 by royfellows
lozz

Joined: 03/08/2012
Location: Cornwall

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Super power battery bargain
Posted: 03/03/2016 12:37:48
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Maybe they meant microamperehoursSmile

Not all stuff from China is tat though, I recently bought a DDS VFO that was made in China, stable to less than one part per million as I tested it.

Lozz.
IP: 81.153.15.80
John Lawson

Joined: 09/12/2010
Location: Castle Douglas Dumfries & Galloway

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Super power battery bargain
Posted: 03/03/2016 19:08:42
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Whilst not attempting to contradict anything that other members have posted, it is my opinion, that the main problem with Chinese or for that matter, emerging economies, is the lack of quality control.
The more savvy US and European, manufacturers, send staff over there to ensure that this takes place.
If you are buying something from a purely, Chinese or Indian manufacturer, then this quality control can be distinctly lacking.
IP: 81.129.213.118
RAMPAGE

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Joined: 01/03/2015
Location: Everywhere

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Super power battery bargain
Posted: 03/03/2016 19:16:22
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probably recycled laptop batteries, most cheap 18650s seem to be.

I brought a 12,000 lumen hand torch last year for about 25 quid, just for giggles really. Needless to say it was pants, not a patch on the old P7 torches of 6-7 years ago that were labelled as 900 lumens, and even that was an overestimate

I think people just print what they like to make it sound good.
IP: 87.224.72.55
Mr Mike

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Joined: 09/06/2007
Location: Bury - In The Laboratory

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Super power battery bargain
Posted: 04/03/2016 07:41:23
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The ebay listing seems to have changed to 4000mAhr now ?? Amazingly the wrappers match this as well!

--

Mr Mike www.mineexplorer.org.uk
IP: 78.148.127.42 Edited: 04/03/2016 07:42:00 by Mr Mike
royfellows

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Super power battery bargain
Posted: 04/03/2016 09:22:02
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I think I sense Trading Standards somewhere.

Its still unbelievable, just who follows this website!
Shocked

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We are what we are through what we become.
IP: 88.105.227.176
RichardB

Joined: 18/11/2009

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Super power battery bargain
Posted: 04/03/2016 17:39:36
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4000mAH is still about double the true value isn't it? IP: 86.186.147.175
rufenig

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Super power battery bargain
Posted: 04/03/2016 18:13:10
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I have ordered some for a laugh.Blush
If they turn up I will try to measure the capacity.
IP: 51.9.91.179
royfellows

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Super power battery bargain
Posted: 04/03/2016 18:24:28
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RichardB wrote:

4000mAH is still about double the true value isn't it?


We dont know. Recycled laptop batteries will usually have the remains of a solder tag, but some of the manufactured stuff is rubbish.

I was tempted to order some. If you ensure that the cell is fully charged, check the voltage on a meter to see how good the charger is. Should be 4.2V. Then connect to a 1 amp drain is easiest, connect through a multimeter for a better picture.
I would connect to a XML LED through 3 X 7135 chips, should be 1050 mA, near enough. Unless someone can think of something better.

Some of this stuff is better than expected and you wonder why they have to missell it.

Maybe the 9800 mAh was a sales ploy knowing everyone would be buying them to test just for a laugh. Orientals are supposed to be inscrutable.

Laugh

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We are what we are through what we become.
IP: 88.105.227.176
rufenig

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Super power battery bargain
Posted: 04/03/2016 18:53:14
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That is what I intend.
Plus I will measure the current draw. Smartass
IP: 51.9.91.179
Andy Mears

Joined: 23/12/2012

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Super power battery bargain
Posted: 04/03/2016 22:07:07
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I think I'd probably go for the simple, primitive solution of using filament lamps as the load - they are not bad as a crude way of drawing a fairly constant current. When you think about it as the voltage drops they get dimmer - filament less hot so lower resistance. Be interesting to see what you get at different loads. I assume the rating is at a fairly slow discharge.
Regards Andy
IP: 78.150.114.235
Roy Morton

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Joined: 09/10/2007
Location: Redruth Cornwall

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Super power battery bargain
Posted: 04/03/2016 23:20:53
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Mr Mike wrote:

The ebay listing seems to have changed to 4000mAhr now ?? Amazingly the wrappers match this as well!


Don't be disheartened Mike, there's another seller here Laugh

http://www.ebay.co.uk/itm/2-x-18650-3-7V-9800mAh-Li-ion-Rechargeab-le-Battery-2-Slot-AC-Charger-UK-Plug-/291638637890?tfrom=301371153788&tpos=top&ttype=price&talgo=undefined

--

"If whippets int' bath, where's t' coal!?"
IP: 81.156.125.119
rufenig

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Super power battery bargain
Posted: 05/03/2016 07:42:40
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That is the same seller. "eshop-love"
The 9800mAh Li-ion Rechargeable Battery
is shown as out of stock! Blink
IP: 51.9.91.179 Edited: 05/03/2016 07:43:10 by rufenig
rufenig

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Super power battery bargain
Posted: 05/03/2016 07:52:08
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Andy Mears wrote:

I think I'd probably go for the simple, primitive solution of using filament lamps as the load
Regards Andy


It is simpler for me to use one of my headsets with 4 0ff 7135 regulators theoretical 1400 ma draw. I can get 1 single or multiple cells in series to try them measuring run time and current draw. Also re-charge time at known current.

They are shown as dispatched so let's wait and see what turns up.
IP: 51.9.91.179
lozz

Joined: 03/08/2012
Location: Cornwall

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Super power battery bargain
Posted: 05/03/2016 14:21:00
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Just for something to do:

https://www.youtube.com/watch?v=ln8Mlz4NsW8

Lozz.
IP: 81.153.15.80 Edited: 05/03/2016 14:28:00 by lozz
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