Any Lithium ion battery BF deals?
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Anyone in to electronics/batteries etc know of any good EU/UK BF deals?
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Dunno about EU/UK but homedepot.com is having some pretty good sales in the US and Canada. What are you looking for? If really big stuff I'll PM you a link.
just good individual cell prices or pack prices, 18650's or 25000+ mah pre made's
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http://www.nkon.nl/ is supposed to be good seller in general. I believe they ship to the UK (from NL). They stopped shipping to the US a while ago, causing some sadness here.
checking it out, thanks for the PM too
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grabbed 20 of these: https://www.nkon.nl/rechargeable/li-ion/18650-size/samsung-inr18650-25s-2500mah-25a.html
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Nice I guess! Those are high current cells, a bit more expensive than regular cells of the same capacity, or lower capacity than regular cells of the same price, but I guess that is what you want
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Don't blow up the farm Ant.
But seriously, you're doing exactly what I want to do.
I reckon I can easily harvest 2kwh minimum for 8hrs with my shadow-free roof area.
nvm
www.nkon.nl is great and so is https://akkuteile.de
Both reputable and reliable suppliers for cells and batteries.
Amitz, a very stable genius (it's true!) and Grand Rectumfier of the official LESLOS® (LES League of Shitposters).
Certified braindead since 1974 and still perfectly happy.
Ant uses
What father and son are doing in this video is close to retarded. 18650 cells can be dangerous if treated that way. They have only been lucky that nothing bad happened. Gosh. People.
Amitz, a very stable genius (it's true!) and Grand Rectumfier of the official LESLOS® (LES League of Shitposters).
Certified braindead since 1974 and still perfectly happy.
I remember one video about someone showing his wife how easy it is to split logs for firewood with an axe by putting them in a tire so it keeps the logs together for splitting.
She took a swing, missed the logs, hit the tyre and the axe bounced back into her mouth... she used to be pretty.
Amazing what people will do for views.
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That reminds me of this:
https://www.independent.co.uk/news/world/americas/youtube-shooting-death-monalisa-perez-pedro-ruiz-a8257411.html
Not a BF deal or specifically EU, but....
https://www.ebay.com/itm/LiFePO4-3-2v-50Ah-Prismatic-Cell-Lithium-Iron-Li-ion-Battery-1-Unit/362645068518
These are pretty awesome. Set up 4 in series and you can use it as a "drop in lead acid replacement", as the lifepo4 voltages are compatible with that use. Better cycle life than traditional lithium ion, and less dangerous as well.
Dunno but I occasionally check in on youtuber HBPowerwall - he's always busy tinkering with this kind of stuff & I like his down to earth style
(no affiliation)
Because buying batteries off eBay is always a great idea...
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I have had some good experiences, no point in shitting on ebay because a few people are dodgy, just do your homework and know what you are buying first.
If you are prepared to use it the buyer protection is pretty solid.
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I harvest 18650 batteries out of power banks.
https://www.amazon.co.uk/EC-Technology-Portable-22400mAh-Smartphone-Black-Red/dp/B00F5Q4F0U
Try plutonium battery.
Same one as in Nokia C3310.
I've had worse luck with Amazon than I have eBay. Got some outright clonefrauds sent from Amazon, and they didn't even give a shit. Then I got an OBDII bluetooth reader with both pirated and malware for Android, and finally was sent a box with half of the product missing (not damaged). Fuck Amazon. At least eBay gives me a chance to get my money back if they refuse to give me what I paid for.
#fuckBezos
"It's a hard life- to be a stick insect." - Karl Pilkington
+1 to that. Ebay is great if you pay with PayPal. You can get your money back easily. Amazon is crap if outside US. If I have to send back something with my own shipping cost, that cost me more then the product.
My OBDII reader from Amazon came with a mini CD containing a single folder named license that only contained a crack.exe.
El Jefé.
IN THE NEWS
Two Held with Drugs in Bengaluru ( i think @vyas lives there too) Shipped Through Amazon From Canada ...
Amazon a Silk Road in the making ?
I swear I only bought Li-On Batteries from amazon.in
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My experiences with ebay and amazon are exactly the opposite. Here, generally speaking, ebay sucks and amazon rocks. Packages arrive sooner than expected and if there's any issues with them, you can get a pretty immediate refund without bothering with details. Returning products is generally free.
#fuckPayPal
Only once Amazon sent me a package (a day ahead the estimated delivery) and the product was missing (Bluetooth headphones). First I got refunded and then I've been delivered a similar product I've ordered that same day. The second package still arrived before the estimated date of the first one, product included this time
Now, I'm not a Prime user (unless they offer a free 1-month trial, typically at least once a year) and I shop on Amazon no more than once every three-four months. I prefer other local, regional online shop stores (usually they're even cheaper) or, even better, face-to-face shopping with retailers in their meaty incarnations. I'm lucky enough to live in the countryside yet within few km from a metropolitan area, so there's plenty of choice
I've yet to venture properly on those Chinese Amazon clones. I've had only gearbest sending me something once and I've ordered on Aliexpress some Thinkpad replacements a couple of times, and some other stuff, mostly IT-related and non-critical. Biblical delivery times, the products where ok. I got a couple of batteries too, they were ok.
There's a ton of fake lithium ion cells out there (i.e. labels saying samsung such-and-such with all the right numbers, with some crap cell inside) so I wouldn't go anywhere near amazon or ebay. There are a few vendors that are able and willing to stock authentic cells. r/batteries on reddit is a decent source of info.
On
or
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My limited experience with those "Chinese Amazon clones" has been fine but I did my own research beforehand, so I'd totally second the tip coming from @willie to double-check before ordering. I don't particularly care about "Authentic" cells, I'm fine enough with cells produced in the same identical facilities and performing on par or better than "Authentic" ones. But do your research.
If I were forced to blindly pick an online retailer, I'd choose Amazon over Ebay or Aliexpress, actually. Yet YMMV it seems, depending on your country.
Agree on both points.
We've returned plenty of stuff on ebay (mostly bad ram or hard drives). Sellers are super afraid to get negative feedback, so even the less reputable sellers have not had any issue letting me refund stuff.
I did look into the seller first, feedback for this specific product seems solid. As well, I tested the batteries and they hold exactly the charge they're supposed to. This seller packages up these batteries like a tank too.
Other than not really needing the product in the first place, no regrets on buying it lol.
Yeah it can be tricky. I wouldn't trust anything that claims over 2500mah capacity, based on buying cells that are both 2500mah and 3000mah, the 3000's had absolutely zero additional capacity. They would just get hotter while discharging, but be able to supply exactly the same amount of watts to your load.
As well, it's a case of "get what you pay for". I bought some cells that cost a bit more, 2500mah. Seemed like legit cells. Well balanced -- very very close capacity and voltages on each cell, even under heavy discharge, capacity exactly as rated. Then bought some other cells for a lot less -- sure they were "worth the money", because they were so cheap, but they are hardly living up to the advertisement. Easily 20% lower capacity, different cells having much different internal resistance, so they'll drop off dead at very different times from one another. Even then, if you have a good cell balancer and don't discharge at a huge rate, they could possibly work ok.
For my money I'd rather have the higher quality cells though.
This active cell balancer is pretty nifty: https://www.ebay.com/itm/174090326287?ViewItem=&item=174090326287
There are youtube videos on it -- it does what it sounds like, takes power from the overcharged cells and uses it to charge the undercharged cells. Much more useful than passive balancers which simply discharge the cells that are overcharged.
Cells that were "reasonably ok" but no higher capacity than 2500mah cells and just used the extra stored power to get hotter while discharging: https://www.ebay.com/itm/Samsung-30Q-INR18650-3000mAh-15A-Mod-High-Drain-Lithium-Battery-Cell-/223618131645?hash=item3410ade6bd
Looks like that seller doesn't have the 2500mah cells anymore. Too bad, they were about the same price, and quite good. If memory serves, tested right around 2400mah real capacity.
These were even worse -- clearly either used cells, or counterfeit. Maybe 2200mah real capacity, wildly differing internal resistance between cells. For the money, still an ok deal : https://www.ebay.com/itm/20pcs-18650-Li-ion-Battery-30Q-3000mAh-Flat-Top-High-Drain-Rechargeable/223460430116?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
As far as I can tell, from what I've read mostly, there are two major things to look for to determine legit cells.
1 -- Do the cells printing have "dots" in them? Labels on real samsung cells look like they've been printed on a dot matrix printer. Counterfeits rarely bother with this detail -- the label looks like normal text printing.
2 -- Is the deal too good to be true? Real cells are going to be something like 5 bucks each, maybe a bit more, not $2 - $3.
Oh, I guess also, anything claiming more than 3000 mah in that form factor is a scam.
Yeah, the seller feedback is much less important to sellers on Amazon. On ebay, it's front and center and they encourage you to leave feedback. Crappy sellers have a hard time continuing to sell on ebay.
On amazon, on the other hand, if a seller sends a counterfeit product, it normally ends up being a negative review against the product, not the seller. Bad sellers will attach themselves to highly rated products to sell fakes. It's extremely difficult to tell whether you'll get a good product or not -- there's no way to know which sellers a positive review was given for, or negative. So for an abused listing, you see some good reviews and some bad with no indication who sold the good or bad products.
On amazon, I try to avoid buying things from third parties, unless said third party designed / manufactured the product. Just tons of garbage on amazon.
Really love this sentiment:
#x# #fuckBezos
That said, I do have to say, Amazon makes it easy to return stuff. For some items they don't bother making you send them back, they just give you the money. So they don't just fuck the customer, they also fuck the seller. Everyone gets fucked. It's a real gangbang over there.
In any case, I buy tons of stuff from both amazon and ebay, so I would say on the whole my experience has been good with both. I just want to acknowledge what people have said about counterfeits being a problem on amazon. I would say yes, that is true. I haven't been hit by it as far as I know, that I can recall, but I've held off on buying plenty of stuff because, reading through the reviews, it was clear that some of the sellers were selling garbage and there was no way to know if you'd get the real product or not.
@AnthonySmith any luck with this? Do you have some kind of setup for welding packs together? I'm wondering what you're using and am thinking of some kind of homebrew setup with a gel cell. There are some youtube vids about how to build those.
Amazon reviews and feedbacks are cooked up compared to ebay. This may be Bezos himself cooked up, use open source softwares for cloud hosting without contributing a penny to open source development.
Ebay exited Indian business. I am a sad consumer due to ebay exit, even now Amazon or other players not able to bring Electronics components like we had in ebay.
My perceptions about China got changed, they are great makers with solid engineering skill, hard work. Original / clone is how one could perceive economy, rich/poor, morale, ethics and law, god, inner voice, self esteem, hassles, life time of product, serviceability, space etc factors. Thankfully Open Source exist for software market.
I know it's a repost from another place, some year back, but:
