Hey guys! A few viewers just informed me that the cells from Amazon I purchased not too long ago, have now become compromised! Sad, but it happens frequently. Once the seller receives recognition, they start playing games to make more money per sale, but only end up screwing themselves over time. As for the Aliexpress cells, the price for what you're getting really isn't a bad deal. Thanks for watching!
Yea man... They could sell them as 2500 mah cells, but they'd rather deceive on the capacities, still using Panasonic's name. Great job. I buy my Panasonic 18650s from Littokala on AE.
@@electronicsNmore Definitely bait and switch. These vendors at first start selling new genuine brands and when they get a good rating with customers change to a lesser capacity cell or quality, while at the same time charging the same. I got a better deal, a 4 pack Sony VTC6 18650 3000 MAH 20 AMP discharge rate batteries for free, a few months back. I guess Amazon wanted to clear themselves off any liability, I was refunded the purchase price.
Never buy anything with lithium in the name on eBay. And only buy batteries made by Sony, LG, Samsung, or Panasonic/Sanyo. I'm fortunate enough to live right next to Orbtronic, so I can get genuine batteries, for cheap, very fast.
I've found that you can get fresh/new/genuine Samsung INR18650-25R cells relatively cheap by tearing down the power tool 20V battery packs sold at Walmart Hyper Tough brand or Harbor Freight Hercules brand. The trick is to find them on clearance, or even for free as returns discarded in the recycling station. Sometimes they get discarded because the battery management circuit in the pack will refuse to operate if there's one bad cell or other minor fault. You're quite right that counterfeits from our friends at 116 deg E longitude are most of what's offered for sale (Gresham's Law).
On eBay and amazon for that matter, you can even buy the PVC wrapping that is a carbon copy of those cells, to enable anyone rewrapping crap/used cells to look like those NCR18650's Honestly you could buy much better cells for around 5 bucks these days. Samsung 35E is higher capacity and higher current rating. Samsung 30Q is good for higher current applications. Samsung 25Q is a bit cheaper in bulk. Sanyo also makes a 3500mAH 10A cell that is around $5. I have even seen some 20A and 30A cells but the capacity is generally lower, around 2000 to 2500mAH
Appears you're 100% correct about Amazon for the 18650's! The cells I bought a while back, are now compromised. Sad. Even though the company lied about the 3400mAh capacity on Aliexpress, they're still a good deal for the $3.80/ea I paid. Thanks for watching!
@@electronicsNmore I have over 1000 2000mAH 6A rated batteries, I got them for free, still in the original packaging, they are 2008 vintage! They aren't worth much but capacity doesn't matter when you have so many of them :D And I'm going to pick up either some 30Q's or those Sanyo cells for my cameradrone, I might be able to get 30 minute flight times!
Testing for capacity alone isn't going to tell you much. To confirm they are genuine cells (or at least equal cells) you need to load test the cells at 0.2C, 1C, and the max discharge rate. Then compare your results to Mooch/HKJ/Datasheet. What's not important is the capacity, its the initial voltage drop and where the voltage is when X amount of energy has been pulled from the cell. New cells line up VERY well with each other as you'll see Mooch and HKJ often have 2 cells on their graphs but you can rarely tell because the lines are on top of each other. If you have the ability to graph the data it makes your work a little easier. Along with voltage drop at high loads you also want to track temperature or at least have a measurement of temp at the end of the discharge. Temp should be spot on to the results from Mooch/HKJ/Datasheet. Part of the voltage drop measurement is calculating DC IR but since most datasheets use AC Impedance you'll need a YR-1035 or RC3563. Again, another number that will weed out the bad fakes instantly since it is quite common for sellers to pass off cells with a similar capacity but a much lower max discharge rate and therefor higher impedance. That's where the money is. Cheap low discharge cells sold at high discharge cell prices If all of that lines up then you have a genuine cell or a good copy with identical specs. Also, the weight on the datasheet is often a max figure. Generally I've seen most cells are about 1 gram lower than that max number. I would be suspicious of a cell more than 2 grams lower.
Thanks for the video, can't find the ones you gave screen shot. Most shipping is from $10 to $20 dollars for the Panasonic NCR18650B battery's, but thanks for the help and good work.
Check link now with info added below it. I do not receive any commission from the sale of the Aliexpress 18650 cells shown in this video, but I do get commission from other things you may buy. Thanks for watching!
Thank you for your empirical demonstration of "Caveat Emptor," (Let the buyer beware). Knowing what NOT to buy is just as important as knowing who the good guys are.
As usual thanks. Sometimes I just put a power adapter instead of a battery on some devices. More hassle to keep changing batteries and batteries cost more in electricity than direct power. I still prefer wired USB keyboard and mouse as well since batteries eventually fail at the wrong time. LOL
Take a look at recent comments in the amazon link. Did they pull a bait and switch to lower quality copies? Also possible people are confused and reporting only the amount charged to top them off when it was already supplied half full from supplier. Hard to be sure unless people clarify their results come from the *discharge cycle*. I usually order from a high positive feedback ebay seller. They are putting their feedback reputation on the line if they don't ship good stuff, and the good ones won't risk it without testing first.
I just saw that, it's disgraceful! I'm going to add a notation under the Amazon link to the 18650's because they switched out the cells. Sad they did that. Lithium ion cells are typically received with 50% charge. Thanks for watching!
Excellent video!! As for weight, they often add sand to make up weight differences. So while low weight is a definite red flag, proper weight doesn't mean much in and of itself. In addition to capacity, I think the overall cell quality is an important factor; e.g., quality control in construction so as to minimize the potential for catastrophic short-circuit failures during the lifespan of the cell resulting in possible can rupture and fire. I have a high degree of confidence in genuine Panasonic NCR 18650B cells based upon their track record and manufacturer reputation. So even though the faked ones you tested do have 2500 mAh capacity, who the heck knows what kind of build quality they might have. And I feel the risk can be considerable. Worth it to pay more and get the real deal. Thanks for another excellent video!
The most recent "Customer questions & answers" and customer reviews at your Amazon link seems to show that that group of cells has been compromised by garbage, too.
Disgraceful. I just added a notation in the video description area making buyers aware. So many of these sellers play games once they gain recognition for the products they're selling! Thanks for the info, and thanks for watching!
@5:32 damn straight! most the ebay ones I find are 1.1 to 1.2 Ahr, but those 2 dollar ebay specials are perfect for those 5 dollar ebay skywolf torches .. Great vid as always thanks.
Hi Doug. Sorry for my late Comment. Has always I Liked,shared. Hope you had a " Very Merry Christmas and a Happy New Year ". Has always I Liked,shared. All my very best.
Can someone tell me what's the amperage of this particular battery? I'm not talking about the mAh, I mean the amperage in A, this is essential info for vapers.
I recently got scammed by some manufacturers on Amazon; 3000 mah batteries- tested out at 1500 mah. 3400's testing out at 1700.. heck, I'd take those 2500's if they were honest about it.
The over statement of battery capacity is so ridiculous........ Panasonic has the best and should sell direct so you know what you're getting. It's worth a bit more money to get the real deal. Thanks for the video!!!!!!
@@ericklein5097 Liitokala its the original brand. If you got Liito Kala then you got a fake. Best brand in the world currently,beats Samsung,Sony ,Tesla and the rest ,because only the chineze have doped LIFePO4 bateries and Liitokala sells them. My drones fly on high discharge Liitokala li ion regular batteries, but that have the higgest discharge rate in the world( means they can be drained fast).Only Sony comes closer to high discharge Liitokala but still,lii is 25% more high discharge than Sony.The rest of the brands have half the discharge rate of liitokala.
@@mihaiilie8808 what are you smoking? Only the Chinese have doped cells? With what? Because what I think you're talking about is the Nanophosphate technology that was developed by MIT and Sandia Labs in the USA. Or maybe your're talking about LMFP? Whatever you're saying makes no sense. CATL, EVE, BYD and a few others do make great cells. Its obvious why. They have a massive population with a huge market for cheap shitty deathtrap EV's. You don't have a single Liito Kala cell that can match a Molicel P45B, I absolutely guarantee that. Liito Kala lies about their discharge rate quite often. So go ahead and prove it. Upload a video of you discharging a Liito Kala cell beyond 50A WHILE THE VOLTAGE STAYS OVER 3.60V for the first couple seconds. If the voltage falls below that, the cell is not rated for that kind of discharge. Or actually continue discharging it and let me know what the temp is at the end of the discharge. Want me to upload a video of a P42A being discharged at 40A? If I had a P26A I'd gladly discharge that at 35A for you .
I just checked one of my ncr18650A cells, they have two codes stamped on them, Panasonic and LG are my favorite, I guess because some of my 2600 Lg cells test to 2900mah, when the Samsung çells were 22xx -24xx mah, for 2600 mah cells, the LG 2200 cells some were 24xx mah, the LG cells seem to last longer, shelf wise, most are 25xx mah, to 2905 mah, for 2600mah rated and the 2200rated are 2190-24xx mah, I didn't use any 2200 that were under 2190's,,, I hope it all works well, I'm using it to power my house off grid, I also have six new 120 ah LG power wall batteries, (made from power wall cells) each 7s 120ah and new, from damaged battery packs, the cells were untouched, it's taken years to gather, and work to get to this point, I can not pay $600-$1000 for a 100ah. 12v life battery! That's insane prices, you can buy 8, 280 ah cells for that or less +/-, maybe I will replace mine in a few years with LiFePo, possible 8s 10p from 280ah cells, LiFePo chemistry is improving and getting cheaper, especially with Tesla using it in Asia, there is a company making 1000ah cells!! With 1c discharge/charge, that's crazy, (I want 16 of them!!) 2k ah will run my house nicely! I think I'll stay 24v for now, if I get another inverter I may go to 48v, less charge controllers, smaller cables, all the way from the PV, my latest panes are running 72vmp, to charge a 29v battery, I try to keep it above 24v, but sorry I'm rambling! It's not really afgirdable to build such large packs from 18650's using new cells, using slightly used, or new old stock, from unused packs, is the most affordable, $1/cell +/-, I have upto $1.50 per, and as little as 0.50 per cell, and all used are 2200+ mah! Sorry for rambling, and welcome to 2021!
Actually these are much more likely new, but just lower capacity due to lower technology. One fake shrink wrap changes a 40 cent battery into a $3 battery. Way worth it to the scammers.
Panasonic, LG and Samsung is the best liion battery avalible, I have two 24v packs 250 & 280 ah from LG and Samsung çells, I recently got some Panasonic cells like these, and the ncr18650A, new old stock, and a few cgr18650ch high current cells, to replace drill battery cells, the only cc testing I'm capable is a 1/2amp load, so higher capacity Cells take forever! Especially my 1400cell packs, but I'm only getting started, possibly I will build atleast two more 7s 100p packs, 90% of my cells are as rated or better, I only use 95% plus cells, to maintain quality, the Panasonic cells are beautiful naked, shame they need sleeving!
I like these batteryhookup.com/products/100-brand-new-lifep04-32650-3-2v-6000mah-cells imho if you are evaluating for value $/Wh would be more relevant but there are many more variables then just cost and watt hours that can effect the suitability of a piece, battery for a project good example are all the videos of those low cost spot welders, the ones that have the unit failing have a battery that isn't suitable for the circuit and there is that capacitor mod that helps correct that problem
Not a bad deal, but you're better off using what I show in my other video below. (4) cells at the link you provided are $28 shipped, the cells I tested can withstand higher discharge rates, and you get the same capacity for less. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uyAtkGaO0hA.html
