Do not put the 18650 lithium battery into the water, or use the battery in a humid environment; do not store the battery when the ambient temperature is higher than 65 C. I need to find my magnet\jumpers to apply 3.7V to each cell to see if they will charge up. Now, let'stake a closer look at the color difference between the cells. But voltage is only part of the story. However, it takes a small moment so I'll have a quick check. On a black background, it is easier to pick up some of the differences in tone. Now Ive just purchased 2 25r that are clearly fake. Whereas, the HG2, even though they have become more available are still relatively scarce and seeing shortages. Cell #2 has the most markings. Unwrapped cells are dangerous and easy to short-circuit. You quickly notice that its name refers to its size. So, to recap on how to identify a fake battery; Check the weight of the product. Very good article. Something mildly interesting about the Samsung 25R is that is has quality control markings right next to the vent, and most batteries do not. All I learned was this is getting out of control and so many ppl dont even know about the counterfits and black/grey market for this stuff has evolved to a level operated in darkness. These markingspresent on all sides of the steel. How to use 18650 batteries properly. Glad to bump onto your awesome site. How can you tell a fake 18650 battery? Or with other words: If you keep the current constant the power dissipation is proportional to the resistance. Here in the UK/Northern Ireland it is an absolute nightmare trying to get 18650 batterys. If the battery has a rating that matches it's actual capacity, any capacity or weight is valid. My Dewalt, Skill and Bosh drill batteries hold up very but then their great charging systems provide automatic balanced charging that I can always depend on. Even most battery chargers like the IMAX B6 will discharge down to 3.0v when testing batteries. I could try and clean them up but not worth the risk. (For high-level battery geeks out there: the reason the charts begin at about 3.4 volts is that our testing equipment doesnt sample quickly enough to capture the high-voltage discharge that occur immediately after testing begins.). A battery that can both be high-drain, and high-capacity is just what everyone wants. 3. Interesting the poster who doesnt think that anyone needs to waste the time to test for fakes as long as the price as right but still is willing to invest the time to criticize someone who invested the time to test. The cross through the circle designates a zero. These came from a distribution group here in Canada that touts themselves as 100% Authentic. Or is it something you built personally (i.e. A 20 amp, 3000 mAh milestone is, in some way a holy grail of stats. 1.) Reply How to Prolong the Life of an 18650 Battery We also have to spot-weld some tabs on the newly wrapped cells so we can attachalligator clips to them. Testing more 18650 Li-ion cells (REAL vs. FAKE) If you see a drop that needs some seconds to occure this is part of the electrochemical reaction. Thats just me though, Im sure your opinion may differ. I rarely see such effort given to provide this level of comprehensive, detailed, and un-biased information. Furthermore the HE2 is a couple years older than the HG2, and is readily available on the market. But I think that's really a stretch and likely one does not have any benefit over another. Iron, copper, nickle, magnesium, etc. Reply How ironic. Counterfeit 18650 Batteries - Spinfuel EMagazine Throw them in the bin? Sure enough, they also matched with capacity tests on an Opus charger. In fact, there are "empty" cells made that are not fake, they are simply sold as empty to fill a mechanical void for battery packs with odd numbers of cells, and are used to fill a space mechanically for the structure of tha pack, without unbalancing the individual strings of cells. Would you be willing to share the source of your Arduino discharge curve tracer? No more trying to solder/fail batteries. We are using a RePower battery charge and discharge station (AC 220 / 60V / 20amp) for these tests because itwill accurately show us adischarge of up to 20 amps - which the HG2 is rated for. As we all know, excessive heat is bad for 18650s. Ironically its the only one that charges to 2500mA and lasts the whole day. 5000mAh 18650 ?Seriously ?That's obviously fake. I checked all 4 batteries removed the shrink wrap everything checks out as per your information; except 2 batteries had 0 (zero with slash) on the bottom the other 2 batteries had a capital B and not 0 (zero with slash). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); How To Integrate Love For Electronics With Love ForBikes. . Please please make some more guides on fake spotting. It was being sold as a new VTC5 but is certainly not. Pictured above is a good viewing angle to check out your battery's vent. First, Cell #1s voltage rises MUCH more quickly than Cell #2. Buy from atrustedvendor. Why do I say this? bobby. I have taken countless Samsung 25R discharge tests. This is so we can now compare the color difference more accurately on a computer. Didn't see a reply so I decided to look. If you do, please send us a picture or a comment and I'll attach it to this blog post. This is the discharge curve from a Samsung 25R too, but notice the two small blips in voltage. Some flashlight makers rebrand all batteries they sell. It was once thought unlikely because of their availability. Don't try it at home! Buy Good 18650 Battery: Nitecore 3500mAh: https://www.banggood.com/custlink/GDGKBYWFzz Nitecore 2x Charger: https://www.banggood.com/custlink/Gvmv6RpF1p Nitecore 4x Charger: https://www.banggood.com/custlink/mDDK6YW57I LINK \u0026 Support - YouTube: https://www.youtube.com/c/Stefano91ste- Instagram: https://www.instagram.com/Stefano91ste- Pinterest: https://www.pinterest.it/Stefano91ste If you'd like to support the channel: Like, Subscribe, Comment and Share my Videos :) Do you want to Make a PCB?Look this: https://youtu.be/l8oUQpGAOCwWARNING: This video is only for demonstration. Can you identify the fake LG HG2 18650 Battery? There are no shortages for the HE2, and it is a highly liquid cell. For example,LG HG2: You may have never noticed, but each brand of 18650 has their own specific top-cap which is very difficult to counterfeit. There have been, for several months, a large number of HG2 batteries with no markings. 7 years ago. So let's get to it! if a manufacturer (say in China) is contracted by a brand-name supplier to make, say, 250,000 genuine batteries and accidentally forgets to stop production and so has another ten or twenty thousand branded, otherwise legit batteries, whats he going to do with them? One thing might not be completely right in the temperature section: Cell #2 was running at a lower voltage, and for less time. I completely agree that showing heating over capacity instead over time makes some distortions. Both Cell #1 and Cell #3 show the right amount of capacity, a bit above 2500mAh: this is what you would expect from a 3000mAh nominal cell at 20A discharge. Ive asked a battery wholesaler about the Manufacture Date Code JF4T. These batteries are authentic, Grade A, and yet hadno markings. Here is the weight of the second battery, with nearly no variation from the first it also checks out fine at less than than maximum 45.0g allowed. They promptly sent me the other 2 batteries. Im sure your info will be useful to others. You may have noticed the text is actually made up of small circles. Variations that are safe include slightly different hue for blue than picture (because of different lighting conditions), placement of any printed components (can be offset in both x and y planes). After the cells are unwrapped, there are clearly some differences: Cell #1 has absolutely no markings whatsoever. Pretty likely, given that it was purchased on Taobao in the middle of a global HG2 supply shortage! Cells #3 and #4 both have aesthetically identical markings, only slightlyvarying in alphanumeric value. Some genuine 18650 battery can weigh more than 50g. They mimic the look and size of a standard AA battery. All 4 of my Samsung 25R have 12 engraved on the negative terminal and H4 underneath the positive terminal. Cell #2 is a Chinese 18650 cell. Cell #2 took 13 minutes to fully discharge. This page is awesome. The incredible voltage sag suggests that Cell #2 is not rated for 20A discharge. Thisbattery came with a burn mark that must have been very hot to both scorch the steel and burn away the plastic washer. I hope you continue to publish these articles. High Contrast Braille Keypad With Indicator Lights, Trinteract: an Open-source 3D Input Device, Ventbot, a DIY Home HVAC Vent Booster: Warm Side Cool, Cool Side Warm, ESP32-Powered Tabletop Kinetic Sand Drawing Robot, https://xaeus.wordpress.com/2016/09/08/how-to-identify-18650-cell-capacity/. First I charge each battery up to 4.2V with this charger. I realized on bottom of my batteries that there seem toe a round discoloration which is slightly more inside than the wrapping. A spot welder seems really expensive though and I don't really need it for anything else. How to Know a Fake 18650 Battery: An average genuine 18650 batteries will weigh about 45g and no nothing less than 42g. This is bad news and indicative of a really old battery. Those will have slightly lower capacity. I then use this custom Arduino battery discharge with an 18650 adapter. Great post, the article is right on point, nice images on the blog. Color original ones are always deep in color, while the counterfeit ones are always bright. This battery should be recycled. The giveaway for me was the washer on cell #2, you can see its more recessed than the other cells towards the vent slots. I bought 6 batteries from supplier as per your recommended visual and weights ,everything is ok till I put in charger ,first charge burn second charge also burn !! This is the sensor lead that provides gate voltage to the internal MOSFET switch. Check this. Can you identify the fake LG HG2 18650 Battery? The font is different from your pictures. 5 Easy Ways to Spot a Counterfeit 18650 Battery. The cells are fake, and the equipment used to print are lower quality, hence the faded appearance. Why or why not? Is this an open source design thats floating around out there? There are a lot of fake labeled and fake 18650 batteries being manufactured in China these days. Counterfeit 18650 Lithium Ion batteries have been identified in some deaths, and a number of injuries and fires. In this black light test, no abnormalities were detected. I have been on the computer for hours trying to find out if it will be safe to use. All consumers were notified and we are currently working on sourcing AUTHENTIC HG2s. China's highest capacity for 18650 is 2600mAh as a rule of thumb. This is the MOSFET turn-on voltage and is used to protect the cell from discharge below that voltage. It turns out that it is difficult to center that small battery within the 18650 shell. Thanks in advance! Test of cheap Li-Ion 18650 cells - beware of fakes - DANYK.CZ Thats some dedication you have. Details at https://www.minds.com/newsfeed/1070072022416384000. Thanks A Bunch! What does INR battery mean? - Yoforia.com Therefore it is vitally important consumers and suppliers are able to tell the difference. Even "new" chips might be remanufactured pulls from scrap electronics, so the incoming QA team is there to keep suppliers honest. The LG HE2 washer is slightly browner, without a glossy finish, and is much more elastic and less brittle. Over the last several weeks wehave seen this style of markings on genuine cells. , only slightlyvarying in alphanumeric value. What do you think? Before today, I could have sworn this line was a serial number which would mean its unique for each individual unit. There are two ways for markings to be faded, washed out, and unclear. Try to notice the difference in color that Cell #2 exhibits in this shot. If your new batteries show any of these signs of wear and tear you have likely purchased used batteries. Large amount of bottom scratches. Regardless of the comedic aspects of it all, knowing how much effort it took to both do the testing and write up the results, I say I cant thank you enough Here, here!. It doesnt guarantee by any means that the cell has retained all of this or even any of this energy.
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