Hi guys, today i found a guy who has about 300+ new factory packed unprotected panasonic CGR 18650 2250mAh cells…manufactured May 2011 and he is willing to sell them as a whole…(bought for some project that never took place) so how much will be good price? should i offer 2 $ per piece maybe…
CGR18650CG?
Those are IMR cells. I couldn’t begin to tell you the right price however.
Before buying 300+ cells personally I would have to test a couple randomly chosen samples.
Thats a lot of cells.
i took one for testing and in my nitecore tm11 (i know this shouldn’t be done…) i put 5mm spacer in order to make contact since this is unprotected cell and it worked on turbo without any problem and without becoming warm, usually protected cells cannot drive the tm11 on turbo if you put just one cell in it…
I’d test for capacity & internal resistance to be sure it matches what a genuine new panasonic CGR should have.
You just don’t want to get stuck with 300 counterfeit cells.
+1
Send a few to someone here with a hobby charger. It be close enough to tell if their genuine.
i will do some torture testing these days… these guys were working in a company that imported electric scooters, but in my country (Macedonia) those electric scooters are still not approved as “road legal” and i suppose they thought they will be needing this cells for who knows what, anyway they gave up and the cells are in boxes that are not opened and the samples i saw have absolutely no marks of soldering or conecting or any other mark that will indicate they were used…as for counterfeit…any ideas what should i look for?
A clear photo showing all the markings will be a good step # 1.
Let’s see if it can pass the BLF Board of Censors
… at 3s100p that is 12v at 225 amp hours….
in the end i think you are right…i will just get headaches…i guess all this “not shipping lithium…” recently has driven me to consider alternatives…just love the “old days” when you could buy few pieces of any kind you want for good price from fasttech…and one more thing: where i live most people really never heard of something like 18650, let alone the specific types of it…anyway, thanks guys, i will eventually post the test results…
The CG ones are not capable of really high discharges. The CH ones are.
CG are used in laptops, max. discharge is 2C, so about 4.5A. CH can handle 5C, thats about 10A.
Those cells are OK, but nothing spectacular. Your TM11 not getting warm is a sign of not much power flowing.
i guess i wrote it wrong: the battery is not getting hot but the tm11 head is warming as usual on turbo…