We finally have our new 3100mAh 18650 batteries for sale! These cells are based on the Panasonic 3100 cell. After testing these batteries we have found them to be the best performing cells on the market. Their capacity is the best we have ever tested. Their 5A discharge rates are amazing. As of right now we have 100 protected and 100 unprotected batteries in stock. I don't think they will last long. EDIT..... we really want to get some people to try these out so we are dropping the price to $13.95-$14.95! EDIT..... Shipping is a flat $6 in the USA, sorry no international sales just yet. You can buy them on our website at. These have a low profile button top to keep them short-er.
Edit... We also have the new Panasonic IMR 2250mah battery. Not only are these the highest capacity IMR battery they are the first non China made IMR I am aware of.
Orders are normally shipped in 2-3 days via the US Post Office. Tracking information will be sent when the postage is printed. Check your junk mail if you don't get tracking info.
We are a real company and have been doing internet sales for over 10 years. If you look at our website at Callieskustoms.com you will find we Sell T-shirts and auto parts, basically we have taken our niche market hobbies and branched into our business. This is one further extension of my flashlight hobby
I'm waiting for the first review. My few experiences with cells that say they are over 2600mAh, is that they aren't. Hope I'm wrong, but so far that has not been the case.
If they are XXXXXfire and they claim north of 2600 you are right, but the Panasonic based AW 2900 I have are all over 2800 mAh @ 0.5A (discharging to 2.5v). Obviously I expect these should outpeform the 2900s.
What does "based on the Panasonic 3100 cell" mean?"
This means Panasonic does not add protection circuits to batteries. They are sent to a third party assembler who adds the protection circuit, top terminal or tabs, they put a wraper over them and add your brand of sticker to them. In our case, my wife is a graphics designer and we had our own stickers made up rather than use theirs foil labels. So if you decide to cut one open yes you will find a Panasonic battery.
I just did YET ANOTHER discharge test at 1A= 2928mAh @ 70f 2.5v cutoff If I was selling fakes I would not be sending these batteries to people who are known to post reviews and in fact encouraging them to do so.
Be-seen, we are actually in the big city of Cornelius Oregon. Between Hillsboro and Forest Grove. My in-laws have a vacation house in Goldendale Washington. Thats where I wish I was right now rather than working
Hi, folks. I am very interested in this cell, and am contemplating purchasing the unprotected version, as I use quality chargers and lights with low-voltage cutoff.
A question: my lights go to low at around 3.0 volts, and cut off at 2.8 volts. How much of the battery's capacity will I be forgoing if I run the cell from 4.20 at the top end to 3.0 volts at the bottom? Or, to state it the other way, how much capacity will I see from 4.20 volts to 3.0 volts?
The capacity of the 3100 panasonic cells from 4.2v to 3v at 1amp is around 2800-2850mah according to panasonic. Don has measured 2775 and 2735 to 3v on the first cycle of my version of these cells. The capacity can be increased at higher current draws and higher temperatures during measurement, I would also expect capacity to slightly increase after a couple of charge cycles. There is also of course extra capacity from 3v down to 2.5v.
Remember, the other high capacity li-ions by AW an Redilast (2900s) are also measured down to 2.5v so even if you don't see full capacity with these you will see the the same proportion of the rated capacity as with those too, so still more.
The numbers have been slightly edited upon re-examination of the Panasonic data-sheet, as it is a discharge curve so the numbers are an approximation by me.
Arrived yesterday, thanks! No time for testing yet, but resting voltage is at 3.9 a tad high but no real problem. Anyone done a 10A discharge on these yet? I am very curious how they will hold up compared to AW IMR 18650 for an SST90 build. Not sure if my iCharger 106B+ will even handle that kind of load without an external resistor (and I haven't figured out how to do that yet either.)
I try very hard to be honest, but sometimes I don't have the equipment to do the best tests possible.
Beyond 1A discharge my tests aren't reliable - as in not one of my chargers can give reliable results past 1A. Can run a datalogging meter on current past that on the rare occasions I boot the only box running Windows around here. Last booted it in March.
But integration is not one of my skills. I last had to solve multi-variable differential equations in 1982. And have exactly no wish to remember how to do it 30 years later.
