I ordered these batteries from gear best. My package is lost, it’s stuck in Chicago customs for 2 weeks now. I thought gearbest would have a reasonable reship policy with the insurance purchase. I should have listened to others on here who warned me about gear best. They want me to wait three months for a reship with the insurance. Even if I ever receive these cells I’ll just pay more money and never use gear best again. Most companies it’s a month or 60 days. But 90 days from shipped for a reship is ridiculous to me. I’d have no issue with 60 days. But either way I’d rather pay twice the money for cells then give them business ever again
This is the reason I buy from my own nation (U.S.) supplier almost all the time; I do,however, have the same battery purchased from
Gear Best.
My first choices in the U.S. are: Mountain Electronics, Llion Wholesale, and Illumination Supply.
My budget first eliminates aggravation which sometimes is difficult to put on a monetary value. 
Lost =/= stuck in customs
Of course they’re not resend, just relax and see what custom does.
I think they were labeled “charger” with me and the two from AliExpress had a sticker “does not conform with EU blablabla” yet they arrived 
I’ve had orders stuck in SHI*CAGO for 2 weeks before. Happened twice. But they came through eventually. Hopefully, yours are not lost.
This crap only happens when coming through SHI*CAGO !
Never a problem entering country elsewhere.
I HATE when packages come through you know where. ^
You have better luck then me anything I’ve had sit in customs for two weeks never arrived it’s happened 5-6 times over the past several years. I just don’t see the point of insurance if they make you wait three months for it. I buy batteries from Richard before and from imr batteries. But even imr is so so. They left some thing out my order never responded to my email and deleted my review off their site. I normally make unwrapping video but with a American based company didn’t think it was necessary. Granted it was a .50 item it’s was more of the principle of ignoring my emails. I think my days with gear best are going to be over for awhile. They just had the cheapest batteries, but there policy is ridiculous to me. 60 days should be plenty for a reship. Hell I use to be a Marine/powerlifter and everyone knows what it takes to become successfull at that. And gear sources will reship after a month or if seized by customs. It’s ashamed that hormone suppliers have better business practices then a legit tax paying company. That has insurance on the parcel. Maybe fastech or bangood will provide better service. I’m not even upset it’s not here yet or its stuck in customs shit happens. I’m mad that they want me to wait 4 months for my batteries. I guess I’ll just buy some more unprotected evvas from Richard I was happy with those. Imr has the awt 5200mah batteries as well Idk rant over
Yeh, forgot to mention it was my order of LiitoKala 26650’s that were stuck in Shi*cago. Just got them a week ago after that 2 week delay.
I’ll post if it changes, but as you Chicago customs has given me hell as well. New York customs is breeze slides right through every time. Chicago intercepts the most drug packages out of the all the customs around 13% New York customs gets less then 3% los Angeles gets about 5%. Even the guys on the steroid forums hate Chicago customs they are almost guaranteed to grab your human growth hormone every time. That’s stuff is the real fountain of youth. Wrinkles literally melt away. Hgh is why kids heal so quickly. Anti aging clinics use hgh and testosterone to reset the clock Customs is help less all they can do is send a letter. I’m still amazed that drug dealers will reship in a month of no package international. Or will reship with proof of seizure letter. But a legitimate company that doesn’t have to eat the cost out their pocket because of insurance. Has a 3 month wait time. Hopefully in time I’ll have some good news to post
And 5 and 6 are done
5408mAh 10mR
5403mAh 10mR
Combined with:
5355mAh 10mR
5450mAh 10mR
(Ali Express ones)
5428mAh 11mR
5401mAh 12mR
I am happy with them!
Nice caps on those cells! can't wait to get mine. But I'm more interested in the HGH - pm me where to buy!
Gearbest 4 for little over $22 incl shipping.
Just got my LiitoKala 26650 from Gearbest and did a 5A discharge test. Here is the discharge curve of the LiitoKala compared with a purple Efest 4200mAh I got from MTN in March. Discharge was done through a 300W Turnigy Reaktor hobby charger and the voltage right at the cell contacts was recorded using a Junsi Powerlogger 6s.
Edit: added pictures
The internal resistances of these two cells are very close based on tailcap measurements in my 3V XHP-70 light and the voltage right after discharge starts in the curves above.
The Efest curve has the distinctive hump around 2000mAh that is very similar to the Vappower 4200mAh cell tested by HJK. This higher voltage hump is nice since it results in increased performance in direct drive setups when the cell is partially charged. Indeed, the Efest curve looks identical to the Vappower curve except it is about 0.2V lower, which could be a result of the age of the cell increasing the IR.
Hello!
Interesting information, EasyB 
. For some reason the whole graphs are at least somewhat below where I'd expect them to be for 20ish mΩ batteries (barely above 0'1V of drop at 5A).
Well, now that I may continue a bit with this crazy hobbie in a near future, this leads me to invest in further optimizations for my shabby flashlight XHP70 conversion; seeing graphs like that makes me think it may be a hard task keeping the voltage above 7'1-7'2V at the driver's input even before 50% depth of discharge. 
Peace & love,
Salvador
I did a crude measurement of the efest 26650 IR a while ago by discharging at 1A, recording the voltage, then increasing the current to something like 8 or 10A, and quickly recording the voltage again. Then the DC IR is delta(V)/delta(I). I estimated 35mOhms. This is really the value of IR we care about, rather than the AC IR that chargers usually measure (I think).
Using this procedure for HKJs data for the vappower cell, I get 31mOhms. He lists the calculated IR as 50mOhms for this cell, so I’m not sure how he calculates it.
http://lygte-info.dk/info/Batteries2012Info%20UK.html
Based on this it looks like he calculates the IR from the protection tests, in which the current is ramped up to see when the protection (if present) kicks in. He basically calculates the slope of the curve between two data points. This is a fine way to calculate the IR. However, if the cell is allowed to discharge for a significant amount of time at each current, it is possible to overestimate the IR. The voltage drops as a result of the increased current (this is the voltage drop we are interested in), but it also drops as a result of the battery being depleted. So if the test is not done quickly, the voltage drop from the battery being depleted is included in the calculation and the IR is overestimated. Based on how much the voltage drops with each successive current ramp, it looks like a significant portion of the cell capacity is used during each current ramp, so I suspect the IR is being overestimated due to this reason. This phenomenon would also cause overestimation of the IR by different amounts for different capacity cells and cells with very different shaped discharge curves.
I bought some at here and seems very good quality
Got in my GearBest battery order: 4 LK's, 4 SONY VTC5's, and 2 GA's - total of $47 is simply outstanding. Could have spent that on the VTC5's alone from some other sources.
I did a capacity test on my Opus of 2 of the LK's (LiitoKala) and got:
- 5420 mAh
- 5428 mAh
So seems right in line with what others are getting/have posted. Quick test in my FET+1 (ATtiny25/SIR800DP/dedomed XM-L2 U4 1C) based Convoy L2, and got the following measured at the tail on a clamp meter:
- LK @4.22v: 5.43A
- BASEN @4.22v: 5.42A
So for internal resistance, seems right in line with the BASEN cells, and also the EFEST 4200's I've measured in the past on the L2. This a somewhat limited test though without testing actual lumens output over time, comparing the cells, so not sure how much it's worth.
Bottom line is having a 5000+ mAh cell with performance at, or around, the best performance on any cell available is pretty amazing. I'll be ordering more...
Thanks Mitko!!
Edit: Has anyone confirmed these sold at FT under the Soshine brand name are the same thing? https://www.fasttech.com/product/3486100
They sure look exactly the same, accept for the cheap name brand printing...
100% same resource
100% same resource
Hmm.
My Opus 2.2 is showing 54 and 50 on the IR quick test with 5130mAh and 5205mAh on the two LiitoKala cells I acquired.
As if I were to trust those cheap electronic devices with regards to precise DC internal resistante readings… :person_facepalming:
Get a decent multimeter capable of at least reading to mV, and a load with precisely known sufficiently low ohmic resistance to induce a noticeable reading delta on the meter. Do your math then (promediating both initial and final no-load voltage readings in order to dismiss any potential inherent variation in it due to the own discharge process).
Cheers :partying_face: