I believe this is a genuine trustfire cell, all genuine trustfire lights and batteries i have brought have a TR description or part number on the driver or PCB.
The protection circuit has 2 mosefts witch is good, cheap or knock off clone batteries have one and can not handle 3 amp current draw, i have brought clone trustfire flame 18650,s from DX, ebay with one mosfet that trip under load.
The cell has nothing printed on it no markings or labels what so ever on it.
I have 3 more coming i will test them when they get here to get a broader range of information on these and to see if they all test similar to each other.
Wow. It will be good to see confirmation of capacity when you get the 3 additional cells from Manafont. Now if we can just count on them consistently selling these same ones in the future....
If they stay like the trustfire flame 2400 mAh 18650,s ive brought and tested (around 18 or so now just from manafont over the last 9 to 10 months) as they are all around 2400 to 2500 mAh give or take, ill be happy.
3 amp discharge test with the protection PCB removed.
4.14 volt to 2.5 volt.
4517 mAh
5 amp discharge test with the protection PCB removed.
4.17 volt to 2.5 volt.
4533 mAh
There is little gain in discharging from 2.75 to 2.5 volt (47 mAh). So i conclude the Maxim discharge for this cell is 2.75 volt.
Unlike other cheap cells Ive tested with the PCB protection removed there is normally more of a gain in mAh, there is basically only a slight gain in mAh with the protection PCB removed and the graphs are basically the same, so i conclude the protection on this cell works well and is efficient for a cheap cell.
Ive also noted there is little to no loss in mAh between charging at 1 amp to 1.5 amps on this cell. I conclude this cell is 100% genuine and for the price VS mAh with the added bonus of the built in PCB protection circuit, i give it the thumb,s up.
It tested better then any other protected 26650 cell Ive seen sofar and better then some other unprotected cell's and matched the king kong's in 1 amp discharge and tested higher then the king kong's in the 3 amp discharge test and the 5 amp discharge test.
If you going from the graph's along you need to take a few things into account.
I used square graphs with smaller spacing for the voltage and mAh so this will show more of a curve and less of a knee to mitro's graphs IMHO.
Mitro use larger spacing in the voltage and mAh and a rectangle graph this will show less of a curve and more of a knee in the graph's then mine IMHO.
I own king kong's ICR's and have ran my own testing, i never posted my results as there has been a lot of testing on these cells and a lot of data already posted, i can say this trustfire performs the same or better between 1 to 5 amps discharging with voltage and mAh.
Also the protection Ad's length and it will drain some power out of the cell while discharging. But at the end of the day the battery with the most capacity (mAh) will give the most run time.
To me these protected trusfire 26650 cells are awesome the test speak for them selfs, the protection worked and they can be used in series with out adding magnets, great for cheap cell IMHO
As I've already said in this post I have 3 more coming and last night I ordered 1 more for a friend that is getting sent to me to test before handing it over. So including the cell I've already tested I'll be able to test 5 cell's in total giving a good basis of cell performance from the cells ordered at different times from the same seller. I'll post my results with order and received dates as they get here. Testing 5 cells should give us a good broad test, much better then testing one or two cells.