6 amp discharge test from 4.18 volt to 3 volt (protected version)
Cell A
Cell B
I did not bother taking a picture of cell B but you get the idea, Cell A tripped the protection @ 3.39 amps and Cell B tripped the protection @ 3.11 amps. Cell B was the cell that was tripping early is the discharge test's with its low voltage protection kicking in.
I have removed the wrapper,s on the cells, they are well wrapped, nice and thick
With the (IC's) PCB's removed from each cell i noticed the PCB's only have one mosfet this would explane not being able to draw high currents from the batteries, the protection kicking in early and them not handling high charge rates, a good battery capible of a constant 3 amp discharge needs atlest 2 mosfets and cell capible of 6 amp dishcarge you would expect to have three, my trustfire flames have 2 mosfet,s and some of the ultrafire batteries ive pulled apart have one.
I would expect the cell,s will perform better and give a slightly higher current tail cap readings as i have noticed this with other cells with the protection circuts removed, i belive the internal resistance test will improve with the (IC's) PCB's removed, but the unprotected,s might not work in all flash lights due to the small button top on the positive side of the cells and the protected versions are pritty long and fat.
Cell A discharged from 4.18 volt to 3 volt @ 3 amps (Internal resistance 103 milliohms)
Cell B discharged from 4.18 volt to 3 volt @ 3 amps (Internal resistance 98 milliohms)
That is much better double my first discharge test,s, what i was expecting around abouts with the first 3 amp discharge test, people dont buy the protected version as that was really disapointing.
Normally in the last four battery test i only discharge twice and recharge once, but these cell,s ive been testing on this post now have been discharged and charged around 5 or 6 times now, if i had done this amount of charging and discharging on my other battery test's might of got higher readings.
Im only going to test down to 3 volts as while not every one will agree with this, i feel thats the most usible voltage range in my opinion and most of the lights i have brought (12) but most dim and loose light to me around 3 volt under load or go into some form of low voltage mode include my multi cell lights and becuase i have tested all other batteries down to 3 volt during my testing so ill try and keep it even.
A bit of a recap with other cells ive tested to compare the mAh with 3 amp discharging to 3 volt.
Trustfire flame 2400 mAh battery test 2041 mAh average. Minimal battery voltage the cell can go is 2.75 volt.
Hi-max 2600 mAh battery test 2301 mAh average. Minimal battery voltage the cell can go is 2.75 volt ?.
Solarforce 2400 mAh battery test 2096 mAh average. Minimal battery voltage the cell can go is 2.5 volt.
Redilast 2600 mAh battery test 2401 mAh average. Minimal battery voltage the cell can go is 2.75 volt.
NCR18650A 3100 mAh battery test 2485 mAh average. Minimal battery voltage the cell can go is 2.5 volt (with no battery protection).
Tail Cap Current Draw Comparisons
Test 1 Ultrafire Cree T6 3-Mode Memory LED Drop-in Module
solarforce 2400 mAh (A) 1.67 amps
solarforce 2400 mAh (B) 1.67 amps
Ultrafire (grey) 2400 mAh (A) 1.23 amps (from buyincoins they only take 900 mAh)
Ultrafire (grey) 2400 mAh (B) 0.7 amps (from buyincoins they only take 900 mAh)
Trustfire Flames 2400 mAh (A) 1.51 amps
Trustfire Flames 2400 mAh (B) 1.50 amps
Redilast 2600 mAh (A) 1.70 amps
Redilast 2600 mAh (B) 1.71 amps
Hi-max 2600 mAh (A) 1.44 amps
Hi-max 2600 mAh (B) 1.45 amps
Panasonic NCR18650A (A) 1.69 amps
Panasonic NCR18650A (A) 1.72 amps
Test 2 TrustFire TR-3T6 Triple XM-L T6 5-Modes Memory LED Flashlight (3x18650)
tested with 2 x 18650,s
solarforce 2400 mAh 2.46 amps
Trustfire Flames 2400 mAh 2.51 amps
Ultrafire (grey) 2400 mAh 0.00 amps as they just tripped on high.
Redilast 2600 mAh 2.5 amps
Hi-max 2600 mAh 2.51 amps
Panasonic NCR18650A 2.38 amps
Test 3 TR-1200
tested with 2 x 18650,s
solarforce 2400 mAh 1.66 amps
Trustfire Flames 2400 mAh 1.72 amps
Ultrafire (grey) 2400 mAh (A) 0.00 amps as they just tripped on high
Redilast 2600 mAh 1.74 amps
Hi-max 2600 mAh 1.81 amps
Panasonic NCR18650A 1.61 amps
Previous battery tests
My sugestion is, dont buy these Panasonic NCR18650A 3100 mAh in protected form untill more testing has been done, trustfire flames to me are the best bag for back and if you want some thing with well matched with low internal resistance and good protection spend a bit more on the redilast 2600 i feel they have the most usible voltage IMO or if you want some thing middle of the price range go Hi-max.
I would like to thank Hank from intl-outdoor.com for the good fast communication the full refund, i belive the seller and the cells are genuine, just a a pitty about (IC's) PCB's on my cells, maybe i was just unlucky but it would be good if more users could do discharge test,s above 1 amp.