Review / Test: Protected Trustfire 26650 5000 mAh Battery from Manafont

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.

1 amp discharge test with the battery protection removed.

4567 mAh

Unprotected at 3A?

I'm wondering about sag under 3A load without protection. Should be much better than protected.

Thats my next test as i would like to compare the curve and knee with and with out protection on the 3 amp discharge.

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.

Thanks again, benckie, fantastic review as always. I'm going to update the 26650 thread to make note of this performance.

Updated post #44 with a 5 amp discharge test.

But INR King Kong's little better hold voltage. ICR King Kong's hold voltage same as Trustfire.

These perform better then my king Kong's even with there protection circuit, but are slightly longer.

KK INR At 3A from 4,2V to 3,5V around 2400mAh.

At 5A 1800mAh

10A 800mAh.

KK ICR

3A 1700mAh

5A 1200mAh

Your TF test

3A 1300mAh

6,4A (4,15V-3,5V) under 100mAh.

TF have more capacity, but KK better hold voltage

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.

Hey Benchie, thanks for recommending these cells. They arrived today and work great in my Fancyfire HD-2010 and JM07 Pro White.

No problem Richie.

Date ordered: 04/23/12 Date dispatched: 04/24/12 Date received: 5/17/12

Cell voltage out of bag

Cell #1 3.90 volt

Cell #2 3.87 volt

Cell #3 3.82 volt

Charging now I'm going to charge them at 1.5 amp then discharge to 2.75 volt at 3 amp to mimic the test done on the opening post on this thread.

I can confirm again these do work in multi cell lights with out adding magnets or blobs of solder

Cell 1 first cycle discharged from 4.15 volt to 2.75 volt @ 3 amp.

4119 mAh

I did use the cell for a couple quick tail cap test before discharge, but it is still in the ball park with the king kongs discharged @ 3 amp.

Cell 2 first cycle discharged from 4.16 volt to 2.75 volt @ 3 amp.

4230 mAh

Cell 3 first cycle discharged from 4.16 volt to 2.75 volt @ 3 amp.

4133 mAh

I was expecting approx 100 to 200 more mAh from these batteries test, it is there first cycle they will pick up a little after a few more uses and they still are par with the king kongs discharged @ 3 amp. The protection seams to be working on all three cells.

I have one more cell coming ordered after the three i just tested when it gets here ill test it as well and post my results and i might randomly test one of these 3 cells again later to see if it picks up or if charged to 4.2 volt i can get a bit more mAh out of it.

I found this 3 x 26650 battery holder to be handy for storage and could be useful for a charging cradle or custom power supply for DIY projects. i like the fact they lock together.