GTL 18650 Battery Test [ Updated ]

[old4570]

GTL 18650 Test



Well , some of you may have noticed the GTL 18650 have hit Ebay . Some may not ! Anyhow , for a while now I have wanted to test them to see just how they perform .

Anyways , these are not protected , and in single cell use , thats just fine with me .

Dimensions .
Lenth = 65.8mm
Dia = 18mm

Discharge Capability :

SSC P7 MTE = 2.9A for the first one and 2.96A for the second one
More unprotected battery results soon .
Generic 18650 = 3A
GTL [ 2nd Try ] = 3A and 3.08A
Ultrafire Green = 2.8A
Trustfire = 2.78A
And just for the heck of it , a freshly charged IMR 18650 = 3.3A
All batteries were tested freshly of the charger .


Next Solarforce L2 R2 = 1.6A and 1.62A for the GTL
Ulatrafire Green = 1.58A
Generic 18650 = 1.57A
Trustfire = 1.57A

Ive just started testing so more to come .
I will do a runtime test tomorrow .

GTL is in yellow .. Graph was from my Xtar test , I just added the GTL result .

Wow , as can be seen , the batteries really pump for 25 minutes and then fall flat on there face , as they would say on Mythbusters , BUSTED !!! No way 2800mAh !!
You would be lucky to get 1600mAh , Nice output for a little while ...
Possibly re-badged/labeled 1400 to 1600 capacity batteries / the word Fraud comes to mind , shonky , and a few other choice words come to mind . WORD ! you been told !
Some one had to be the bunny , and I took a bullet for CPF members .
Some one in HK is chewing on my *** after taking a bite out of it !:thumbsdow

 

[T0RN4D0]

Re: GTL 18650 Battery Test

You have anything that can measure its capacity properly? The 18650 usually are properly market, lets see whats up with this one

 

[old4570]

Re: GTL 18650 Battery Test

You have anything that can measure its capacity properly? The 18650 usually are properly market, lets see whats up with this one

No Hobby Charger Here !
I do a run test .

 

[alfreddajero]

Re: GTL 18650 Battery Test

I have never heard of that brand before....is there more info that you can post for people like me that are not familiar with GTL.

 

[old4570]

Re: GTL 18650 Battery Test

I have never heard of that brand before....is there more info that you can post for people like me that are not familiar with GTL.

There sold on ebay , at the very top of the page is a link .

or just search GTL 18650 on ebay etc .

About to start the run time test .

 

[old4570]

Spend your money somewhere else !

 

[alfreddajero]

Thanks for letting us know how it went.....and thanks for taking one for us, at least we know to stay away from that brand.

 

[kramer5150]

Informative as always. Thanks for taking one for the team!!

 

[Black Rose]

Some one had to be the bunny , and I took a bullet for CPF members .
Some one in HK is chewing on my *** after taking a bite out of it !:thumbsdow

I hope you waited until after you did your tests to leave feedback.

 

[old4570]

Yeah ! :thumbsup:

These must be the worst of the worst when it comes to capacity , why on earth would they claim 2800mAh when they would be struggling for 1600mAh , and why put a nice label on rubbish , bit like dressing up a turd and passing it of as chocolate . [ I guess that would be the point ]

 

[HKJ]

Re: GTL 18650 Battery Test

The 18650 usually are properly market, lets see whats up with this one

Not really, the ones I have measured are mostly optimistic with their specifications.

 

[T0RN4D0]

Well sure there is a lot of crap, but DX for example marks them as crap. While smaller ones (16340, AAA and alike) are typically all crap.

It would be interesting to try it at a lower discharge. Anyone knows the officiall standards for determinating the capacity of these things?

 

[old4570]

Well sure there is a lot of crap, but DX for example marks them as crap. While smaller ones (16340, AAA and alike) are typically all crap.

It would be interesting to try it at a lower discharge. Anyone knows the officiall standards for determinating the capacity of these things?

Wow , thats a very broad brush your using there .

Lower discharge wont help , they just dont have the capacity to compete with a half decent battery . For the same money you can buy , Trustfire - Ultrafire - or Uniquefire [ New to DX ]

+ A hobby charger that charges and discharges and then calculates capacity .

If anyone wants to send me one ?????
ill give it a serious workout . :candle:

 

[HKJ]

I am working on a test of 18650 batteries, using a CBA battery analyzer.
Here are some preliminary results:
AW2200: 2100mAh
Trustfire2500: 2150mAh
UltraFire2600: 2200mAh
Xtar2200: 2250mAh

The capacity will vary depending on discharge current, but not more than 100-200mAh from 0.3A to 3A current

 

[how2]

Well done old4570, I to was going to purchase GTL16340 1200mAh batteries but everyone advised me not to buy them.

I was still wanted to know if the capacity was correct. With you testing the 18650 model and proving that they are only half the capacity, the 1200mAh must be 400mAh.

Thanks for biting the bullet .

 

[old4570]

Well done old4570, I to was going to purchase GTL16340 1200mAh batteries but everyone advised me not to buy them.

I was still wanted to know if the capacity was correct. With you testing the 18650 model and proving that they are only half the capacity, the 1200mAh must be 400mAh.

Thanks for biting the bullet .

The only CR123A with 1200mAh might be some high quality Primaries [ Non rechargeable ] , which is why some folk like there primaries .

Rechargeable CR123A,s might come close to 650mAh or possibly more , but usually think in the neighborhood of 500-600mAh , again very dependent on the individual cell and quality . I have a few that have topped 600mAh capacity .

Flea Bay batt pushed some : 676mA to the 30 minute mark .
Spiderfire Pushed some : 619mA to the 30 minute mark .
AW did some : 620mA Give or take at the end , depending on just when it became depleted .
KD = some 545mA
Solarforce = 544mA





Trustfire = 513mA
DX = 342mA
Ultrafire No 8 = 528mA
Ultrafire no 7 = 590mA
Ultrafire Flea Bay No 5 = 535mA

Unfortunately I no longer have the images from that test so cant re-fresh the post .

1/ KD – PRCR123A 3.7v - 625mAh - $3.01 each
2/ Solarforce PRCR123A 3.7v – 880mAh - $3.95 each [ 800mAh claimed by seller ]
3/ Trustfire – PRCR123A 3.7v – 880mAh - $2.25 each .
4/ E-bay – RCR123A 3.7v – 1000mAh - $2.20 each.
5/ Ultrafire – RCR123A 3.7v – 880mAh - $3 each [ Ebay ]
6/ AW- PRCR123A 3.7v – 750mAh - $9 each
7/ Ultrafire – PRCR123A 3.7v – 1000mAh - $3.19 each
8/ Ultrafire – PRCR123A 3.7v – 880mAh - $2.50 each
9/ DX - RCR123A – 800mAh 3.7v - $1.64 each .
10/ Spiderfire – PRCR123A 3.7v – 1000mAh - $4 each

 

[LightBright]

Too bad you can't somehow link this review to the seller's Feedback on ebay... thanks for testing those cells, very small sample size but obviously 2800 is a HUGE LIE !!!

 

[Larbo]

Careful those things dont go

 

[how2]

old4570 are you going to test the Following?

2 x Superfire RW 18650 2600 mAh 3.7V Protected Battery(orange)

4 x RECHARGE 18650 2800mAh Superfire 6P 12P BATTERY(Blue)

4 x Superfire 18650 Li-ion 2600mah Rechargeable Battery(Green)

Just saw these on flea bay.

 

[old4570]

old4570 are you going to test the Following?

2 x Superfire RW 18650 2600 mAh 3.7V Protected Battery(orange)

4 x RECHARGE 18650 2800mAh Superfire 6P 12P BATTERY(Blue)

4 x Superfire 18650 Li-ion 2600mah Rechargeable Battery(Green)

Just saw these on flea bay.

I was looking at the superfire batteries ... When I buy some ?
It was a choice between the GTL and Superfire , I thought the GTL would be the worse of the two .

Maybe in a couple of weeks .