Trustfire RCR123A Battery Test

[old4570]

I haven't seen these before , so there new to me , sure do look nice , but nice don't feed the flashlight .

Trustfire Protected 16340 / 880mAh 3.7v [ Done ]

Length = 1.425inch Dia = o.650inch
Length = 36.2mm Dia = 16.3mm



1st One = 566mAh
2nd One = 550mAh

Sorry Guys , not 880mAh .. But very middle of the road .

 

[Black Rose]

Looking forward to this one.

I'm interested to see if these are "true" 880 mAh cells.

They have the same wrapper design as the 2400 mAh 18650 cells TrustFire recently brought out that have been verified as having their stated capacity.

 

[Norm]

Just wondering what the overall length is? are they 35.3mm like the silver UltraFires, too long for a lot of applications, or are they about 34mm the same as a CR123.
Thanks Norm

 

[old4570]

Sorry guys , had to go out ...

Pulled them of the charger and there 4.2v ..

Will update ASAP ...

About 36mm , my plastic calipers are imperial .. Would not use steel calipers on these Hu ! :poof:
Found the plastic digitals , 36.2mm long .

 

[DHart]

:popcorn: Trustfire's 18650 2400 mAh black wrapper cells have tested very well, so... I have high hopes for these little 16340's.

 

[old4570]

Test Done ....

Hope this information helps .

 

[Black Rose]

Bummer.

They are no better than sku 19627, just in a better looking package.

 

[Norm]

Thanks for the measurements.
It looks like I am going to buy half a dozen of AW's 16340's.
I don't know why the insist on making these cells so long, I know they fit some lights but there is a lot that they are too long for :(.
Norm

 

[Black Rose]

It's annoying that they don't conform to a standard size.

I have a pair of TrustFire 16340 cells (sku 19627) and the protection circuit is a bit too wide to easily fit my Romisen lights. I have to shake the cells out.

However, I am glad that the TrustFire cells are a bit longer, as I have one light that will not work with an AW 16340.
The positive button top of the AW cell does not make contact with the driver base....the TrustFire cell does.

 

[Black Rose]

old4570,

Could you measure width at the bottom of the cell where the protection strip goes up the side.

I'm curious to see if they've fixed the problem with that part sticking out too far, which causes fitment issues.

 

[Norm]

Am I reading your graph correctly? starting at nearly 2 Amps is almost 4 X C, isn't going to give you a real capacity figure.
Or am I missing something? I don't regularly test Li-ions.
Norm

Edit: I'd be very interest to know at what voltage the test is terminated?
Another Edit: I just did a test on a silver protected UltraFire discharged at a constant .5A, results 360mAh over 44 minutes final battery voltage 3.3Volts
I'm not sure I understand your method of testing, could you please explain your setup.

 

[old4570]

Am I reading your graph correctly? starting at nearly 2 Amps is almost 4 X C, isn't going to give you a real capacity figure.
Or am I missing something? I don't regularly test Li-ions.
Norm

Edit: I'd be very interest to know at what voltage the test is terminated?
Another Edit: I just did a test on a silver protected UltraFire discharged at a constant .5A, results 360mAh over 44 minutes final battery voltage 3.3Volts
I'm not sure I understand your method of testing, could you please explain your setup.

Hmmmm... T-V = 3v

Solarforce L2 Mini MC-E ... RCR123A test machine ... Dont have one of those Hobby charger/dis chargers



See link / RCR batt test .

 

[Norm]

Thanks for the info, not too sure I agree with your method starting at close to 2A is way too high for a RCR123. You will get comparative results, but not meaningful Ah ratings.

Have you read this thread? Some R123 li-ion comparison tests - CandlePowerForums

 

[old4570]

old4570,

Could you measure width at the bottom of the cell where the protection strip goes up the side.

I'm curious to see if they've fixed the problem with that part sticking out too far, which causes fitment issues.

o.630 to o.635inch or 16.2mm

 

[Justin Case]

Hmmmm... T-V = 3v

Solarforce L2 Mini MC-E ... RCR123A test machine ... Dont have one of those Hobby charger/dis chargers



See link / RCR batt test .

The last two graphs in the link to your RCR123A tests are very confusing and unusual. The 2nd to last uses very unusual x and y coordinates. I'm not sure what it means since normally a capacity test is done at a constant amp draw and voltage is measured until it falls below a specific point indicating end of life. Then you plot voltage vs time or equivalently voltage vs the running mAh. It doesn't make any sense in your graph that mAh is zero at the end of battery life. In the last graph, I seriously doubt that you are drawing 150A, which is the top of the scale for your Y-axis.

Further, that link still provides no explanation as to how you calculate your mAh capacities. All I can think of is that you are doing some sort of numerical integration of your amps vs time curve. But since the data points are so spread out, I can't see that as being accurate to more than one significant digit, while you express the capacity in 3 significant digits.

Finally, when you write out a fractional number, the leading digit is a zero ("0"), not the letter "o". Thus, such a number is written, for example, as 0.650 inches, not o.650 inches. It's a number, not a letter, regardless of the fact that many people say "oh" when they mean "zero".

 

[Black Rose]

o.630 to o.635inch or 16.2mm

Really? That's slimmer than an AW 16340.

 

[baterija]

1st One = 566mAh
2nd One = 550mAh

Sorry Guys , not 880mAh .. But very middle of the road .

Actually look pretty decent when you consider li-ion is nominally rated at .5A and these spent most of their discharge between 1.0-1.5A with a :dedhorse: start of the test closer to 2A.

Whether cell to cell variability/quality control is any better remains to be seen though.

 

[old4570]

The last two graphs in the link to your RCR123A tests are very confusing and unusual. The 2nd to last uses very unusual x and y coordinates. I'm not sure what it means since normally a capacity test is done at a constant amp draw and voltage is measured until it falls below a specific point indicating end of life. Then you plot voltage vs time or equivalently voltage vs the running mAh. It doesn't make any sense in your graph that mAh is zero at the end of battery life. In the last graph, I seriously doubt that you are drawing 150A, which is the top of the scale for your Y-axis.

Further, that link still provides no explanation as to how you calculate your mAh capacities. All I can think of is that you are doing some sort of numerical integration of your amps vs time curve. But since the data points are so spread out, I can't see that as being accurate to more than one significant digit, while you express the capacity in 3 significant digits.

Finally, when you write out a fractional number, the leading digit is a zero ("0"), not the letter "o". Thus, such a number is written, for example, as 0.650 inches, not o.650 inches. It's a number, not a letter, regardless of the fact that many people say "oh" when they mean "zero".

Once again , I just dont know what to say ??? You leave me confused and wanting to kick your *** !

I asked you nicely to leave me alone !

150A ??? Are you even sane ? these batts dont even have 1A let alone 150 of them .. So ill take it your Nit Picking again ...

Do it to some one else will you ... \\

So one more time : Push Off !

 

[Tohuwabohu]

These black and red Trustfires are too long for most of my flashlights.
Side by side to other batteries you can see how long they are:

I bought six of them and measured their capaciaty at 1A discharge current.

The 4 AW RCR123s are more than a year old and have seen quite a lot of use (and abuse).

 

[Black Rose]

Thanks for that comparison photo and discharge graph Tohuwabohu.

Those cells are really out of proportion.