Test / Review: Sanyo UR18650FM 18650 2600mAh

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JackCY
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Test / Review: Sanyo UR18650FM 18650 2600mAh
Battery: Sanyo UR18650FM 18650 2600mAh
Source: FastTech
Voltage on arrival: 3.77V
Protection: Yes
Button top: Yes
Claimed capacity: 2600mAh
Measured capacity: 2563mAh @ 1A / 2.9V
Internal resistance: 20mOhm
Calculated capacity: 2389mAh @ 900mA / 3.0V

FastTech

Used the battery a bit, charged it in ML-102 and discharged in my flashlight.
Finished my battery holder for a Turnigy Accucel 6 and tested the batteries.

Internal resistance:
18 mOhm / 2.95V / #1
22 mOhm / 4.12V / #1

20 mOhm / 3.86V / #2

Charged one battery on Turnigy Accucel 6, it trips the protection when charging, showed 4.12V with my DMM, but yes my charger even when set to Lion 4.1V does like to go even up to 4.25V to speed up the final charging and charges the unprotected batteries high.

No temperature raise during charging or discharging.

Discharge capacity at 1A from fully charged 4.12V down to Turnigy claimed 2.9V, once I took the battery off and measured it with DMM it had 3.5V or so. I’ve seen it at 2.95V with DMM once when my flashlight told me to change it, so there certainly is still some charge.

Discharge capacity at 1A:
2563mAh / #1

As expected a very good battery, will pull 2.8A on a 8*7135 driver but not for long, driver/LED heat up? Or battery can’t deliver the needed voltage?
Anyway it is a long battery with the protection and a button top, think 69.6mm. Does fit into an ML-102 charger with a little push in.
Came with a clear transport box, wrapped in bubble wrap and bubble envelope.

Will test the second cell after finishing Trustfire 26650 5000mAh.

It seems to have the claimed 2600mAh, when fully charged and fully discharged even at not so modest 1A.

Edited by: sb56637 on 08/26/2014 - 17:45
myst999
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Great review – Thanks! Any idea of why these protected Sanyo’s at 2800mah (versus 2600mah) are actually cheaper? (.02cents lol)
http://www.fasttech.com/products/1420/10001901/1143804-sanyo-ur18650zt-1...

Okinos
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Because sanyo 2800mAh, should be charged to 4,35V to have 2800mAh capacity. Battery protection allow only about 4,2V. So 2600mAh could have more mAh than 2800mAh.

JackCY
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myst999 wrote:
Great review – Thanks! Any idea of why these protected Sanyo’s at 2800mah (versus 2600mah) are actually cheaper? (.02cents lol) http://www.fasttech.com/products/1420/10001901/1143804-sanyo-ur18650zt-1...

Search Sanyo UR18650ZT I believe, they are newer 4.3V cells, been asking similar questions before buying the 2600mAh, look around you will find it Smile
They are not bad but are 4.3V and won’t give you 2800mAh without going to 4.3V and maybe even then they might be slightly over rated.

I went with the older and proven UR18650FM.

JackCY
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Okinos wrote:
Because sanyo 2800mAh, should be charged to 4,35V to have 2800mAh capacity. Battery protection allow only about 4,2V. So 2600mAh could have more mAh than 2800mAh.

4.3V

UR18650ZTA is 4.35V @ 3000mAh.

myst999
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Ahh! Thanks for the info guys – definitely going with the 2600mah then Smile

Okinos
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yes, sure , I made a mistake. Thanks

Werner
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You can calibrate the voltage of the b6 charger, look at hobbyking manual.

JackCY
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Werner wrote:
You can calibrate the voltage of the b6 charger, look at hobbyking manual.

Cannot, covered it in another thread somewhere, I have a limited version that has Lixx internal resistance testing, can’t be calibrated by entering the startup configuration mode by holding buttons, I have tried all combinations before. Only option would be to modify the firmware or adjust the sensing resistors or something, none of my equipment is calibrated so it’s impossible anyway.

It also doesn’t have logging output, only temp. probe in the options.

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JackCY wrote:
will pull 2.8A on a 8*7135 driver but not for long, driver/LED heat up? Or battery can’t deliver the needed voltage?

hmm – any more info on this? I have 4x of these which I ran in my firefoxes 3 in series which supposedly pulled 4a fine… the cells got warm but i didnt notice any sag?

I am running the same 4x in my skyray king now but i guess the currents much less because the 4 of them are in parallel.

I am curious now, I think I might throw mine on my hobby charger this weekend to see whats up lol.

thanks for the review!

Would you mind keeping the wrong flashlight?
Best wish, May
Tmart service team

 

Soumil wrote:

PLEASE HELP ME GEARBEsT! IM LITERALLY CRYING!

 

JackCY
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Well I have only one flashlight, sure I could dig out some resistors and measure Amps with my DMM, I’m quite sure the battery can supply tons of Amps, at least if you look at discharge graphs in some other tests, they do test it at 5A.

I think it is the driver or emitter in my flashlight, it overheats quickly with so many Amps, heat rises, resistance increases, Amps go down.

Comparison graph, Sanyo FM, ZT, Panasonic A, B.

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JackCY wrote:
Well I have only one flashlight, sure I could dig out some resistors and measure Amps with my DMM, I’m quite sure the battery can supply tons of Amps, at least if you look at discharge graphs in some other tests, they do test it at 5A.

I think it is the driver or emitter in my flashlight, it overheats quickly with so much Amps.

Comparison graph, Sanyo FM, ZT, Panasonic A, B.

ah ok… thanks for the additional info

Would you mind keeping the wrong flashlight?
Best wish, May
Tmart service team

 

Soumil wrote:

PLEASE HELP ME GEARBEsT! IM LITERALLY CRYING!

 

KristofB
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JackCY wrote:

Internal resistance:
18 mOhm / 2.95V / #1
22 mOhm / 4.12V / #1

20 mOhm / 3.86V / #2

Hi Jacky,

Did you measure that internal resistance using the new Turnigy Accucel 6 LiXX Internal Resistance feature?

How do you do that for a single cell? I tried, but it does not give me any value – seems that I need a balance lead as well? On your picture, it seems you are using a special balance lead (with only two wires) – could you elaborate on that?

nekdo12
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Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

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KristofB wrote:
Hi Jacky,

Did you measure that internal resistance using the new Turnigy Accucel 6 LiXX Internal Resistance feature?

How do you do that for a single cell? I tried, but it does not give me any value – seems that I need a balance lead as well? On your picture, it seems you are using a special balance lead (with only two wires) – could you elaborate on that?

Yes, I’m not sure how accurate it is, if you have a precise/calibrated DMM and a resistor of appropriate value you can measure it that way.

I use the Turnigy’s feature.
Yes you need to connect it to the balance port obviously Smile
That is how it works, charging port is for power, charge, discharge.
Balance port is for monitoring cells, measuring cells, balancing cells (low current).
Just connect the battery correctly to the balance port. From right: GND, cell1, cell2, …

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nekdo12 wrote:
Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

I’ve seen some crap on Panasonic site, never understand what is Sanyo doing there in descriptions of some batteries. Basic stuff there only no pics.

No F is not FM.
There is many batteries and many Fs:

Code stated mAh ring sleeve Volt
UR18650W2 1500 pink red 4.2
UR18650FJ 2200 red red 4.2
UR18650A 2250 violet / white red 4.2
UR18650FK 2400 green red 4.2
UR18650FM 2600 teal blue red 4.2
UR18650ZT 2800 violet orange 4.3
UR18650ZTA 3000 yellow violet 4.35

And many more!

The ring color denotes capacity.
The cover color probably indicates different voltage.

flash.light
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nekdo12 wrote:
Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

Panasonic Buys Sanyo for Its Batteries as reported in December 2009

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Thanks, I was just looking at these and the 2800’s for practically the same price
http://www.fasttech.com/products/1420/10001901/1143804-sanyo-ur18650zt-1...

Can you take a real life measurement of the Diameter? I know itt says 18.3mm but sometimes they are off.

The Giggle Loop

nekdo12
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flash.light wrote:
nekdo12 wrote:
Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

Panasonic Buys Sanyo for Its Batteries as reported in December 2009

I know that Wink
But I do not know these:
Is there any difference between UR18650FM and UR18650F?

JackCY
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nekdo12 wrote:
flash.light wrote:
nekdo12 wrote:
Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

Panasonic Buys Sanyo for Its Batteries as reported in December 2009

I know that Wink
But I do not know these:
Is there any difference between UR18650FM and UR18650F?


Yes.

Find the UR18650F, or rather get the specs from the source you’re buying them from, who knows what they are selling, they should inform the buyer.
If you already have them, just test them to find out capacity and so on.

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Noodles wrote:
Thanks, I was just looking at these and the 2800’s for practically the same price
http://www.fasttech.com/products/1420/10001901/1143804-sanyo-ur18650zt-1...

Can you take a real life measurement of the Diameter? I know itt says 18.3mm but sometimes they are off.

UR18650FM 18.5mm diameter over the protection connection strip, otherwise 18.35mm.

Why would you buy ZT? If you can charge it to 4.3V, why not, otherwise it might actually be worse than FM if charged only to 4.2V.

I could probably charge to 4.3V on my Turnigy in LiPo setting, maybe, maybe to even 4.35V, I know my LiPo had around 4.3V when finished. Would have to charge it again to find out.

Otherwise you are out of luck charging over 4.2V, need a rare charger for it.

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I have four pc of UR18650ZT, protected. I could not charge higher than 4.25v because the protection circuit switched off. Then the capacity was lower than for the FM version. Sad

JackCY
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sixty545 wrote:
I have four pc of UR18650ZT, protected. I could not charge higher than 4.25v because the protection circuit switched off. Then the capacity was lower than for the FM version. Sad

Yes, I forgot about the protection!
It kicks in on my FMs as well, they do stop at 4.15V?
My TF 26650s stop at 4.21V.

So yes, you need a protection designed for 4.3V cells, and so on.

I’m glad I really stick to the older FMs, see the ZT thread and probably go there to post questions about ZTs.

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JackCY wrote:
nekdo12 wrote:
flash.light wrote:
nekdo12 wrote:
Is there any difference between UR18650FM and UR18650F? (I do not find anything about FM, only about F on Sanyo/Panasonic site)

Panasonic Buys Sanyo for Its Batteries as reported in December 2009

I know that Wink
But I do not know these:
Is there any difference between UR18650FM and UR18650F?


Yes.

Find the UR18650F, or rather get the specs from the source you’re buying them from, who knows what they are selling, they should inform the buyer.
If you already have them, just test them to find out capacity and so on.

Ok I foud it.

UR18650FM=UR18650F, but not always Silly
You have UR18650F group. And in that group you have UR18650FM, UR18650FK, UR18650FJ,…

JackCY
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Yes I found out yesterday, there is a thread about bigmicro selling UR18650F.
Panasonic website has only UR18650F pdf, did not notice any info there though in regard to different code names.

I think the lower the second letter the older the type of cell and potentially lower capacity. FJ 2400, FK 2500, FM 2600, my guess.

nekdo12
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FM= 2600mAh
FK= 2400mAh
FJ= 2200mAh

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nekdo12 wrote:
FM= 2600mAh
FK= 2400mAh
FJ= 2200mAh

Lol I’m dumb, see I forget, I even have it in the table up there few posts up XD
ri chevy
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I realize that these batteries can put out a lot of power, but if using a drop in that only draws 1.5A, will these batteries be OK? Specifically a Malkoff M61 drop in. Are these Malkoff drop ins regulated for input voltage or amperage?

This is weird. I posted this on 2-3-2013 and is shows listed after 2-26-2013. ?????????????????? Now it doesn’t, but I have the screenshot. Edited on 2-27-2013

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ri chevy wrote:
I realize that these batteries can put out a lot of power, but if using a drop in that only draws 1.5A, will these batteries be OK? Specifically a Malkoff M61 drop in. Are these Malkoff drop ins regulated for input voltage or amperage? This is weird. I posted this on 2-3-2013 and is shows listed after 2-26-2013. ?????????????????? Now it doesn't, but I have the screenshot. Edited on 2-27-2013

Yep, these batteries will work just fine. Smile

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Thank you.

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Thanks very much for the review! Frontpage’d and Sticky’d.

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