Test / Review: Panasonic NCR18650B 3400mAh (Green)

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HKJ
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Test / Review: Panasonic NCR18650B 3400mAh (Green)

Panasonic NCR18650B 3400mAh (Green)

DSC_2680

Official specifications:

  • Real capacity: NCR 3400mAh
  • Size: 18mmx65mm
  • Netweight: 45g
  • <=45mOhm
  • Cut off at 2.75V, full charge 4.35V (Wrong value)


Panasonic%20NCR18650B%203400mAh%20(Green)-info

This is the latest cells from Panasonic with the highest capacity.
The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.

DSC_2681DSC_2682
DSC_2683
DSC_2684

Panasonic%20NCR18650B%203400mAh%20(Green)-Capacity

These batteries are good at both low and higher current.

Panasonic%20NCR18650B%203400mAh%20(Green)-CapacityTimeHours

Panasonic%20NCR18650B%203400mAh%20(Green)-CapacityTime

Panasonic%20NCR18650B%203400mAh%20(Green)-Energy

Panasonic%20NCR18650B%203400mAh%20(Green)-PowerLoadTime

Panasonic%20NCR18650B%203400mAh%20(Green)-TripCurrent

These are unprotected cell, i.e. the protection will not trip.

Panasonic%20NCR18650B%203400mAh%20(Green)-Charge



Conclusion

This is genuine Panasonic cells and cannot get any other rathing than very good, but remember that they are unprotected!



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Edited by: sb56637 on 08/26/2014 - 17:45
scaru
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Wow! That is pretty impressive. Thanks for another great test HKJ. Smile

BetweenRides
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Been waiting to see this one. Thanks, HKJ!

Ledsmoke
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Interesting this advance in technology.

~ Ledsmoke ~

Dutch humor:

[quote=djozz]

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sb56637
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Thanks very much for the excellent review! Frontpage’d and Sticky’d.

Budget Light Forum ...where Frugal meets with Flashlight!

Pok
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—-Cut off at 2.75V, full charge 4.35V

Full charge @ 4.2V
Keeppower 18650 3400mAh
http://budgetlightforum.com/node/11774

CNQ @ 4.35V
http://www.cnqualitygoods.com/goods.php?id=1624

So….. Full charge 4.35V or 4.2V ?

HKJ
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Pok wrote:
---Cut off at 2.75V, full charge 4.35V Full charge @ 4.2V Keeppower 18650 3400mAh http://budgetlightforum.com/node/11774 CNQ @ 4.35V http://www.cnqualitygoods.com/goods.php?id=1624 So..... Full charge *4.35V* or *4.2V* ?

It is 4.2 volt for a full charge.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Pok
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HKJ wrote:

Pok wrote:
—-Cut off at 2.75V, full charge 4.35V Full charge 4.2V Keeppower 18650 3400mAh http://budgetlightforum.com/node/11774 CNQ 4.35V http://www.cnqualitygoods.com/goods.php?id=1624 So….. Full charge 4.35V or 4.2V ?

It is 4.2 volt for a full charge.

Thanks :bigsmile:

Your #0 post still 4.35V

HKJ
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Pok wrote:
HKJ wrote:

Pok wrote:
---Cut off at 2.75V, full charge 4.35V Full charge @ 4.2V Keeppower 18650 3400mAh http://budgetlightforum.com/node/11774 CNQ @ 4.35V http://www.cnqualitygoods.com/goods.php?id=1624 So..... Full charge *4.35V* or *4.2V* ?

It is 4.2 volt for a full charge.

Thanks :bigsmile: Your #0 post still 4.35V

That is a copy from the website, in the table I have the correct value.

I have edited the "Official specifications" to better show it.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

yavi
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Great as always HKJ, I will have to wait till my 2900’s and 3100’s begin to be tired, as I have more batteries than time haha.

kreisler
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FOI the generic PROTECTED ncr18650B 3400mAh are available from trusted dealers, see for example

HKE, ..

length is spec'ed as 70.5mm but i can hardly believe that. Such cells wouldnt fit in a grand variety of common popular 1x18650 flashlights or multi-18650 flashlights.

Anyway, they exist, and price is good too shipped. Let's recall that Protected Efest 3400 cost ~25 bucks shipped, button top version.

*FMI* i got 4 i/o sh
DarkSide
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I have a batch of these cells from Ric and these are fantastic in performance and quality.

 


spaceboy
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I just got 2 of these from FastTech and they fit in the Sipik sk98 clone (a touch long but you can screw it shut) and they fit nicely in the Aleto 26650 version with the 18650 insert.

kuoh
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I got 2 pairs from FT that look exactly like those, and they measure right at 70mm with my cheapie caliper, so I’d say the spec is pretty close.

KuoH

kreisler wrote:

length is spec’ed as 70.5mm but i can hardly believe that. Such cells wouldnt fit in a grand variety of common popular 1×18650 flashlights or multi-18650 flashlights.

spaceboy
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Just measured mine – 69.59mm

reynoldg
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i guess its not a good thing to use this battery on a charger that only charges up to 4.2 v ? like the nitecore i4 ?

HKJ
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reynoldg wrote:
i guess its not a good thing to use this battery on a charger that only charges up to 4.2 v ? like the nitecore i4 ?

 

?

You have to use it on a 4.2 volt charger or risk problems.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Buwuve
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The battery is full charged with 4,2V.

 

If you have other batteries like the Samsung ICR 18650 30A which is full charged with 4,35V - a 4,2V charger is not a problem and will not harm the battery. Of course it's not charged 100% full, but you can read in many thread, that a not 100% full charged battery will have a longer lifetime.

Light up the darkness.

reynoldg
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sorry i thought fully charged is somewhere between 4.2 and 4.35 hence the correction above.
thanks you. Smile

XML83
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HI,

I would like to ask the difference Panasonic Protected and Unprotected batteries.

In protected batteries it had some kind protection for overcharge, over-discharge, etc..
and unprotected didn’t.

So.. If I’m charging the protected batteries, it will stop if the batteries FULL. ( Green Light )
what about the unprotected one ? Is it the same ? My charger output DC = 4.2V

I’m gonna used it for some kind ultrafire XML-T6 flashlight is it OK ? After an hour using full brightness it’s very hot.

Thanks.

ri chevy
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In a good, reputable charger, the unprotected Panasonic NCR18650B cells shown in the 1st post will also stop at or around 4.2v’s. The protection circuit just cuts out when the voltage gets to low in the cell from usage, not necessarily from charging, or overcharging. I have several of these cells, and they are excellent! Better than most other cells. When using them, you just have to be very disciplined and be on the lookout for the 1st significant dip in output on the drop in, and then stop and recharge immediately. Most good, reputable drop ins have a protection circuit built in that will stop the output of the light when voltage is too low.

XML83
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ri chevy wrote:
In a good, reputable charger, the unprotected Panasonic NCR18650B cells shown in the 1st post will also stop at or around 4.2v’s. The protection circuit just cuts out when the voltage gets to low in the cell from usage, not necessarily from charging, or overcharging. I have several of these cells, and they are excellent! Better than most other cells. When using them, you just have to be very disciplined and be on the lookout for the 1st significant dip in output on the drop in, and then stop and recharge immediately. Most good, reputable drop ins have a protection circuit built in that will stop the output of the light when voltage is too low.

I don’t think mine is reputable charger. It only said Video/Camera Digital Travel Charger.

Input : 100-240V max 150mA
Output 4.2V

How long usually it takes to full charged it ?

I’m already charged for 7 hours and still charging.. Is it Normal ?

Thanks.

HKJ
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XML83 wrote:
How long usually it takes to full charged it ? I'm already charged for 7 hours and still charging.. Is it Normal ? Thanks.

With a fast charger about 4 hours from empty, slower chargers can easily be twice that time, but that does not make them bad chargers.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

Duttz
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hey smoke can i ask u something

Duttz

poster
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why does this Panasonic NCR18650B co$t more then the Sanyo NCR18650BF

when “ the Sanyo NCR18650BF is better “: http://batterybro.com/blogs/18650-wholesale-battery-reviews/17840447-awe...

thank you

Halo...
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Sellers will charge whatever they think people will pay. Price never represents which is better, of any product.

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Alot probably has to do with ignorance. When people think ‘NCR18650B’, they think ‘best 18650 around’. When they think ‘NCR18650BF’, they think ‘WHAT?’. People don’t know about this battery, and are unlikely to choose it over something that they have been told is the very best for the past few years.

Without lamps, there’d be no light.

Sirius9
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I just bought NCRBs protected for 6$/pice, where can I get NCRBFs cheaper (with free international registered shipping included)?

 

L4M4
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Link pls!
6$ per piece would be a bargain for those cells!

Sirius9
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L4M4 wrote:
Link pls!
6$ per piece would be a bargain for those cells!

oops, my mistake, unprotected are 6$/piece, protected are 6.5$/piece
but here you go:
http://budgetlightforum.com/node/33282
also worth considering this: http://www.gearbest.com/batteries/pp_190732.html

 

L4M4
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THanks!
Ordered 4 of the protected ones!

The price from GB is very good – if they are real cells…

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