26800 Lithium-ion battery

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texas shooter
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26800 Lithium-ion battery

I ordered a Nightwatch NSX4 XHP50.2 K4 from Nealsgadgets. I see it listed as using a 26800. I found some data on both and the 26800 is for sale in the USA for $4.75. https://alofthobbies.com/qb-26800-6800mah-37v.html And a test review. https://secondlifestorage.com/showthread.php?tid=6806 I’ve got a few 26650 lights with very long springs that it might fit in. I received 4 of them two days ago. It is exactly 80mm’s and too long to fit anything. Diameter wasn’t an issue as they slid into all 26650 tubes.

I’m really limited in my testing ability. So I charged the battery over night and it held a charged voltage of 4.19 after an hour off the charger. Due to their length I used the Olight Universal Battery Charger. For the discharge test I used a Cree XP-L2 P60 dropin with 2-7135 chips and duct tape. After exactly 10 hours of running termination voltage was 2.84 volts. I’m guessing it’s around 7000 mah capacity. 15 extra mm’s for about 1400 mah over the best 26650 battery. Worth it?

Edited by: texas shooter on 07/27/2020 - 16:55
CNCman
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WOW, that is Massive !! Shocked

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Not a bad trade off for the extra size. It’s not like a light that sized would have a deep carry pocket clip or anything so I would only carry it in a bag or something like that. Few of those in a DIY power bank would be nice. $4.75 a pop is super reasonable.

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texas shooter
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I’m looking at my Convoy M3 and L2. I want both in 26800 now. Comparing Mooch’s test between the best 26650 and this 26800 it’s about 1400 mah extra at 10 amps. Yes, 2-18650’s will equal this but I prefer single cell lights for work.

Lightbringer
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Noice!

I’ll be looking to see if any of my 26650 lights have “too big” springs. LOL

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Agro
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I’ve seen the battery before and I really liked it. I asked a couple manufacturers to offer longer tubes…without success.
Nice to see a manufacturer that tried, though this is not my kind of light.
I haven’t thought about trying to fit it in a 26650 light. Wink

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Personally would love to have a quad tube for my L6 but alas
I think ya would have to remove one of the springs at one end and replace it with a brass standoff or something.

jeff51
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I’ll see how much room is in my various 26650 lights.
Seems I remember the SP70 had a long tube.
All the Best,
Jeff

Helios azimuth
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Sounds like a great battery for my needs.
Stupid question now. Is it possible this size battery will become popular and widely available or will it fade into obscurity? The battery world seems to be “driven” by EV manufacturers, so does anyone have inside info or a crystal ball to assess the chances? And then there is the charger issue…. any thoughts or guesses?

sarge12
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Nealsgadgets also list 21700 batteries as being usable in that light. I have not got a single charger that could charge a battery that long, so that would be a deal breaker for me. I guess I could get one of those olight chargers with magnetic positive and negative ends, but still, as many 21700 batteries as I have, I would just use them. you could also rig up a piece of steel bar 26mm diamater and 15mm long on the negative side to allow use of 26650 batteries. I just never have liked batteries of unusual size. In spite of what Olight would have you believe, a standard 21700 protected button top battery will work fin in my seeker 2 pro turned with the negative closest to the head, it just can’t be charged inside the light. The orbtronics batteries work well. No need to pay over twice as much for the Olight modified batteries just to have a spare.

texas shooter
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I’ve got some 26700 that fix everything but Fivemega host. 26800 fit nothing. It comes close in the Convoy M3 but it will need some milling.

Agro
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Helios azimuth wrote:
Sounds like a great battery for my needs.
Stupid question now. Is it possible this size battery will become popular and widely available or will it fade into obscurity? The battery world seems to be “driven” by EV manufacturers, so does anyone have inside info or a crystal ball to assess the chances? And then there is the charger issue…. any thoughts or guesses?

I don’t think there’s significant future for this size. No big cell manufacturers make it which means that few flashlight manufacturers care.
This is unfortunate though, 26800 is quite an ergonomic size.
Helios azimuth
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Agro wrote:

I don’t think there’s significant future for this size. No big cell manufacturers make it which means that few flashlight manufacturers care.
This is unfortunate though, 26800 is quite an ergonomic size.

Thanks for the reply. I think I’ll pass on this one and stick to a few popular sizes.
texas shooter
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I received the Nightwatch NSX4 XHP50.2 K4 from Nealsgadgets today. It came with a Yonii C2000 battery charger that holds up to 86mm batteries. https://ibb.co/0Ysd2FM https://ibb.co/GMpTnY5
No idea of this chargers quality.

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Lightbringer wrote:
Noice!

I’ll be looking to see if any of my 26650 lights have “too big” springs. LOL

Good to see that I am not the only one that started checking my lights and thinking about “Will it fit?”

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texas shooter wrote:
I received the Nightwatch NSX4 XHP50.2 K4 from Nealsgadgets today. It came with a Yonii C2000 battery charger that holds up to 86mm batteries. https://ibb.co/0Ysd2FM https://ibb.co/GMpTnY5 No idea of this chargers quality.
Thanks for the pics. I am also getting that light through SkyLumen. I asked him about the charger that comes with it. He said single cell and charges at 2 Amps. No doubt the same one you have.

When I google YONII C2000 nothing comes up. Before I knew the name that you provided I decided that I better get Two of these Folomov magnetic chargers. Only charge at 1Amp , but good to have others in case YONII is not reliable and for the ability to charge more batteries.

https://www.batteryjunction.com/folomov-a1-usb-liion-charging-cable.html...

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Got the 26800 to fit a FT03 with De-lensed 90.2.. copper contact on driver, bored out copper rings and driver retainer, to space out battery tube, flat laying (when totally compressed) alloy gold plated tail cap spring… 4.21v 22.7amps 5200lumen off the T/A maukka lumen tube.

Purchased 4 of the QB26800’s… thinking about maybe making a couple custom tubes for other lights I have…it is a really good performing battery so far…

KB1428 “Live Life WOT

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Wow. A dream walking light.

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KawiBoy1428 wrote:
Got the 26800 to fit a FT03 with De-lensed 90.2.. copper contact on driver, bored out copper rings and driver retainer, to space out battery tube, flat laying (when totally compressed) alloy gold plated tail cap spring… 4.21v 22.7amps 5200lumen off the T/A maukka lumen tube. Purchased 4 of the QB26800’s… thinking about maybe making a couple custom tubes for other lights I have…it is a really good performing battery so far…

Now this would make one great BFL build that I would buy! What a cell and the price is amazing!

Doug S.

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Liking my 26800QB Powered…UTORCH 3×50.2 3v……… Big Smile

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@texas shooter
Thanks for the link (‘alofthobbies’). Unfortunately, the shipping of $12.50 USD to Canada breaks the bank.

Had purchased a NA40SE and shortly after receiving saw this add-on: an extension tube with this similarly sized battery. But cells not within the OEM device are not shipped here. Would have liked the form factor plus an increased output (6500+ lm).

Backstory; Neal (Gadgets) has this but at 98 mm length. The extension tube may ‘lego’ to some other lights? [link in pic]

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KawiBoy1428 wrote:
Liking my 26800QB Powered…UTORCH 3×50.2 3v……… Big Smile !{width:100%}https://i.postimg.cc/ncJBJz7K/IMG-1872.jpg!

What !? Shocked !!!

Did you paint the tube? Put a wrapper over the tube??? Photoshop???

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ggf31416 wrote:
KawiBoy1428 wrote:
Liking my 26800QB Powered…UTORCH 3×50.2 3v……… Big Smile !{width:100%}https://i.postimg.cc/ncJBJz7K/IMG-1872.jpg!
Shocked !!!

Did you paint the tube? Put a wrapper over the tube???


No..the head was opened up with minimal clearance, like a reamed fit it is tight to the battery O.D. and a ring groove machined into the neck, a circlip ring inside the head engages the ring groove on the battery to hold in place that is the actual battery (with out the wrapper) plugged into the C8F head… been working/testing and working on a couple idea’s…

KB1428 “Live Life WOT

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BaronVonEissler wrote:
texas shooter wrote:
… It came with a Yonii C2000 battery charger that holds up to 86mm batteries. …
No idea of this chargers quality.

When I google YONII C2000 nothing comes up. …

I once told HKJ to review the Yonii Q1, which I also bought. He mispelled the name, though. Bad stuff (the charger).

Sat, 08/22/2020 - 15:31

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texas shooter
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Barkuti wrote:

BaronVonEissler wrote:
texas shooter wrote:
… It came with a Yonii C2000 battery charger that holds up to 86mm batteries. …
No idea of this chargers quality.


When I google YONII C2000 nothing comes up. …


I once told HKJ to review the Yonii Q1, which I also bought. He mispelled the name, though. Bad stuff.

The one that came in the deal only has two leds; charge and full. Different slider, claims 2 amp charging. I’ll stick to the Olight Universal Charger.

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texas shooter wrote:
Barkuti wrote:

BaronVonEissler wrote:
texas shooter wrote:
… It came with a Yonii C2000 battery charger that holds up to 86mm batteries. …
No idea of this chargers quality.


When I google YONII C2000 nothing comes up. …


I once told HKJ to review the Yonii Q1, which I also bought. He mispelled the name, though. Bad stuff.

The one that came in the deal only has two leds; charge and full. Different slider, claims 2 amp charging. I’ll stick to the Olight Universal Charger.

Can you take a picture of this Yonii C2000 charger, beside the 26800 battery and also a protected/unprotected 21700 battery?

~~~~~

I’ve tried the Yonii Q1 charger from AliExpress, it fits protected 21700 but wouldn’t fit 80mm long batteries.
I’ve also got a Yonii Y2 and Yonii C1 bundled with some flashlight, these also fit protected 21700 batteries, but definitely not 80mm length.
(the Yonii C1 looks exactly like an Eizfan NC1 — in fact peeling the “NC1” label sticker on the Eizfan NC1 will reveal “Yonii C1” embossed on the Eizfan NC1 charger.

It would seem like “Yonii” is an OEM for basic chargers.. Based on Google search, I’ve seen a Yonii C2 and a Yonii Q4, but they don’t seem to fit 80mm length either.

Sidney Stratton
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Barkuti wrote:


I once told HKJ to review the Yonii Q1, which I also bought. He mispelled the name, though. Bad stuff.

You’ll have to excuse Hendrik, he often misspells and misconstructs his texts.

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When I said “bad stuff” above I mostly referred to the Yonii Q1's test result, it ended up pretty bad.

Will anyway send a private message to Henrik, or is it Hendrik? Henrik is as I had seen his name before, and the spelling for which a good deal of hits the (G00gl€) forum search makes. Will suggest him to fix the spelling typo.

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My bad, you’re right; Henrik K. Jensen.

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