Olight i3T with 10440s HIGH MODE - PK Cell vs. Demon Fire Lithium Rechargeable Batteries
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- Опубліковано 16 жов 2024
- In this video compares the runtime of two 10440s in the Olight i3t on its high setting. Unlike the PK Cell, the Demon Fire battery claims to be protected and have 600mAh capacity. In this video we test to see if these claims seem accurate.
Note: Olight does not recommend using these batteries in their lights.
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The additional length of the cell is the protection circuit board. Protected cells usually have their protection circuit at the negative end of the cell. You can usually see a ridge in the cells wrapping. It will look similar to the ridge at the top of the cell, but that ridge is from the can being rolled over to seal the cell. There will also be a thin metal strip that runs from the protection circuit up the side of the cell to the positive end under the wrap. Cells that have built in USB charging will most likely have the protection built into the charging circuit board. The additional length is the problem with many protected cells. They won't fit many devices because of it. Devices that have springs at both ends will usually accept them, but having that button at the positive end usually will not because it compresses the spring too much, perhaps completely, and puts so much force on that button and either breaks the circuit board or crushes the top of the cell. That could be dangerous! I'm surprised you didn't ruin your light by forcing it in. I think you should stick with the unprotected cells and just shut it off when in gets dim. Most flashlights today have low voltage protection (LVP) built into the light because most accept any standard 14500, 18650, 21700, ect. Cut-off is usually 2.8 or 2.9v. Olight puts their LVP in their protected proprietary batteries. So I'm unsure if there is any LVP built into the flashlight. But most of their lights today won't take a standard cell.
The only way your going to know the mAh of a cell is to get a charger/analyzer. I highly doubt any 3.7v 10440 cell can get anywhere near 600mAh of capacity. It's more than likely 320mAh or less. It's like those 9900mAh 18650 cells that you see on Amazon and Ebay. Most of them are around 1200mAh of actual capacity. It's physically impossible with todays technology. The best battery manufacturers in the world are topping out at 3500mAh for an 18650 cell. And those will be low to moderate drain cells. High drain (15 amps and higher) cells will always have less capacity and usually considerably less cycle life. But it is improving. I'm sure battery technology will change sometime in the next decade or so and hopefully will see some remarkable achievements.
You’re right, the 600mAh claim is way off. More likely around 300. Thanks for sharing this info 👍
Awesome! Looks like I’m picking up the demon fire cells.
Nice! I was pleasantly surprised by both the runtime and the battery protection.
Thanks for the great video! Just got my Demonfires yesterday and can't screw the cap all the way in on my I3T. Do you modify the spring?
Nice! I did not make any modifications. I had to screw the cap on tightly, then unscrew it a few times. I think my threads were not all the way clean. Perhaps the factory lubricant had congealed but eventually you should be able to screw it on fully. It is a tight fit though.
@@PardonMyEnglish Thank you for getting back to me so quick!!!
You bet! Enjoy the new batteries. They are my favorite option!
I couldn't even reach the first thread with both the demonfire batteries in.. I'm considering ways I might be able to shorten the batteries "hopefully without completely destroying them"
@Matthew Maurer I ended up buying another i3t to see if it would fit and it didn't, so I returned the batteries.
Curious? I tried the 10440 in the zombie i3E EOS and nothing. Then I tried the 10440 in the i3E EOS Christmas version and it works great. Any thoughts as to why? Thanks. I'm sure it has to do with the head caps. not sure why olight make different i3E EOS head caps, but hopefully you can look into this. The free ones are (better) than the one you actually pay for. HMM.
That is curious, indeed! You are not the only one who has mentioned this. Unfortunately I don’t know why some i3Es work with 10440s and others do not. I think you’re on to something though. There must be a difference in the head of the light. If I get another i3E down the line I’ll be sure to try to figure out what the difference is.
Mine was just the opposite. No output using the Christmas green i3e but output using the Zombie green using 10440. Now the following is strange, it has something to do with the Body of the flashlight, not the head. I took the Christmas green head & put it on the Zombie body & the flashlight works with 10440. Zombie head on Christmas green, No output. Lights work with a normal alkaline after no output with a 10440. Very odd. The body shouldn't make any difference.
@@WilliamsKnifeLife Thank you for trying and sharing this! It has been a quandary and this info helps. Great channel, by the way!
@@PardonMyEnglish Thank you. I just did a video on this problem number 1005. It seems to be the body of the flashlight that's the problem. This makes no sense electronically. I even measured the physical dimensions. Virtually identical with only a 0.1 mm difference. The same flashlight wont run a 1.2 Nickel Metal Hydride either. Only works with a 1.5 alkaline. Really odd stuff. It's got me confused.
Thank you! I added the link to your video in the description of the one I made on the i3E + 10440 Combo. Hopefully in time we’ll be able to figure out what’s up. Bizarre stuff!
Great review …! I figured it would kick in at 2.9 ..Definitely need pick me up some asap.
You called it!
after this test do these lights can run normal alkaline batteries? because like you mentioned rear spirng got short.
Good question. Mine still accept AAAs.
how long does the Demon Fire last in the i3t on low setting?
Good question. I actually haven’t tried this yet but I think it would last slightly longer than the PK Cell batteries. If I had to guess, I’d say 3 hours and 15 mins.
I spent $40 on the demonfire package and cant make them fit in any of my Olights 😓
It is definitely tight but they should still fit in the i3T. For me, I had to screw on and unscrew the tail cap with the battery in the light several times. I was able to tighten the tail cap on a little more each time I did this until it fits in the i3T. I haven’t been able to get them to work in the i3E. I hope this info helps!
@@PardonMyEnglish thank you for the reply. I've tried but without removing the spring I cant get the thread to even touch with 2 DF batteries in. I was able to fit one regular and one DF batterie in but even then it will barely screw on. Maybe the tolerances are tighter on newer ones (I bought the It3plus last week)
Oh, I didn’t realize you were using the i3T Plus. Unfortunately using any 10440s in the i3T Plus does not work. You’re actually lucky in a way because if they did fit it may have damaged the light. Basically stacking the batteries doubles to voltage to a level that the light cannot support.
If you have a standard i3T, using the DF cells is a good combo in my opinion (though not recommended by Olight).
Will the demonfire fit inside the i3T 2 EOS?
Yes but it is a super tight fit. You have to screw on the end cap pretty dang tight so you may want to use another 10440 if you are worried about the threads.
@@PardonMyEnglish right on thanks!
That's why the demon cell is more mah. Long runtime and will shutdown at specific voltage.
Yeah, it’s nice but a little longer than the PK Cells and other 10440s. It’s a squeeze to get them to fit but they do seem better due to the protection circuit.
why not just use a micro-stream? 250 lumens lasts 1.5 hours
That is a good option. I’m also looking into the Mateminko CSF03.
What model?
I use Vapcell 10440 @ 320mah 3A
Nice, I’ve heard a few people mention those and they seem like they have outstanding performance from what I hear.
@@PardonMyEnglish maybe all 10440 batteries are just the same.
“1.9V, yeah, not too bad” … if you want to start a fire! 😂
Every cell discharged under 2.5V is considered damaged, and not safe anymore to be charged again.
I was actually expecting it to be lower since I let it flicker for so long. You are right, though. That cell is a goner.