I ran the one I had down and out it outside in the charcoal grill for safekeeping. I’m going to drop it off for recycling if I can remember to take it with me next time I go somewhere that recycles them.
Doing the same as we speak. Luckily, I only own a single H10. Letting it run down in a Convoy T8 SFT40 3000K, and once it hits LVP, it’s going in a bag for e-wasting.
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Yeah, I just don’t think it’s worth the risk to keep it.
What would be a good substitute for the H10 available at nkon?
Most 14500 that I know don’t like high currents, that’s why I have around 10 H10’s here.
Nothing at the moment, they’ll probably have the K10 at some point, you can ask them if they plan to offer it, usually they answer these questions.
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Mine had a button.
Illumn and LiIon wholesale are offering refunds on H10 batteries
Convoy might be also..
some people are reporting their H10 cells develop fast self discharge after several weeks of normal use
suggest you get rid of all H10’s purchased since around May or June 2025, both button top and flat top are implicated..
suggest you contact your seller directly
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I recycled all 3 H10’s I received from Convoy over the summer. Thankfully Simon was top notch and sent out three replacement K10’s.
Pretty disappointed with vapcell and won’t purchase anything else of theirs.
I purchased 3 Vapcell H10 from Convoy in this August and October, but they don’t have any problem so far. Even if it has a problem, I would discard it without asking for refund.
If these cells were bought from 18650batterystore they would say since the cells were ordered over 30 days there are no refunds even with defects like this. Marlene from there told me that verbatim based on 3 EVE 18650 cells I showed developed some leaking issue despite never being used. They were all in the original box, in the 2 cell clamshell cases.
Strange thing is I placed a new order (12/14/25) a couple of days before I saw this issue with these older cells I bought almost 2 years from today exactly. She told me to check all the cells (of this new 12/14/25 order) and returns are ONLY within 30 days, but how many cells develop problems that soon? What happens 3 months from now if these new EVE 18650 flattop cells I just bought develop problems or show themselves to be defective? I’d be SOL is what I would be.
I just found a newish H10 that was completely dead and would not charge. Unfortunately I have no idea where I bought it. 
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I’ve only sorta been following this Vapcell H10 thing, but all of my H10 batteries were purchased in 2022-24 and they’re all fine.
I need to get some more 14500s anyway, but I’m waiting on new battery recommendations. I don’t know whether or not to trust the “new” Vapcell K10 8A. I am under the impression that Vapcell does not manufacture, and they only rewrap and resell batteries.
I just don’t wanna get the K10s and them have the same problem. I hope everyone that does have or has had the H10 problems stays safe. These batteries are no joke.
My Vapcel H10 are about 4 months old. No sign of overcharge, nor heat, nor spontaneous discharge.
They are cheap so getting rid of them is no problem. OTOH I like to keep them to test my lights for their high current capability, which no battery on market could match at the present time? (Pls correct me as needed.)
The question is would it be safer to store them in my flashlights versus in plastic box, open air, etc? In hope the metallic and air tight lights would better contain any heat/fire event?
A fireproof container of some sort would be best if you need to keep them inside. That could be a metal box or one of those fireproof bags that are out there. Inside a flashlight in one of those containers would help.
It would be best to store them at a “storage” voltage of 3.3/3.6V.
I would charge slow at 0.5a and not go above 4.05V. Monitor temperatures closely while charging.
Don’t discharge below 3.3V.
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I had an H10 self-destruct some time this year or last year. I forget exactly when.
It was a fairly new cell at the time. While it wasn’t hooked up to anything it suddenly got very hot. Too hot to touch.
Fortunately, it didn’t catch fire. However, after that event it read zero voltage and putting it on the charger did nothing. I think the protection disk separated inside the cell permanently disabling the it.
To the best of my knowledge, those"fireproof" bags are useless but don’t take my word for it.
bought 4 from ilumn back at the end of July. 1 showed self-discharging issues right away, and then I had another one start recently. The other 2 seem fine but I think I’m going to discard them anyway.
Really not worth starting another thread re self draining batteries. This proprietary battery from Acebeam has been replaced by the company so no problem there. But I thought it was the big Acebeam P20 that was drawing a bit.
To test, I fully charged this battery a couple of months ago and it hasn’t been used or stored in the light. Can’t take a pic and hold the probes, but it reads a totally flat 0.00V.
The fact it also looks like a stick of dynamite makes it more of a worry. 
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There was a long thread, on the other forum, many years ago when Li-ion chemistry was in its infancy, about vent holes in the body of sealed lights to release the pressure should a cell fail.
Personally, I tend to store cells out of lights for organisation and also to keep an eye on them.
Hypothetically, “best” storage would be away from combustible materials, in a cool and dry place, with sufficient distance between the cells to avoid a chain reaction.
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Who is the manufacturer of this battery? And is it still the same or have they changed it compared to the previous Vapecell H10?