As we reported 3 months ago, Hilti is launching a new 22V “flash charging” Nuron cordless power tool battery, B22-260.
See: Hilti Nuron Flash Battery – First Look
Aside from an initial teaser, Hilti has not yet provided any details about how or why this new Nuron battery charges faster, or the type of Li-ion battery tech it uses.
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From the case aesthetics, I am led to assume it uses pouch-style battery cells rather than the latest high performance tabless-style Li-ion battery cells, but that has not yet been confirmed.
It’s also unclear whether this battery requires special chargers to achieve Hilti’s fast-charging claims.
Without any concrete details, I took to Google to see if there were any updates.
According to Google’s AI Overview, the new Hilti B22-260 flash-charging Nuron 22V cordless power tool battery is indeed “optimized” for special chargers.
But they also say this Hilti Nuron battery has a charge capacity of 2.6Ah.
2.6Ah?
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That doesn’t sound right.
Hilti has a bunch of new batteries, including 9Ah and 13.5Ah batteries.
The new flash-charging battery looks to be around the same size as their 18-cell batteries.
A 2.6Ah charge capacity for the new Hilti Nuron Flash-charging battery seems too low and woefully inaccurate.
That’s the problem with AI – it’s always highly confident even if it’s factually wrong. Or maybe it’s right and this new Hilti 22V battery really does have a 2.6Ah flash-charging battery, but I cannot imagine that being true.
I know the 2.6Ah charge capacity claim must be inaccurate, but I also don’t have any official information from Hilti.
I asked Hilti USA for clarity but have not yet heard back.
Update 1/19/26: Hilti has said they are not yet able to answer questions about the battery specs or technology.
TomD
Sounds like it “thinks” 260 in the part number is 2.60Ah.
Big Richard
It’s close, the 260 is Wh. Or at least close to it, its actually 251 Wh but they tend to round the numbers but that second number is its Wh rating. It’s funny because it is actually a lower capacity than the B22-255.
B22-55 = 54.0 Wh
B22-84 = 85.32 Wh
B22-100 = 97.2 Wh
B22-110 = 110.16 Wh
B22-170 = 170.65 Wh
B22-195 = 194.4 Wh
B22-255 = 255.96 Wh
B22-260 = 251 Wh (pouch cells)
B22-290 = 291.6 Wh
Big Richard
EDIT: B22-85 = 85.32 Wh
Stuart_T
As Abe Lincoln said, “Don’t believe everything you read on the internet.”
kman
I wonder if you can ask the AI about its confidence level (As a percentage) that it is indeed 2.6 amp hours. Would it think that all its information is 100% accurate or would it be intelligent enough to know its not always right and assign a realistic value generally or a specific value for this particular question. I think AI has a long way to go but it has already proven the ability to solve complex problems. Give it some time and maybe these types of issues will go away. If we can easily see the issues now why wouldn’t we be able to improve and eliminate them over time? I do think its overrated and overused considering current capabilities but if you anticipate the future it probably will be incredibly capable.
Bonnie
AI isn’t going to give you that actual information if it even tracks it in a useful way for that particular token. It might give you a number though, because it’s entire job is to write text that *appears* correct.
MM
I saw a Youtube video a few weeks ago from a media event in which the Hilti rep explained that the first number on the battery (22) is the nominal voltage, while the second is its ‘total energy capacity’, presumably in watt-hours:
https://www.youtube.com/shorts/VpFOmKhac-8
For example, take the 22-290, which is supposedly 13.5 ah. 22×13.5 = 297.
If that approximation holds we should expect the 22-260 to be in the ballpark of 11-12 ah.
I haven’t figured out what kind of cells are inside it, but pouch would explain the geometric design on the exterior of the pack, as well as the impressive performance numbers.
Nathan
Is it possible they are making a lower capacity battery to have a very rapid charge item? But it 2.6ah does seem a bit low in the scheme of the family. 5.4 maybe more sense.
CMF
First off, I am not a battery guru, but could it mean that it has a capacity to charge 2.6 amps/hour? (which does not sound very fast)
Second, re-ask the question and then ask what you did above, how it does not sound likely and the bigger battery offerings. Usually it will come back and say “nice catch” or something along those lines and come up with (hopefully) the correct answer.
Stuart
This was from a Google search overview. AI mode then spit out the same.
CMF
Yes but somewhere below it usually has a button, go into AI mode, or something like that. When you click it, it will give a more in depth answer, possibly with the same answer. But from there, as long as you don’t close the tab, you can ask it to clarify or anything based on its answer, even a week later as long as that tab remains open. You can go back and forth dialogue for weeks on the same topic.
Tim B.
Unfortunately, AI is only as good as the data it ingests… which in this case, isn’t particularly explanatory. I did some digging to see if I could find out any sort of technical detail regarding Hilti’s charging methodology, and couldn’t really find anything. Not even real numbers for charge times on various capacities.
Now, that said… I have to wonder if maybe they have done something design-wise that is more similar to some of the ultra-high-speed charging methods used by some cell phones (Like the SuperVOOC standard) which uses an entirely different configuration of the cell to allow very high speed charging, but also does technically change the way effective capacities and such are calculated….
CMF
So true, but it can check for pages we never see or overlook because they are obscure or not well known, and saves me a gazillion minutes of searching
Jared
Just for comparison, I asked ChatGPT 5.2 “thinking”:
Capacity / “260” meaning: Hilti’s Nuron naming strongly suggests the second number is approximate energy (Wh) (e.g., B22-290 ≈ 22V × 13.5Ah ≈ 297Wh), so “260” is most plausibly ~260Wh (≈12Ah at 22V) rather than 2.6Ah.
Fast-charge speed (in Ah/current): If B22-260 ≈ 12Ah and the claim is ~80% in ~20 min, that’s ~9.6Ah in 0.33h → ~29A average charge current into the pack (likely peaking higher before tapering).
CMF
Chat GPT I like the best, better than Google (one of the weaker ones, and tried Anthropic Claude (average). GPT isn’t perfect but easily, for me, the best I’ve tried. Jared, you mention GPT 5.2; are you subscribed?
Jared
Yeah I pay for it. I’m not sure if you can access all the models and modes using the free version. “Thinking” model in “extended” mode gets most of my attention.
CMF
What does it cost you monthly, CDN? Are there higher and/or lower packages? For now, free is fine, but somewhere down the road I might subscribe as I am using AI more and more as time goes on. Very useful tool.
Jared
$29.94 with tax. There’s a pro version too apparently, but I haven’t tried that. I don’t know of it’s different or if you get more of the otherwise limited “research” queries.
I use it for work and it saves a lot of time – easy for me to justify in that context.
If you’re not getting useful answers, try arguing with it, telling it a correct answer is really important or will cost a lot of money if it’s wrong. Don’t just take the first response to your query. Then instruct it to learn and do better next time.
Alex
Like KMR said below, if tou ask Google Gemini 3.0 pro, you get a good detailed answer.
It’s unfair to compare GPT 5.2 with a low-end google model and then call google weak. It’s like comparing towing capacity between ford and gm then using a gm pickup and ford focus and declaring GM is superior… (or in this context, using a 1.2ah dewalt battery and comparing to a milwaukee tabless battery might br a better comparison)
KMR
To be fair, I think this post highlights a problem with how AI Is being introduced to the public and integrated into existing platforms. There needs to be congruence in the output of the free and paid AI models. It does Google no good, or AI in general, to have a discrepancy in the output of the broad AI summaries include in search results and the output of their premium paid models. This is one of the reasons that such a large segment of the public broadly maligns AI.
Stuart
Here’s the problem:
There is no official (or unofficial) source. AI will answer confidently, even if it has to guess or make up an answer.
I’ve been seeing this a lot. There’s a tendency for AI to agree with me based on the tone of my query, and then completely contradicting itself if the tone of my next query is flipped in the opposite direction.
In this case, it produces facts where such facts don’t exist in any published documentation. So are they really facts or guesses? And if a guess, shouldn’t the info have qualifiers rather than being presented as fact?
Jared
You can tell your AI to do a lot of different things.
I often:
– instruct it to ask me questions before answering if it requires more information to give a better answer.
– specify what sources of information it needs to review or consider before answering.
– ask it if there’s anything I may have forgotten or not be aware of.
– preload the chat with documents I want the AI to know when responding.
– ask it to fact-check my answer and tell me if anything is wrong.
– instruct it to provide citations so I can verify the answers myself.
What KMR said makes a lot of sense to me. None of what I’m describing relates to the AI-summary for google searches or Rufus information in Amazon listings. Those may be “AI” generated, but the product and methods I’m using seem very dissimilar.
KMR
This is a very similar answer to what you get when you ask Google’s Gemini 3 Pro:
My Prompt:
“What is the capacity of Hilti’s B22-260 Nuron battery?”
Gemini 3 Pro’s Response:
“The Hilti B 22-260 Nuron battery has a capacity of 260 Watt-hours (Wh).
For the Nuron platform, which operates at a nominal voltage of 21.6V, this translates to approximately 12.0 Amp-hours (Ah).
Key Details:
Naming Convention: Hilti Nuron battery model numbers directly indicate their energy capacity in Watt-hours (e.g., the B 22-85 is 85Wh, the B 22-170 is 170Wh).
Flash Charging: The B 22-260 is specifically marketed as a “Flash Battery.” It features specialized cell technology allowing it to charge significantly faster (up to 80% in roughly 20 minutes) when paired with the C 8D/DC-22 Dual Bay Flash Charger.
Compatibility: Like other Nuron batteries, it is compatible with all Hilti Nuron 22V tools, though it is optimized for high-demand tools that benefit from sustained high power delivery.”
Stuart
It’s still all AI fabrications and guessing.
Hilti USA has not published official details and said they cannot answer anyone’s questions yet.
Big Richard
They have though. It is officially a 251 Wh pouch cell based battery as I mentioned in an above reply. It has been in their safety data sheets as of Oct2025. Not sure if it will like this link:
https://productdata.hilti.com/APQ_HC_RAW/IBD_WWI-00000000000006757271_000.pdf
Stuart
Great find! As for the link, I truncated everything after the .pdf, which is typically unnecessary tracking info.