P.S. Just switched to a Yocan Ziva 2.0. The magnetic connector on the Uni can sometimes come unseated, and this resets the puff timer, so I sometimes either cut a session short, of stop completely as I do not know how much I've taken. When I doubt, I abort. The ziva is a screw in and it has an ''auto'' mode, where it just blows the vapour out continuously. You can fire 20 seconds of it into a holding vessel and then take it all in at once. Magnificent.
In fact I just wrote to Yocan with the folowing idea / request: I had to stop short of telling them it's specifically for deems.
Hello Yocan team,
I’m a longtime user of many Yocan devices, including several Uni 3.0, a few Kodos, two Orbit units, and I recently ordered the Ziva 2.0.
I wanted to share a feature-set idea that I think could genuinely differentiate a future “smart” battery platform, setting it apart from all the competition.
What many advanced users actually want is not more gimmicks or cloud production, but more precision, consistency, and repeatability. A scientific instrument geared towards research and logging of exact numbers, times, voltages, and trends.
The ideal platform, in my opinion, would include:
- Direct screw-in cart connection (no magnetic adapter)
- Protected/internal cart body
- No direct mouth contact with the cart itself (better cleanliness and leak protection)
- Large front facing OLED display
- Large, easy-to-read timer numbers
- Button activation
- Precision voltage control
- Precise real time impedance
- Live puff timer that stays on screen until the next puff.
- Data log of last 10 puffs with voltage and puff times
- User-programmable puff duration cutoff
Example:
- set device to 8 seconds
- set voltage to 2.7V
- hit button
- battery automatically stops firing at exactly 8 seconds
Another extremely useful feature, as mentioned, would be puff history memory:
Ability to review the last 10 pulls:
- duration
- voltage used
- timestamp/session order
A possible “nice to have” feature could also be optional cart identification memory:
Example:
- Cart A / Cart B / XYZ etc.
- battery remembers total pulls and session history associated with that specific cart
Many experienced users care less about cute animal shapes and more about repeatable session consistency, precise thermal delivery, and long-term comparison between sessions and hardware setups. Advanced users will often weigh their carts before and after sessions to calculate total intake and allow precise notes and logs. Especially users that created their own mixes and juices. This helps to know what the total pull time on a specific cart was at specific voltages, ability to compare delivery by voltage and puff times, accurately determine intake in mg per second, etc. In short, a scientific delivery device. Something for the data nerds out there (like me!), and marketed as such.
Large display numbers would also be very helpful, since users may want to quickly read the timer during an immersive session without needing to focus on tiny text or menus. Not a display with nice animations, but one that is data heavy and easy to read.
The Ziva 2.0 especially caught my attention because it seems to move toward a more stable and controlled architecture compared to magnetic connector systems like the Uni; that can be knocked off-seat, and reset the timers, etc. The auto mode on the Ziva 2.0 is also a very interesting idea — combined with a programmable timer cutoff, it already feels halfway toward controlled timed-session functionality.
Your products already have:
- Large OLED displays (like the Uni 3.0)
- timers
- smart chipsets
- telemetry
- concealed cart systems (like the Ziva)
So this feels like a natural evolution of the platform.
I think there is a real niche for a precision-oriented field instrument focused on serious session consistency, repeatability, testing, and comparison rather than novelty features or cloud production.
If Yocan ever explored a platform like this, I would gladly be available to provide testing feedback, user experience comments, and real-world usage observations.
Thanks for making great devices and for considering the idea.
I would love if they made this. It's what Deemers need.
Q