Dennis, maybe it's worth to start a separate (development) thread for a sophisticated 8-bay analyzing charger made by Vapcell. What do you think? This thread here should better remain your promotion and advertising thread. ;-)
It's no secret that another manufacturer is doing a joint-development with a well-respected BLF member to launch a 4-bay analyzing charger to the market.
See all the information publicly available here:
https://budgetlightforum.com/t/-/57498
If I may add, the outcome of the feature list could be quite valuable to Vapcell, too. Lots of great ideas and thoughts that would be reasonable features in a battery charger.
If you are really interested to fulfill our flashoholics dreams, I would suggest to have some frequent mutual open communication with BLF, so we can talk about what can and cannot be realized and what milestones might be reasonable in terms of designing, testing and launching the new product. For instance, thorough testing will be a crucial point and so it might be a good idea to send some samples to skilled electrician experts like Henrik Jensen (HKJ) or BlueSwordM.
So, coming back to your question if there is such a device on the market yet: No, there is not actually. There are some nice 8-slot chargers but they all lack those great features that enthusiasts, battery experts and flashoholics have only found in some few 4-slot chargers like SkyRC's MC3000, Vapcell's S4+ or OPUS chargers. And still, even those few chargers deserve some minor improvements to become great.
Here's a list (not complete) of popular 8-slot chargers:
Xtar VC8
https://eu.nkon.nl/xtar-vc8-batterijlader.html
Efest LUC V8
https://eu.nkon.nl/efest-luc-v8-batterijlader.html
Efest Lush Q8
https://eu.nkon.nl/efest-lush-q8-batterijlader.html
Enova Gyrfalcon All-88 (can charge 8x 26650 at once!)
https://eu.nkon.nl/gyrfalcon-all-88.html
Miboxer C8 (tested by HKJ)
https://lygte-info.dk/review/Review%20Charger%20Miboxer%20C8%20Smart%20charger%20UK.html
DLYfull M8 (tested by HKJ)
https://lygte-info.dk/review/Review%20Charger%20Dlyfull%20M8%20Battery%20Charger%20UK.html
ISDT N8 (tested by HKJ)
https://lygte-info.dk/review/Review%20Charger%20ISDT%20N8%20UK.html
Efan Air M8 (tested by HKJ)
https://lygte-info.dk/review/Review%20Charger%20Efan%20Air%20M8%20Intelligent%20Charger%20UK.html