XTAR kindly sent the VC8S for review.
The VC8S allows all eight slots to be used for Store and Grade mode.
I found that 26800 cells fit (81.1mm) despite the charger being able to support 30mm to 80mm long cells.
Here is my basic review where I have noted down some observations:
One thing I noticed on my VC8 Plus, was that charging lithium batteries would show the current fluctuating within a range on the display, like it was oscillating.
Did you notice anything like this in the display, or in your measurements of the CC phase? In contrast, my S4 V3 current is very stable (at whatever current you select), and then at 4.20V starts to slowly decline by 10mA until it reaches about 100mA if I recall correctly.
All this with keeping the protective film on the display… 
Nice review!
Sorry to hijack this thread, just had a matching chart at hand. 
My review of the VC8S isn’t finished yet and will be released in a couple of days.
Yes, I was able to see this on the display and in my measurements.
This is awesome @SammysHP … looking forward to your review and discussion of this phenomenon.
Ha ha! I will end up scratching the display if I take the protective film off. 
Nice! Did you measure the input with a USB Meter?
I haven’t taken measurements and created graphs. 
Thanks TimMc for your very informative review.
Just want to confirm: We don’t need to buy the 45W adapter (which costs another US$20). Can plug the Xtar VC8S to any high-powered charger that we already have. And it will charge normally (?).
You don’t need to buy the XTAR 45W adapter. You could use your own adapter.
USB-C PD 45W (15V 3A) or higher is recommended.
If you use QC3 18W (9V 2A) then the XTAR VC8S will be limited to 1x 3A, 2x 1.6A, 4x 0.8A, 8x 0.4A.
If you use USB-C PD 45W or higher then the XTAR VC8S can do 2x 3A, 4x 2A, 8x 1A.
I’m using a PinePower Desktop USB-C PD 65W port to provide power to the XTAR VC8S.
Thanks again TimMc for your kind response.
Will order one Xtar VC8S (without the adapter) from its store on Ali Express soon.
Best wishes of good health and happiness in the New Year of the Dragon in 2024 to you and all friends on this BLF.
No, that’s right from the battery with a current shunt.
Happy new Year Tim
Very nice review!
So for the NiMh is not possible to set current? XTAR WHY?
Unfortunately, that’s correct.
Ni-MH cells will charge at 120mA during the detection phase and then the charger will switch to 500mA. There’s no manual current selection for Ni-MH cells on the XTAR VC8S.
I can click “Curr.” and it will show 3000mA, 2000mA, 1000mA, 500mA, 250mA. But the current will remain at 500mA.
Yes it’s in the manual…is fixed to 500mA. It’s not a big problem but I don’t like.
Another question… It charge with different current in the the four left slots or if you select 1000mA for example is for all 4 slots?
The charging current is selected for all four slots.
It would be better if you could select the current for each slot like the Vapcell S4+.
Mumble mumble… this is the final info for not purchasing it for now.
I have the VP1 and is the best charger for lithium battery. Xtar is a very good brand. I hope for the future they do a model like SkyRc MC3000 with 26800 support
Thanks for the review. Looks like a good option for charging up to 8 batteries at once.
I agree
500 mA is way too high for NiMH batteries. Even 250 mA is too high. Manuals for AA eneloops and other NiMH say to charge them around 85-90 mA maximum for the best cell life and capacity, especially for 900 mA AAA. I found my AAA laddas got pretty warm at 250 mA.
Absolutely not! Charging them at around 0.5C is much better for their health because it allows proper termination. That’s about 1000mA for the AA and 500mA for the AAA. The very low current is meant for dumb chargers that never stop charging (but that will damage the batteries). The batteries also don’t get hot (except at the end, which is absolutely normal and not a problem).