I like the single (per cell) beep for the same reason as Henk4U2. I don’t have to get up and look at the charger to see if it is finished its task, as mine too in most often not in my line of sight but is close for me to hear. One beep is fine. Continuous would be terrible.
I prefer the unit as is, though if it was possible to select via firmware that would be fine too.
Does it have Bluetooth like the other chargers?
Or how can i update the firmware?
I like the ringtone/beep. Maybe you could add another mode called “Night Mode” or something for the people who don’t want to be disturbed by beeping.
Don’t see the point of a ring tone. Especially when you have all day to charge. However, a ring tone for inserting the battery in backwards might be nice. Can’t tell you how many times I’ve put a battery in a charger backwards, only to find out later when I needed it, it never charged.
"Ring tone"? It would be nice to set the "ring tone" to The Nile Song, or The Immigrant Song or Babe I'm Gonna Leave You, or Rainbow In The Dark.
If by "ring tone" what is meant is the electronic beep sound, there should be an option to disable it. Or change the ring tone to a different sound. I bought four Vapcell S4 Plus chargers, one for each room, no more running around looking for it in the other room.
I prefer an audible alert to a battery reaching termination.
Thank you for your advice,
Thanks
Thank you for your suggestion. We need to communicate with software engineers
If there is no battery in the slot, a bell will ring when the power is turned on
Please confirm
Nope.
Edit: Now I’m curious. I’m not very knowledgeable about electronics but I’ll open the charger and see if there’s something obvious wrong.
When I had my S4+, the ring tone at the end of charging was the most annoying thing about the charger, especially at night. Since the charger doesn’t have a date / time / timezone setting, having a DND mode will be difficult, maybe a switch to allow people to turn it off. None of my other chargers ring when charging complete, and they work just fine.
BTW, my S4+ self-combusted when charging a cell (which I charged later on another charger just fine), so for those folks who own it, don’t keep it close to combustible material.
Mine doesn’t do this either. I got mine from 18650batterystore. It actually seems to analyze the current state of batteries faster than my brothers and his has the ringtone when the devices starts while mine does not.
Good ideal 
The Opus’ LCD display can be made permanently On when the Display button is pressed continually for 3 seconds.
Perhaps the S4 can also learn from this method, either for the end-of-charge Alarm, and even for the Display light. No mold change or additional side buttons that increase cost.
S4 + new version V2.0, you can also press the DISPLAY button 3 seconds to turn off the LCD,
We are receiving suggestions
I know the improved S4+ already has this 3-sec feature on the Display…perhaps find a similar way for the Alarm too.
I also like having a tone to signify charge completion.
Although an option (maybe some button press to disable the sound) would be nice too.
(for comparison: the Xtar VP4 Dragon has an option to enable/disable the sound, this is done by doing a double-click of one of the buttons)
Very nice way to exercise the option and very “implementable” for Vapcell.
Personally I like the audible alert. Like some others have said, this charger doesn’t sit on my desk, it’s usually on my kitchen counter or somewhere a few feet away in another room so I find it useful since I don’t have to continuously get up to check on it.
While we’re talking about updates will this thing ever get a proper ‘storage’ charge mode? I find that much more useful than the wonky cap test mode that I rarely use.