Oh, I know what you mean by thatā¦ for the screen goes completely dark when it goes off, perhaps the trade-off of this type of screen display compared to the usual low-contrast LCD yet permanently ON display that is back-lighted when turned-onā¦ā¦it does rely on the beep.
A led for each slot when the screen goes completely off is a nice touch I agree.
Would like to try out this charger. Looks promising, especially since very few charges can do discharge test @ 1A (SkyRC MC3000 can do it, the Opus BT-C3100 theoretically does it too, but by without modification, the Opus gets hot when discharging at 1A and will pause discharging, and then show incorrect too high ādischargedā capacity).
On the Lii-500S, the display screen backlight also switches off automatically pretty fast, even while charging, making it difficult to read the charging display information. However, there is an undocumented keypress not mentioned in the manual, which can make the screen can be forced to be Always-ON (will not automatically switch off). Does the Vapcell S4+ have something similar (force display to be Always-ON)?
Pardon me, but Iāve read the manual of my BT-C3100 V2.1. And also I have pushed some buttons repeatedly.
But there is nothing that suggests my charger is agreeing to switch the back-light on permanently.
On is it maybe something introduced in the V2.2 model?
I just checked my 2.2ās manual and it states 3 seconds in factā¦you are probably right, though I have had the 2.0, 2.1 and now the 2.2, most probably it only began in the 2.2 version.
I hear you. The @#$% auto turn off with electronics stuff of nowadays can be very annoying. As an example, try to use a modern multimeter like the Bside ZT102 or Aneng 8002 (Zotek ZT102 both) to monitor some voltage, for example. Every @#$% 14 - 15 minutes it wll make an alarm noise :facepalm: and then shut off. Not only it forces you to āresetā the @#$%ing thing by rotating the switch back and forth every few minutes, they had the brilliant idea of fright pestering you with a beeping alarm while you are doing something else. Now, if you could somehow disable such a power saving vendetta, I could be fine. But grrr with all these flexibility crippling āmeasuresā trying to save on the parrot's chocolate. :-|
I usually find your always spectacular rands rather exaggerated Barkuti (but everyone has their personal style :party: ), but on this particular point I could not more agree with both the content and wording of your post, I hate auto-turnoff on almost everything, and particularly displays that decide to switch off on their own :confounded:
As always, thanks for your extensive and informative review!
I just got my Vapcell S4+ and my wife has banished it. Itās power adapter is emitting a very audible and annoying 5700 Hz whine. Does yours do this? Is it because itās an inferior power supply? Or is it possibly defective?
Itās called Spectroid. Itās the first time Iāve ever used it. I canāt speak for itās accuracy, but it does represent what Iām hearing.
I thought about that. I need to dig around and see if I can find a similar one lying around from LED strip installs or something. Sure, I can replace it but it feels like that shouldnāt be necessary on a brand new device
That is fairly common on modern switch mode supplies. The actual switching is way above the audible range, but there often is a regulation running at a lower frequency, usually the sound will vary with the load on the supply and often only be audible at certain loads.
The solution is either to use another supply or place the supply out of hearing range (Wrapping it in sound isolating stuff is a bad idea, it need cooling).
So this sounds like a very good charger, for 18650 ,21700 and some envelopes. This or a skrc? I love my klarus single cell charger, miboxer c4 new two button has been replaced already so I donāt trust it. Charge , test, discharg.
Iāve been meaning to test out this Vapcell S4 Plus charger for a very long time, but was only able to order one at a reasonably good price lately, and coupled with worldwide lockdown situation, my order arrived 4 months after I purchased it (ordered Feb 2020, arrived June 2020).
I havenāt gotten to test all the functions yet, and am perusing the manual, but some details (eg. discharge current) doesnāt seem that clear to me.
I have some questions:
regarding ācapacity testā mode: what is the discharge current used?
(I understand that slot #1 & #4 max discharge current is 1A and slots #2 & #3 max is 0.5A)
does discharge current depend on the selected charging current (when āmanualā mode)?
or is it automatically set to 1A or 500mA or is it it based on some other parameter (eg. IR)?