My Vapcell S4+ Analyzing Charger photos and observations

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tatasal
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[quote=tcc]

Dug a little deeper and found this.  So it seems ok (Doh)

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Jimo
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Ok thats good, keep in mind what I told you about the charger, its very sensitive to how batteries are put in bays

Jimo

tcc
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Jimo wrote:
Ok thats good, keep in mind what I told you about the charger, its very sensitive to how batteries are put in bays

Will do.

Thanks for the tip.

tatasal
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Jimo wrote:
Ok thats good, keep in mind what I told you about the charger, its very sensitive to how batteries are put in bays

All analyzing charger/discharger that has SLIDING RAILS to accomodate different battery lenghts has this inherent drawback, of which since the negative contacts of the rails are not fixed and are spring-loaded, it has this drawback of a very possible different IR readings depending on the physical contact on how the rails get in contact with the (-) side of the batteries, and even with the (+) side, though in a much lesser degree.

I mitigate this inherent drawback with the sliding rails by at first wiping the (+) and (-) ends of the charger AND the cell, then when the cell is already put its place, I push the sliding negative rail contact towards the the front AND at the same time rolling the cell in the bay, hoping for a more stable physical contact.

The lowest reading after two or more tries gets me more or less near the ball park of the correct IR, but nowhere near the correct reading of a laboratory-grade, hundred to a thousand dollar IR measuring tool.

Jimo
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Yes I agree, but the Vapecell charger seems to be much more sensitive than my eastshine or the xstar dragon

Jimo

hodor
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Just got an updated version. The voltage always shows 4.2V when charging regardless of capacity (percentage seems to work correctly). Is this a known bug/feature?

BurningPlayd0h
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hodor wrote:
Just got an updated version. The voltage always shows 4.2V when charging regardless of capacity (percentage seems to work correctly). Is this a known bug/feature?

Check it again when you first put the cells in, if charging at higher current the charging load will increase cell voltage and read 4.2V for like… the top 1/4 of the charge cycle.

If working properly you’ll see voltage steady at 4.2V for quite a while but charging current progressively getting lower as the cell gets closer to fully charged.

hodor
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Hmm, ok. I’ve only tried partially depleted cells and yes they do show a lower (actual) voltage on load but as soon as charging starts it jumps to 4.2V and charging current does get progressively lower (so in line with your comments). It’s not something I remember reading about and seems kinda odd, all the other chargers I’ve had report the actual cell voltage during charge, regardless of progress. Not a big deal, just an observation I haven’t seen mentioned.

BurningPlayd0h
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hodor wrote:
Hmm, ok. I’ve only tried partially depleted cells and yes they do show a lower (actual) voltage on load but as soon as charging starts it jumps to 4.2V and charging current does get progressively lower (so in line with your comments). It’s not something I remember reading about and seems kinda odd, all the other chargers I’ve had report the actual cell voltage during charge, regardless of progress. Not a big deal, just an observation I haven’t seen mentioned.

I could be wrong, but from my understanding those other chargers are estimating/adjusting the voltage reading much like how the “charge percentage” works on most chargers, whereas the S4+ is reporting true voltage reading.

Jimo
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Thats probably true. But I can only comment on the charges I have had experience with. The xstar dragon plus which I don’t have anymore, And the eastshine charges are nowhere near as sensitive as my Vapcell. Don’t get me wrong I like the Vapcell but it is sensitive.

Jimo

akula88
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I received my S4+ last week and had been doing a number of capacity test. Also played around with the ‘Manual’ and ‘Auto’ mode. Personally, the ‘Manual’ mode give you better flexibility.

I noticed my unit that doing the capacity test, the display does not turn off, and remains lighted throughout the process.

Is this normal?

Also — someone commented that there are ‘updates’ since it’s first release. How do we know which version or date of manufacture for our unit?

Lux-Perpetua
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If your display remains on, you got the updated revision. In order to turn off the display, hold the button "DISPLAY" pressed for 2-3 seconds.

Check here for some more information: Wink

https://budgetlightforum.com/comment/1676862#comment-1676862

Overmind
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I think there’s no hardware limitation when discharging. All 4 slots should work at 1A.
This may be by-passable in manual mode.
Some additional cooling should compensate.

d_t_a
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Overmind wrote:
I think there’s no hardware limitation when discharging. All 4 slots should work at 1A. This may be by-passable in manual mode. Some additional cooling should compensate.

From what I know, the inner 2 slots of the Vapcell S4 Plus (either the older firmware or the new firmware) is still (software) limited to 0.5A discharge current, even when doing discharge function manually.
I’m not sure if it’s possible to change the firmware to bypass this limit.. But additional cooling may be needed. (the Liitokala Lii-600 which can do 4× 0.75A discharging gets quite hot, since it also doesn’t have a cooling fan).

TimMc
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Inner two slots lack heatsinks. Slot 1 and 4 have heatsinks near the top.

hodor
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Anyone else experience the charger loosing power / turning off by itself during charging?

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