For those not interested in charging standards, skip to the second quote.
Thanks for the comparison, lots of food for thought there.
I would not, however, put any stock in the above statement. Charging current really has little/noting to do with the source. I usually charge mine from a 3 Amp (potentially) source. It still charges a bit under .8 Amps typically. This rate is set by the charge controller in the Summit provided the source can support it. When plugged into a .5 Amp port, it simply charges slower because of that.
I would definitely stay away from 20 Volts unless you know more than I do. The typical USB charge controller blows up about seven Volts. If it didn't it'd blow up since it has to dissipate all the power drawn from the source that can't be dumped into the battery. At 5 Volts in and 4.2 out that's .8 volts times .8 Amps for a bit over half a Watt (.64). Raise that up to 20 Volts in and it's now 20-4.2 or 15.8 Volts times that same .8 Amps, we now have 12.64 instead, TWENTY TIMES. It was already running hot, this will melt it. At five Amps that becomes nearly 100 Watts inside that poor vape with nowhere to go.
OF
Take this with a grain of salt since the last time I had to deal with electricity this way was about ten years ago and this is based on
if they actually end up using the USB-C "Power Delivery" standard for charging. There's also two other versions (of type C) that are 5v 1.5a and another that's 5v 3a that do not fall under the PD standard. If the Summit is currently pulling 800mA at near 5v that's pretty much the extent of the 3.1 standard, which is 5v 900mA. Maybe they figure 5V 800mA is all it can take, or they are just conforming to the standard*. As you pointed out, computers usually don't put out more than 500mA though. I tried to find what the output of a computer that currently has USB-C is and I can't seem to find anything to compare.
I probably don't know more than you, so this is partly me musing about it and partly just digging up info that someone smarter can help understand. I did do some research on charging with USB-C since it is starting to be used with laptops. According to what I found, it looks like there is some sort of built in power management in the standard called, "Power Delivery". The circuitry for power management in the Summit, if using the Type C standard, wouldn't be the usual charging circuitry, but some sort of 'handshake' that tells the power source the Summit's charging needs. I only put the 20V 5A spec in there because it was so huge compared to the previous standard. Though, if what I am reading is correct, it looks like the bottom end on power for the USB-C standard is 7.5 watts. From what you said, The current unit only takes in about 4 watts(?). Obviously the 4 watt figure is still true since it goes from plain usb to usb-c with the current charging cable.
Here's a little thing that I found on this subject,
http://literature.cdn.keysight.com/litweb/pdf/5992-1394EN.pdf?id=2741173
There's probably a better source, TI has info on it, but this seems like more plain language.
I also found this,
http://www.st.com/content/ccc/resou...ntent/translations/en.APEC_2016_USB_Power.pdf I didn't really read all that much of it, but it does go over some of the power supply circuitry if it is what I think it is.
*I got to reading around charging these and there are amperage limits for these thing apparently(?). I don't know what kind of battery is in this unit, but a regular 18650 won't take over 1 amp without shortening the life of the battery. Maybe. Does anyone know what battery is in the Summit? If this is true, then all that stuff about type c charging will not apply to the Summit at all.
••Well, after looking at how Li-ion batteries are charged, it looks like the voltage is all that really matters? And that the amperage will affect the charge rate, but not as much as I thought. I may be reading it wrong, but if there are two cells you could use a higher voltage?
TL;DR: I write too much about things that I am just making guesses at. It's fun to fantasize sometimes.
Anyway, thanks again. For now I'm too happy with mine to replace it, but.......
If I were to do it all over again and I had a choice between a $100 mark 1 and the plus at it's current price, I would go for the plus. If my original unit were still good, I probably wouldn't. Then again, I don't really sell things often, but if I sold my original, I'd probably get it. I didn't have any complaints about how well the mark 1 worked in terms of heating up, maintaining temp, etc, it's just that the case didn't hold up.
Oh yeah, I did have a sesh last night and it was pretty good. I started using one of the grinders that I got from PIU and it works really well for the Air since it doesn't grind too fine, not so with the Summit. I had been using a different grinder when I just had the Summit and it seems like I used to get more vapor that way with the Summit then I did yesterday.
That built in stir tool is more awesome than I thought it would be. I used to carry a screw with me and it's a pain in the ass to remember it and it's not great in the pocket either. Also the app did seem gimmicky, but I like that I can see the temps, Previously I ended up vaping at too high of temps since I was looking for cloud-ish exhales and it doesn't usually do this under a certain temp. It isn't difficult to stick to a color, but still, it seems to help me to see the temp for some reason. That boost button is funny though, you could just adjust the temp normally, but if you are in a hurry I guess it might make sense? Another thing about the app that I think that I will end up using is the session timer. It could be a good reminder to stir if I can figure out the right amount of time that takes.
Can anyone explain to me why Vapium put that red rubber seal where the mouthpiece goes into the unit? Obviously it does no harm, but the previous method worked fine for me, no escaped vapor as far as I remember.
As for the suits comment, that is deffo true. My brother in law works in software and you know that running joke in the Dilbert strip about the salespeople selling features that don't exist? It's for real.