Bartleby/box mod with a usb charger
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Good question and wish I too knew ... 100%.
I do know that once my Bartley charging light (red) goes off I'm getting better than 3.7v and more likely around 4.0-4.2v. But with usb in and button down, I'd have to say you're still running off the batt given the bit I know of the charging circuit that's used.
ADDITION: I did ask this same question of Janty for my JStick and they indicated it was always running off the batt - ubs plugged in or not.
I do know that once my Bartley charging light (red) goes off I'm getting better than 3.7v and more likely around 4.0-4.2v. But with usb in and button down, I'd have to say you're still running off the batt given the bit I know of the charging circuit that's used.
ADDITION: I did ask this same question of Janty for my JStick and they indicated it was always running off the batt - ubs plugged in or not.
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I have used a bartleby for many months and when plugged in to usb it seems to vape at 3.7 no matter batty or usb. I cant be sure but I have several 5v mods and this thing doesnt vape like a 5v on usb.. I assume it is only 3.7
To me, logic would dictate that if you are using a mod with a USB plug and a 3.7v battery then this would act exactly the same as one of those 3.7 volt battery in line PT's and vape at 3.7v also.
Thanks for the input. I was pretty sure that it was still vaping at 3.7v when plugged in because the vapor isn't really any warmer and I am still getting the same flavor and vapor amount. It doesn't matter to me either way. I purchased the bartleby expecting 3.7v and that's what I got and I am perfectly happy with it.
With the Bart you are ALWAYS vaping off of the battery. When plugged in, the charging circuitry tries to keep the battery "topped off", but you are still directly vaping off of battery voltage.
Yes, I have a Bartleby too, and really like it. I also have the 5v box mod that cybervex makes too. Awesome vape!
you are vaping at 4.2 volts actually. e-cig battery at full charge runs at 4.2 volts. so if your plugged in its constantly trying to achieve that number.
3.85V is about the most you are going to see out of a Bart into a typical atty, with a healthy 14500 and the charging circuit running background. Which is still MUCH better than you will see out of the typical non-mod PV battery.
take a multimeter to a charged battery any day. Tried it several times, full charge = 4.2
"Unloaded" battery voltage numbers are pretty much useless as far as I'm concerned. The "vaping" voltage number that I gave for the Bart is quite accurate.
This might be of interest to you:
http://www.e-cigarette-forum.com/forum/joye-510/65055-battery-voltages-surprise.html
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