Feasibility of USB power out

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mamu

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My concern would be the stress level and drain on the batts if charging other devices while also vaping with it at the same time. I have no idea if that actually would be an issue or if the vv/vw regulator/converter itself would be affected as I haven't tested that in the power bank mods I've made as I blocked the output off so it wouldn't be used.

Also, if you're going to charge other devices, you're going to reduce the life span of the batts due to more frequent charging. Which means you're going to be replacing the batts sooner than if you didn't charge other devices with it.
 

asdaq

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asdaq

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That design is about three years old, and you could change some things as you see fit. Having a quick look the USB and one cap (two but one was not there) were removed and I suppose some LEDs for the charging display. If you piggyback the vaping circuit then all the charging circuit is still there, minus the LEDs, and if you can tolerate fixed voltage vaping, the slide switch and resistors can be left out. I quite like my 4050's set with a resistor between pins 3 & 4 to get below 5v output, and a favorite is 62K to get 4.43v. This is with no additional diode.
 

AttyPops

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IDK.....

What's the difference between
A) using a dedicated charger for the e-cig mod (but keeping USB power out like mentioned above)...
B) And simply using a 5 volt regulator and a USB connector wired properly. Say...a 2ish amp or even 3.0 amp 7805? It would have to be a stacked mod.

USB is just a 5 volt power source. Of course, it would have no "smarts" that way. Do the dedicated USB power packs have any brains behind them? (I apparently don't or I wouldn't ask or would look it up...but I'm being lazy). The regulator would have over-amp protection inherently.

Basically if you could use a 5v "wall wart" you could use a regulator. No?
 
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