Pass Through voltages

[Craktskull]

Maybe it's the nomenclatures of things here that are different but I just ran across this comment in another New Member Forum post:

"A passthrough (no inline battery) will always provide higher voltage, at or near 5 volts depending on the source of the power."

I wondered about that as I have only 2 delivery systems. The eGo-T 650 mAh with the clear tanks and the stupid "plug in and wait till it's charged" charger (may actually be a real eGo-T), and another kit of dual 1100 mAh eGo-type batteries with the USB charging port (What they call over here as PT) on the base allowing you to have your tank screwed in and vaping while charging.

So, is a pass-through only a device where you bypass an inline battery? I'm just curious because I measured the voltage of the eGo-T 650 battery and it was, as expected 3.42V. The 1100 mAH battery (eGo style, only larger from China), however, measured 4.095V and 4.1V while plugged into the charger. There appears to be no possibility of removing the battery/ies from this device so is this still considered a passthrough device if I can plug it in and still vape even though there's an inline battery?

Paul

 

[cyberwolf]

Your eGo passthrough is still considered a passthrough device, but as you mentioned, it has an inline battery. Passthroughs come in both types. What is limiting your voltage in this case is not the inline battery, but the regulation inherent in the eGo switch. The circuit board in it is what limits the voltage to ~3.4v. There are newer "upgrade" batteries that allow unregulated battery voltage, in which case the limit will be closer to 4.2v, as determined by the inline battery.

In a battery-less passthrough, the voltage would be close to 5v, but the real limitation in that case is the amperage. Most power bricks and PCs do not supply enough amperage to drive an atomizer at 5v, or even 3.4v, for that matter. That's why the inline battery is a good thing in most cases; the battery is driving the atty, but the USB connection is keeping it topped off.

 

[Craktskull]

Thanks cyberwolf. Makes perfect sense. I have 10 more kits on order from China with 900mAh pass-through connections and will check them when they come in. Should also have around 4.2V while charging, I suspect.

 

[Speezix]

I just got an 1100mAh eGo style battery, it was sold as "Mini-USB Chargable", and it looks to be identical with every other 1100mAh pasthrough i've seen. I've gotten mediocre results with the cartomizers sold (Vapor Station), they don't list the ohm rating on their replacement tanks. I'm guessing it's in the 1.5-2ohm range. They work fine on my other 3.7v eGo batteries, but don't seem to be working the same on the passthrough. I've vaped it with and without the passthrough with no real good vapor production on either account. Could this battery be higher or lower than 3.7v? It was advertised as such. I have one 1.25 ohm carto from MadVapes to try next, to see if it will make a difference.

 

[alffalvo]

Your eGo passthrough is still considered a passthrough device, but as you mentioned, it has an inline battery. Passthroughs come in both types. What is limiting your voltage in this case is not the inline battery, but the regulation inherent in the eGo switch. The circuit board in it is what limits the voltage to ~3.4v. There are newer "upgrade" batteries that allow unregulated battery voltage, in which case the limit will be closer to 4.2v, as determined by the inline battery.

In a battery-less passthrough, the voltage would be close to 5v, but the real limitation in that case is the amperage. Most power bricks and PCs do not supply enough amperage to drive an atomizer at 5v, or even 3.4v, for that matter. That's why the inline battery is a good thing in most cases; the battery is driving the atty, but the USB connection is keeping it topped off.

Great info this helped me out also thanks

 

[LongHaul]

You can google pass through plans and find some out there and make your own it's fun and you will end up with a 5v pass through that will never go dead


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