VX2 manual battery ratings...

[The Doc]

For those who might be curious as to the electrical ratings of the VX2 manual battery, here is some technical data for you. The cell measures about 4mm x 80mm and is marked as 0.67Wh, which logically has to be a Watt hour rating. Here in North America, we generally rate batteries in terms of milliamp hours or Amp hours. To convert the watt hours to Ampere hours, we simply maintain that in the world of DC current, Volts x Amps = Watts. Therefore, 0.67W DEVIDED BY 3.7VDC = 181mA. So I think we can round it off and safely say that the stock VX2 manual battery has an electrical current rating of 180mAh (0.180 Amp hours).

 

[nephillim]

Some of the batteries have 0.81Wh batteries in them. I've only come across one so far. It has 2 model numbers on it too. 08460 and MC092501. It was out of a silver VX2 battery.

 

[The Doc]

Some of the batteries have 0.81Wh batteries in them. I've only come across one so far. It has 2 model numbers on it too. 08460 and MC092501. It was out of a silver VX2 battery.

Does it actually have 0.81Wh PRINTED on it? IF SO, that would be 0.81 DEVIDED BY 3.7VDC = 0.218 Amp hour or 218mAh (218 Milliamp hour).

 

[nephillim]

Yeah, I think I posted that at one point awhile back... but yeah, it has 0.81Wh and is a fraction longer and a little heavier as well.

 

[Neil_2]

Hey this might be a little off topic but I'm curious, does anyone see any reason not to drop a tiny bit of glue or sliver of sellotape or whatever to seal automatic batteries on these things? I have a DSE084 and I lost 4 batteries through direct dripping. Obviously ain't doing it anymore but just occured to me, doesn't seem like the hole in an automatic is integral to the batt connecting with the att. Any thoughts from those in the technical know?

 

[The Doc]

The thing that makes it an automatic battery is the air operated switch behind that hole. IF you plug that hole with epoxy, glue or solder.....you will make the battery completely inoperable. Take it from a guy who's dissected VX2 passthroughs & batteries to make his own contraptions.

I plug the hole on all my homebrewed contraptions...but they all have some kind of manual switch to activate the voltage supply. Don't plug the center orifice on an automatic battery!

 

[Neil_2]

Ok that settles that then! Cheers mate!

 

[nephillim]

Hey Doc, I've been looking at these cute little (well, sort-of little) switching voltage regulators and thought you might enjoy it...
3A Adjustable step down switching voltage regulator

 

[The Doc]

Nice.....a highly minaturized variable supply regulator with 3A of current handling. What do they cost? IF they are cheap enough, I certainly wouldn't mind having a couple. Adjust this regulator for somewhere in the range of 3.8 to 4.3VDC and you've got a KILLER vaping supply for a truly AWESOME mod

 

[nephillim]

Unfortunately around $25 for the 3A - they also have a 1Amp for $15 and of coarse a constant 3.3v and 5v as well. Pricier than a standard regulator, but if I remember correctly, the switching regs won't produce as much heat

 

[The Doc]

Unfortunately around $25 for the 3A - they also have a 1Amp for $15 and of coarse a constant 3.3v and 5v as well. Pricier than a standard regulator, but if I remember correctly, the switching regs won't produce as much heat

The $15 unit would do fine for most PV devices......you don't need 3 amps of current handling, since most attys will run fine on 1 amp.

Switching power supply circuitry is not always significantly cooler....the major design advantages (over conventional filter supplies) are smaller, lighter weight power supplies that are much more compact.....and in some cases very good EMI/RFI noise filtering....VERY importanat in computer and high tech radio gear such as military and Ham radio tramsceivers. I used to build & sell custom power supplies to suit pretty much any need in the realm of RF equipment