IPV3 Li 165W Box Mod With Temp Control - £55.91

[Get Off My Cloud]

www.vaporizerchief.com/ipv3-li-v2-165w-box-mod-by-pioneer4you/
165w temp control out of the box, firmware coming to upgrade to 200w



Code "BUD" brings the price down to $89.05 or £55.91 in English.

[VapingBad]

That is just wrong, 165 W is pushing 2 18650 too far IMO, 200 W is just stupid and there are no 35 A 81650s.

[phatfil]

?? isnt the power conversion/transformer to provide the max output a h/w circuit independent from any s/w run on the milliamp microcircuitry??

i struggle with electronics.... so could be shooting wide??

[Ripshod]

I worry about the authenticity of the optional VTC5s they supply too.

Yet another manufacturer pushing beyond the sensible. But then, how many are going to vape that high? (that's no excuse)

[VapingBad]

Jun 18, 2015 13:36:21 GMT phatfil said:

?? isnt the power conversion/transformer to provide the max output a h/w circuit independent from any s/w run on the milliamp microcircuitry??

i struggle with electronics.... so could be shooting wide??

The simple way to think of it is:
The board will have 7-10% loss due to electronic efficiency so the wattage drawn from the batteries will be around 222 W.
So when the batteries at 3.25 V the current (I = P/V) = 222/3.25 = 68.3 A or 34.15 A per battery, but that is not safe enough IMO as one battery can easily be at a lower voltage so I would use 3 V or even 2.75 V to pick batteries, which will give 37 A & 40.3 A.  And I don't know how low it will run the batteries it could be worse so as a general rule I would use 2.5 V for the calculation giving 44.4 A.  BTW you use the lowest voltage of the battery as that is when the current would be highest.

So even even when you are very nice to it in the calculations 200 W would need > 34 A batteries, ther are none, but to be on the safe side I would specify 45 A batteries, again there are none.

It might be that the mod monitors the battery sag and limits the output to protect the batteries, if so you will only get a few puff from freshly charged VTCs so the 200 W claim would be BS.

[phatfil]

Think (know) im out of my depth here, but If im understanding things correctly IF the cells used can provide the power required (165w/200w) the micro circuitry on the control board wont be handeling that power but will be controlling it probably via rapid proportional switching (pwm), so how can a firmware reflash change the max power?????? Surely thats defined by the cells and h/w wired between the cells and the 510 connector??

[Deleted]

[VapingBad]

Jun 18, 2015 14:09:03 GMT phatfil said:

Think (know) im out of my depth here, but If im understanding things correctly IF the cells used can provide the power required (165w/200w) the micro circuitry on the control board wont be handeling that power but will be controlling it probably via rapid proportional switching (pwm), so how can a firmware reflash change the max power?????? Surely thats defined by the cells and h/w wired between the cells and the 510 connector??

The board has to work hard to be able to judge this, the battery will provide more amps than are good for it if the circuit permits it.

Jun 18, 2015 14:09:03 GMT phatfil said:

Think (know) im out of my depth here, but If im understanding things correctly IF the cells used can provide the power required (165w/200w) the micro circuitry on the control board wont be handeling that power but will be controlling it probably via rapid proportional switching (pwm), so how can a firmware reflash change the max power?????? Surely thats defined by the cells and h/w wired between the cells and the 510 connector??

The power output is completely controlled by the software and typically no board will try and use it components to the max in their spec so there will be some room to turn it up.

[VapingBad]

It is like getting your car performance chipped to the max without upgrading the breaks, tyres & suspension and then taking it racing, you don't need to understand the maths to know it is a bad idea and that your engine is not going to last for 150,000 miles.

[phatfil]

Cheers VapingBad.. back to my reading....

[digiw0rx]

Jun 18, 2015 13:26:48 GMT VapingBad said:

That is just wrong, 165 W is pushing 2 18650 too far IMO, 200 W is just stupid and there are no 35 A 81650s.

Nice to see some sense!