When in the course of human events (namely vaping) it becomes necessary to decide whether or not to toss a cart, atty, etc., the resistance of the device bears consideration. In my many years of messing with old electronics (radios, amps) it's been a fairly common thing to find resistors which have gone way out of spec - always to the high side - from heat and power surges. A cart or atty is basically a resistor of sorts and seems to react the same way, except they're subject to much more heat. Thus, their resistance, over a relatively short period, can increase significantly. For example, a Boge LR cart is nominally rated at 2.0 ohms or so, which is generally borne out by multimeter measurement. However, after a couple of weeks, mine always creep up by .5-.8 ohms, making them less LR and more SR. At the usual 3.7v they suffer a great deal of vapor and taste degradation, but the ability to jack up the volts as necessary seriously extends their useful life.
I usually start off at around 3.7v, but by the end of week one I'm up to 4v, then 4.2, and generally end around 4.7. This may shorten their absolute (as opposed to useful) lives, but life (mine) is too short to vape on crappy, foul-tasting carts. With a standard mod, ego or whatever I'm tossing these things after a few days.
For this reason alone I'll never go back to fixed voltage. But when you consider all the other advantages it's really a no-brainer...
I usually start off at around 3.7v, but by the end of week one I'm up to 4v, then 4.2, and generally end around 4.7. This may shorten their absolute (as opposed to useful) lives, but life (mine) is too short to vape on crappy, foul-tasting carts. With a standard mod, ego or whatever I'm tossing these things after a few days.
For this reason alone I'll never go back to fixed voltage. But when you consider all the other advantages it's really a no-brainer...
