1 battery or 2 batteries?
- Thread starter Michael Friel
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Stacking has another advantage or two that no one has mentioned, assuming a regulated "mod" is in use like a Vamo, SVD or Evic. The efficiency of the device, itself, is enhanced by the higher supply voltage. To achieve even moderate power levels, five to seven watts, the boost circuit comes into play (single 18650). The boost circuit consumes current since it is not 100% efficient which heats the electronics of the device itself which can potentially shorten the life of the device. The higher current demand, checked by measuring with an ammeter, placed on a single battery also increases internal heating of the battery which in turn, decreases its useable charge life (how long a particular charge may last).
In a stack (2x18350), current demand on the batteries is dropped to about a third of that required of the single battery at the same power level. This results in lower heating to the device components as well as the batteries themselves. Both of those factors also combine to enhance charge life. In a "real world" test simulation, five second load with a 25 second rest, the single 18650 produces about 275 "cycles" while the stacked 18350s produced about 475 cycles.
I am not advocating that everyone run out and stack the first pair of 18350s they can find. Before stacking an understanding of the risks and hazards of stacking is needed as well as knowing how to check the batteries and monitor them to help insure proper safety.
There doesn't seem to be a lot of reports of batteries "exploding" in vaping devices and causing bodily harm. From what I have seen they generally fail while charging and many times are a result of poor judgment, lack of common sense or just plain ignorance on the part of the battery "operator". This can be from poor batteries or inexpensive chargers. Eventually, I am sure that a battery or stack of batteries will fail in a device with some bad results, but that is as inevitable as a plane or car crash. If you sow a million seeds you are bound to reap one potato.
In a stack (2x18350), current demand on the batteries is dropped to about a third of that required of the single battery at the same power level. This results in lower heating to the device components as well as the batteries themselves. Both of those factors also combine to enhance charge life. In a "real world" test simulation, five second load with a 25 second rest, the single 18650 produces about 275 "cycles" while the stacked 18350s produced about 475 cycles.
I am not advocating that everyone run out and stack the first pair of 18350s they can find. Before stacking an understanding of the risks and hazards of stacking is needed as well as knowing how to check the batteries and monitor them to help insure proper safety.
There doesn't seem to be a lot of reports of batteries "exploding" in vaping devices and causing bodily harm. From what I have seen they generally fail while charging and many times are a result of poor judgment, lack of common sense or just plain ignorance on the part of the battery "operator". This can be from poor batteries or inexpensive chargers. Eventually, I am sure that a battery or stack of batteries will fail in a device with some bad results, but that is as inevitable as a plane or car crash. If you sow a million seeds you are bound to reap one potato.
It is a great resourcefull read and alluding to safety in great detail, so why is it at the bottom of the forum main page and not at the top?
I will say this; the couple of times I did stak my batteries using the SVD deeeeeeyaumn!
It was some serious vapin.
But as far as the technical aspect as far pros and cons you would do well to listen
to what the uber geeks are saying.
for me batt stacking would be something I would do at home.
Because it makes the device too large; but thats just me
It was some serious vapin.
But as far as the technical aspect as far pros and cons you would do well to listen
to what the uber geeks are saying.
for me batt stacking would be something I would do at home.
Because it makes the device too large; but thats just me
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