Battery topology and Max power

[Kikofarakiko]

So I just picked up an RX200s for the long battery life, but in terms of current capacity and battery safety I'm lost.

People told me not to run the power up to the point where it's drawing more that 6 volts, I'm not totally sold on that, I want to understand what's the main pain point with batteries, is it voltage or current? I tried to ramp up the power while the coil was connected and the device blocked me at 25A.

Plus, with a device running 3 batteries, are they connected in series for higher voltage or parallel for Max current?

Also I'm quite paranoid with the mod, like, I keep it isolated when I'm not using it, I have bad dreams about it exploding and burning my house down, how safe are regulated mods?

Sent from my HTC One X9 dual sim using Tapatalk

 

[Topwater Elvis]

As long as you select appropriate cells for the power range you intend to use regulated power devices are as safe as any other device with batteries in it.

The amp displayed on the the screen is output (from 'chip' to delivery device) it has nothing to do with input (from batteries to 'chip').

Using a regulated power device amp drain from the batteries to the 'chip' will be highest at the low voltage cutoff. W/V = A

Everyone has to set their own comfort zone/saftey limits for the cells we use. Mine tend to be on the lower end of the following / conservative.
20a CDR cells 50w - 60w per cell.
25a CDR cells 60w - 75w per cell.
30a CDR cells 75w - 90w per cell.

 

[Eskie]

As Topwater already said about wattage. I answer to your other question, in your 3 battery mod they run in series. Most regulated mods do. there are a few odd parallel regulated mods out there, but they're the exception than the rule. And as long as you're using and properly treating authentic batteries from a manufacturer like Samsung, LG, or Sony bought from reliable vendor, you should not have any particular worries about spontaneous detonation.

 

[Ryedan]

So I just picked up an RX200s for the long battery life, but in terms of current capacity and battery safety I'm lost.

People told me not to run the power up to the point where it's drawing more that 6 volts, I'm not totally sold on that, I want to understand what's the main pain point with batteries, is it voltage or current? I tried to ramp up the power while the coil was connected and the device blocked me at 25A.

Plus, with a device running 3 batteries, are they connected in series for higher voltage or parallel for Max current?

Also I'm quite paranoid with the mod, like, I keep it isolated when I'm not using it, I have bad dreams about it exploding and burning my house down, how safe are regulated mods?

Sent from my HTC One X9 dual sim using Tapatalk

You've got great info from @Topwater Elvis already Kikofarakiko, just wanted to add one thought.

It doesn't matter if the batteries are in series or parallel, they split the mods watt output. Voltage on the screen doesn't matter either. That means that if you're vaping at 100 watts each battery only needs to output 33.3 watts plus maybe 10% for efficiency loss in the electronics. At 37 watts you'll be drawing less than 13 amps when the battery charge is depleted, which is when it's highest.

 

[bwh79]

People told me not to run the power up to the point where it's drawing more that 6 volts, I'm not totally sold on that, I want to understand what's the main pain point with batteries, is it voltage or current?

Output voltage (device to atomizer) has very little to do with input voltage (battery to device). The battery/ies will deliver voltage equal to their charge state at any given instant. The device will convert this voltage into whatever voltage it requires based on the selected wattage setting, and the measured resistance of the attached device.

I tried to ramp up the power while the coil was connected and the device blocked me at 25A.

Likewise, that (output) current has nothing to do with the input current being drawn from the batteries.

Plus, with a device running 3 batteries, are they connected in series for higher voltage or parallel for Max current?

On a regulated device, it doesn't actually matter all that much. The calculations are different (you divide in one place, or multiply in another) but the end result is the same.

Example:
2 batteries in series (4v each * 2 = 8 volts) at 40 watts: 5 amps current (in series, so the full 5 amps is "seen" by each battery)
2 batteries in parallel (4 volts) at 40 watts: 10 amps (in parallel, the load is "split" evenly among the batteries, so each one only "sees" 5 amps. Or, alternatively, each one is only driving 20 watts.)

The short version: 20 amps translates to about 60 watts per battery, presuming roughly 3 volts under load at low-voltage cutoff. Stay under this limit (so, 60W with 1 battery, 120W with 2, or 180W with your 3-battery RX unit) and you should be fine.

 

[Alien Traveler]

...
Also I'm quite paranoid with the mod, like, I keep it isolated when I'm not using it, I have bad dreams about it exploding and burning my house down, how safe are regulated mods?

When you are not using it it is as safe (if not safer) as a laptop or a smartphone.

 

[NU_FTW]

What they said ^^