Sony VTC 5 help?

[stmanlanny]

Ok so i recently purchased the sony VTC 5 30A batteries however after doing some research online I've learned that the actually max discharge current is 20a. I have a rx200 running 3 batteries one in series and 2 in parallel. Does running the batteries in parallel and series increase the max discharge current? Also, I'm trying to run a 0.2 ohm coil and am wondering if that is safe on a rx200 using three sony vtc5 "30A"?

I'm also wondering if I have the nitecore i4 charger with 4 bays, is it safe to only use 3 of those bays? because I know when only charging one battery the nitecore gives out 750mah to that single battery and I don't know if the sony vtc5 can handle that.?

 

[Boden]

Ok so i recently purchased the sony VTC 5 30A batteries however after doing some research online I've learned that the actually max discharge current is 20a. I have a rx200 running 3 batteries one in series and 2 in parallel. Does running the batteries in parallel and series increase the max discharge current? Also, I'm trying to run a 0.2 ohm coil and am wondering if that is safe on a rx200 using three sony vtc5 "30A"?

I'm also wondering if I have the nitecore i4 charger with 4 bays, is it safe to only use 3 of those bays? because I know when only charging one battery the nitecore gives out 750mah to that single battery and I don't know if the sony vtc5 can handle that.?

All three are in series.

200W/9.6V = 20.8A

Since I doubt you will be vaping at 200W often you'll be fine.

The charger is fine for those cells.

The charger has a 750mA charge not mAh.

 

[stmanlanny]

i thought the calculation was as follows 4.2/0.2= 21 amps. which is 1 amp above the max

 

[Susan~S]

i thought the calculation was as follows 4.2/0.2= 21 amps. which is 1 amp above the max

It's calculated a little differently when using a regulated device. Courtesy of @Mooch in one of his battery blogs. As the voltage drains the stress on a battery goes up. Though you are well over 20A at 200 watts.

• Calculating Battery Current Draw for a Regulated Mod

 

[Boden]

i thought the calculation was as follows 4.2/0.2= 21 amps. which is 1 amp above the max

That is the formula for a single/parallel cell mech.

For regulated it is: highest wattage / battery voltage at low cutoff = amp + 10% = amp draw from cells.

Example.
200W mod
3 cell
Low voltage cutoff at 3.2V per cell.

200W/9.6V = 20.83A + 2.08 = 22.91A

Do you actually plan on vaping at 200W?

 

[Boden]

It's calculated a little differently when using a regulated device. Courtesy of @Mooch in one of his battery blogs. As the voltage drains the stress on a battery goes up. Though you are well over 20A at 200 watts.

• Calculating Battery Current Draw for a Regulated Mod

Now thats funny, my work here is done.

 

[Susan~S]

Now thats funny, my work here is done.

Comes in handy, Mooch and his battery blog posts. A general rule of thumb for me is 50 watts per 20A cell. I like a little more headroom.

 

[Boden]

Comes in handy, Mooch and his blog posts. A general rule of thumb for me is 50 watts per 20A cell. I like a little more headroom.

I agree, I've been explaining this to people for the last 6 years. After explaning it a thousand times I don't care who gets the credit as long as the information gets out.

 

[Susan~S]

I agree, I've been explaining this to people for the last 6 years. After explaning it a thoudand times I don't care who gets the credit as long as the information gets out.

I'm a one-handed typer/vaper so it's so much easier for me to post links when someone else has taken the time to explain it all.