Rx200 what batteries to use

[Wastedcelery]

I am using an rx200 at about 100W with a .13 ohm coil it pulls about 27 amps and runs at 3.61v are the Sony VTC6 a good batteries to use in this application

 

[IMFire3605]

I am using an rx200 at about 100W with a .13 ohm coil it pulls about 27 amps and runs at 3.61v are the Sony VTC6 a good batteries to use in this application

1) The 27amps, that is a misleader reading, especially to new vapers or vapers new to mods, that reading on the screen is the amps being pushed from the mod control board to the coil of the tank/atomizer, not the amps being pulled from the batteries to power the control board which is the important number, and can only be calculated one of 2 ways.

18650 batteries operate safely between 2.5v absolute lowest to 4.2v absolute maximum full charge, most mods like the RX200 kick a battery error or shutdown in the 3.0 to 3.2v range. Key for a regulated mod like the RX200 is that error/shutdown voltage, and that is per battery. The RX200 is a series battery configuration which gives voltage X #of batteries, so using 3.2v lowest, 3.2v X 3 batteries = 9.6v lowest available voltage.

Formula #1 is (Watts Set/Lowest Available Voltage/90% Mod Control Board Efficiency Rating= Maximum Amps from the batteries), example using your wattage setting

100watts/9.6v/90% (or 0.9)=11.5741amps maximum

Fomula #2 is quite similar but narrows down per battery (Watts Set/Number of Batteries/Lowest Available Voltage for a single battery/90% Efficiency=Maximum amps per battery), example using you same watts

100watts/3 batteries=33.33 watts per battery
33.33watts/3.2v/90%=11.5729maximum amps per battery

The Sony VTC6 is a fine battery in your application as it is Manufacturer rated at 15amps Continuous Discharge, Mooch our resident battery torturor and tester tested them to handle 19amps Continuous, so 11.6amps is well within the VTC6's specs and perfectly fine in your application.

On a regulated mod, your Ohms really don't play much of an impact on their safety as the coils in the tank/atomizer only see the control board feeding them, not the battery, so there is a regulator inbetween the batteries and coils, unlike a mechanical/unregulated mod where the coil is directly connected to the battery in the circuit. On a regulated mod, Ohms only come into play in these two instances
1) Button is fired, control board reads the resistance of the coils (Ohms), if Ohm reading is within the programmed minimum and maximum safest resistance reading, go to next stage, if under minimum safest resistance, kick error and do not fire
2) Take resistance reading, check set watts, calculate needed voltage to reach set watts, connect circuit and fire.

 

[Wastedcelery]

Ok thanks I wasn’t sure if it ran in series or parallel and I didnt want to buy batteries that wouldn’t be able to handle the wattage I ran
I know about ohms law just kind of get lost when it comes to amps

 

[AzPlumber]

Lots of battery info here, Index | E-Cigarette Forum

One of the links from the above index, Calculating battery current draw for a regulated mod | E-Cigarette Forum

 

[BrotherBob]

Ok thanks I wasn’t sure if it ran in series or parallel and I didnt want to buy batteries that wouldn’t be able to handle the wattage I ran
I know about ohms law just kind of get lost when it comes to amps

Welcome and glad you joined.
Yes, amps and voltage can be confusing. This might help you remember:

 

[Baditude]

I am using an rx200 at about 100W with a .13 ohm coil it pulls about 27 amps and runs at 3.61v are the Sony VTC6 a good batteries to use in this application

I agree with IMR Fire's post above. With a regulated mod, coil resistance is irrelevant. What is relevant with a regulated mod is the wattage setting that you use.

In the interests of keeping things simple:

-If you use a good quality 15 amp CDR battery like the Samsung 30Q or Sony VTC6, then you are good up to 45 watts per battery; 90 watts using two; 135 watts for three batteries.

-If you use a good quality 20 amp CDR battery like the LG HG2 or Samsung 25R then you are good for 60 watts per battery. If using a 2-battery regulated mod, your good for 120 watts as you have two batteries. If you are using a 3-battery mod, you're good for 180.

-If you use a single 25 amp CDR battery like the Sony VTC5A, then you are good for 75 watts per battery, 150 watts for two batteries, and 225 watts with three.

-If you use a single 30 amp CDR battery like the LG HB6 you are good up to 90 watts; with a pair of 30 amp CDR batteries you could safely do 180 watts assuming the mod cuts off when the batteries reach 3.4 volts.​

WATTAGE PER SINGLE BATTERY:

20W-45W:

Samsung 18650 30Q, 3000 mah 15/20 amp CDR
Sony 18650VTC6 3000mAh 15/20 amp CDR
​

20W-60W:

LG 18650HG2 3000mah 20 amp CDR
LG 18650HE2 2500 mah 20 amp CDR
Samsung 18650-25R, 2500 mah 20 amp CDR
Sony 18650VTC5, 2600 mah 20 amp CDR
Sony 18650VTC4, 2100 mah 23 amp CDR
AW 18650 3000 mah 20 amp CDR
​

30W - 75W:

LG 18650 HD4 2100 mah 25 amp CDR
LG 18650 HD2 2000 mah 25 amp CDR
Sony 18650VTC5A, 2500 mah 25 amp CDR
​

60W - 90W:

LG18650HB6 1500mah 30 amp CDR
LG18650HB2 1500mAh 30 amp CDR
LG18650HB4 1500mAh 30 amp CDR
​

I've used the RX200 and I must confess that I have been disappointed in the battery efficiency of this mod. Despite it using 3 batteries, I could only get a little over a day's use with those three batteries. I was using both married LG HG2 3000mah 20A and married Samsung30Q 3000mah 15A batteries.

By comparison, I get a full day use using a single battery (same battery, model, and wattage setting) using my DNA75 watt mod.

 

[Fozzy71]