I bought a new ego twist battery and the light on the charger is yellow?

[X P3 Flight Engineer]

err, I read that lower resistance is better. I bought the 1.7ma ones. 1.7 +2 = 3.7v ?

Thanks to VV you can adjust the voltage to match the resistance. It used to be that, because you could not raise the voltage, you had to lower the resistance. It's a different world with the Twist and 2.5 ohm gives the widest range of voltages you can use. Set it where it tastes best to you!

I personally never use below 2.0 because it is easier on the battery.

 

[illectronic]

Yes, lower resistance is better if you are limited to PV producing only up to 3.7 volts.
But...
On average the sweet spot is around 8.5 watts.

To get to that spot, ~8.5 watts, you have to use these voltages:
1.7 Ohm: 3.8 volts, 2.23 amps
2.5 Ohm: 4.6 volts, 1.85 amps
3.0 Ohm: 5.05 volts, 1.68 amps

Either 1.7 or 2.5 (and whatever is between) will give you 8.5 watts using Ego C Twist, but 3.0 at maximum of 4.8 v only gives you 7.68 watts.

Oh, and the lesser the amps drawing from the battery the longer battery's time between recharge.

Thanks for the detailed explanation. So if I'm going to use 1.7ohm it's good but my battery won't last as long due to it being 2.23 amps? Also, what calculations do you use to derrive 8.5 volts?

 

[illectronic]

Thanks to VV you can adjust the voltage to match the resistance. It used to be that, because you could not raise the voltage, you had to lower the resistance. It's a different world with the Twist and 2.5 ohm gives the widest range of voltages you can use. Set it where it tastes best to you!

I personally never use below 2.0 because it is easier on the battery.

Thanks,

I'll try these 1.7's and order some 2.5's for next time. I love this ego and am willing to invest more in it. It's becoming more and more fun and interesting the more I learn about it here.

 

[YKruss]

Thanks for the detailed explanation. So if I'm going to use 1.7ohm it's good but my battery won't last as long due to it being 2.23 amps? Also, what calculations do you use to derrive 8.5 volts?

There is a link - Ohm's Law / Watt's Law Calculator