volt calculation

[Afiz]

Im using 18650 batteries..
1 battery ard 3.7v so if im installing 2 batteries in a mechanical mod.. should the volt x2 or mantain 3.7v? How is the calculation..

 

[MorpheusPA]

It depends. In a series installation (one battery's positive touches the other battery's negative, like in a flashlight that runs on two AA batteries), you double the voltage. The mAh you have available remains the same, and the amperage you can draw remains the same as with one battery.

In a parallel (side by side with the batteries usually installed in the same direction) setup, the voltage remains the same at an average of 3.7, but your mAh doubles, as does the amps you can draw.

*Most* two battery mechanicals I've seen are in series...but not all.

 

[Baditude]

As above:

batteries stacked end to end doubles the voltage, but does not affect capacity (mAh)

batteries wired in parallel double the capacity (mAh), but does not increase the voltage


By the way, a fully charged battery has 4.2 volts. 3.7 is the average voltage. So, if you are calculating the amp draw a coil will have in an Ohm's Law calculator, use 4.2 volts. Explain It To The Noob: Ohm's Law Calculations

 

[Robert Cromwell]

WARNING: If a 2 battery mech mod ALWAYS put the batteries in as they are supposed to go. If you put one in backwards a massive short will happen and rapidly do very dangerous and bad things.

 

[Afiz]

Well thank you all for the education.. really helps me alot as im new into mechanical mods....