Choosing your voltage!!why 3.7v or 7.4v??

[yuk]

It seems when you build your own saber, you have a choice between 3.7v single battery or a 7.4v dual battery, but the question I have is if a 3.7 li-on battery can be used to power a sword why would you use 7.4v?? I have not found a proper explanation in the forum to this question...As I am new to this if anyone can explain in detail why or why not choose 7.4v over 3.7v design or if you know where I can get the answer...please let me know

[Forgetful Jedi Knight]

Welcome to the Forums.

To briefly answer your question, until recently, you always needed 7.4V packs to power your sabers, because that's what it took to power soundboards like a Crystal Focus and later the Petit Crouton. More recently, an entry level soundboard (the NB) was developed and designed to only be powered by a 3.7V battery. The Petit Croutons could be hacked to run off of a 3.7V battery, but those who choose to do it sacrifice some sound volume in the process.

[Jay-gon Jinn]

Which one you you choose may also depend on your intended use for the saber...a 3.7v battery pack will generally have a longer runtime between charges than a typical 7.4v pack, usually due to the size of the cells that will fit inside an MHS or most other makes of sabers. A single 3.7v 18650 will have up to 3x the runtime than a 7.4v 14500 or 14650 7.4v pack.