WattFlyer RC Electric Flight Forums - Discuss radio control eflight

WattFlyer RC Electric Flight Forums - Discuss radio control eflight (http://www.Wattflyer.com/forums/index.php)
-   General Electric Discussions (http://www.Wattflyer.com/forums/forumdisplay.php?f=3)
-   -   3S or 3S1P (http://www.Wattflyer.com/forums/showthread.php?t=73622)

garyp1029 04-23-2014 12:28 AM

3S or 3S1P
 
Battery questions: (1) What is the difference between 3S and 3S1P batteries? (2) Does one parallel charge both 3S and 3S1P in the same way? Thanks. Gary

xmech2k 04-23-2014 02:52 AM

Same thing. As I read it in the 'Everything You Ever Wanted to Know About Electric Powered Flight' thread here, the 'S' stands for Series, as in how many cells are in series. The P tells you how many of those xS packs are connected in parallel. I think they're getting away from the P part. At least that's how I read it.

kyleservicetech 04-23-2014 03:30 AM

Quote:

Originally Posted by xmech2k (Post 946339)
Same thing. As I read it in the 'Everything You Ever Wanted to Know About Electric Powered Flight' thread here, the 'S' stands for Series, as in how many cells are in series. The P tells you how many of those xS packs are connected in parallel. I think they're getting away from the P part. At least that's how I read it.


Yeah, as far as your charger goes, it doesn't care if your battery is internally wired as "1P", "2P", or what ever. As long as only one balance cable is brought out for the entire battery pack.

As for me, I'm using those 2300 Mah (Milliampere Hour) A123 cells, where they require two parallel batteries to get up to a 70 Amp capability. Most of mine are wired as 6S2P configurations. The 6S2P requires 6 times 2 or twelve cells for the battery pack.

fhhuber 04-23-2014 04:56 AM

Yep... most of our batteries are now 1P and so they don't note the P.

It used to require paralleling to get much above 1000 mah capacity because we were repurposing cell phone batteries.

AEAJR 04-27-2014 04:45 AM

Yes, most packs today are 1P so we rarely see that notation any more.

But, to review

We increase voltage by putting packs in series.

the nominal voltage or a LiPo cell is 3.7V so a 3 cell or 3S or 3S1P - 11.1V (3.7X3)

We parallel cells to get higher capacity or higher amperage output.

So if we take a 3s1500 mah pack and parallel two together we get 3S2P 3000 mah at 11.1V.


All times are GMT +1. The time now is 01:01 PM.

Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Page generated in 0.08191 seconds with 13 queries