Unbalanced lipo

K

kookoocachoo

Member
I have a 3c lipo and the the batterys individual voltage read as such: no1 3.66, no2 3.81, no3 3.81. I'm just wondering if cell 1 is a problem or not. Also, just wondering what you have your battery voltage alarm set to. I was gonna set it to 3.4v, but don't really know how many minutes or seconds I'd have to land before the battery went to a damaging low. I'm not gonna be doing long distance flying or anything.
 
Mike

Mike

=)
Admin
Do you have a balance charger? If so, when you charge/balance it, does it charge and balance to the same voltage? If so, you should be good. The cells don't typically discharge perfectly evenly.

As far as low voltage goes, most people seem to go 3.5v per cell (and land from there) to be on the safe side. Although a lot of non-adjustable low voltage alarms are set at 3.3v.
 
K

kookoocachoo

Member
Yeah, I have a balance charger, but no way to discharge yet as I am in the works of building my first quadcopter.
I charged it a little and it did even up a little more with the other cells, but they all charged some (lowest cell charged most). I think its fine. Thanks, for the alarm recommendation :)
 
holtneil

holtneil

Well-Known Member
Moderator
Hi I to have what Jackson has too so I can bring up single cells
As for running the battery 3.2 is the very lowest to go but by the time you land it may be less so to be nice to the battery and so they last I would land at 3.4 the alarm will go off if you fly hard before the cells at rest read 3.4 but you can adjust the alarm to suit how you fly
Hobby king does a voltage alarm which has a bleeper/ vibration unit that fits to the transmitter or drops into you pocket it's really good and cheap
Also you can get a balance checker how this works is after you charger the battery plug this in and if cells are out of balance it will automatically balance the cells
 
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