Hi, i just noticed today one of my batteries went down to 88% life.
Its been sitting last week since i did not fly it.
It has about 35 flights and i have it since July. Should i sent it to service for replacement?
Should i trust and fly with it?

Roi

Yes but only one time it self discharged. I usually dont let it more than 1-2 days.
Anyway i think 7 days is not much for a lipo.

I think tomorow i will do a flight and discharge it below 8% , maybe it will calibrate and save it...

Battery Life refers to "charges remaining". From what I have read here, the batteries are good for roughly 300 charges. Your screen grab shows 34 times charged, based on that and 88% battery life remaining,  math dictates you can expect to get 249 more charges. Charge, discharge and store properly and that could very well be achieved.

Hi ,Roi
Don't worry about this . The battery life declines with filghts . Just remember to keep your baterry properly .

Thanks, i always treat lipo well, because i come from 10 years of rc helis
Maybe i will change the 7 days for 2 or 3.

I will keep an eye on that lipo, and will not fly the difficult and far away flights with this one

Roi

Hi Roi,

I've had something similar happen to me, but at the same time, I got relatively high differences in the voltage between the first, and the other three cells (~0.05 to 0.07v difference). My battery life went down to 91% at a given point. Now, after seeking advice here, what I did to improve the cell differences was perform five charge-discharge cycles going from 100% to 30%. That helped a lot, and now healthydrones says that I have  minor differences with one or two major ones, which I have been told is ok. As for the battery life, it looks like the sensors in the smart battery need to get re-calibrated after a while, hence the recommendation to go to down to 8% every 20 cycles. After doing that and IMMEDIATELY charging, my battery went from 91% battery life to 99%, which I would say is quite acceptable after around 50 cycles.
I hope this helps

Hi Rincewind,

my 1st cell also is the one with the difference in voltage. I did today a flight and discharged it till 7%. I charged it and i see some diffrence on the first cell , but i will do some flights and some cycles, i hope it gets better.

Thanks for your advice, i will do the same

Phantom_Film Posted at 2015-11-12 09:23
Hi Rincewind,

my 1st cell also is the one with the difference in voltage. I did today a flight and  ...

Glad to hear IT, AMD glad to be helpfull. Keep us posted, tell us how the battery is behaving, pleas!

Hi, after 2-3 cycles, the battery life is 99 to 100% again.
I still see the 1st cell 0.03v or something, less than the others but nothing strange.
I guess even on storage, the batteries do not like sitting arround for days, weeks...