Hi guys,

I would like to ask to some expert how can I check the status of an old LiPo. 

Which are the parameters that tell me to stop using a battery and throw it away ?

I've got a HOTA F6 Quad Charger and also a SkyRC BD250 Discharger which I think it may be helpful in some way for this purpose (I can log the discharge curve on my PC).

the best parameter is: voltage stability inflight, cell voltage balance, internal resistance and cycles of use. if one isnt as it should, sort it out is never a mistake.


-voltage stability/performance inflight: do you still get decent performance?
-how is the voltage balance after flight between the cells?
-what internal resistance info do you get from charger or lipo checker?
-how many cycles did you? after 100cycles i would give more attantion, after 300cycles i would sort it out regardless anything else - but personal i didnt get 300cycles on any battery, the usual sort out scenario in my case is loss in performance, died cell or physical damage.

there is a nice article about from oscar;
https://oscarliang.com/lipo-battery-guide/