RE: No fancy battery cycler
Like Ken said the main thing a good cycling charger will do is check your battery capacity. I just went through checking every rec pack I had in service and found two bad packs one would take a charge but had a bad cell and would drop voltage right away. The other was a 2000 mah pack that would only discharge 400 mah. I am glad to have found it now instead of only being able to make one flight with it or worst half a flight. As your fleet grows its a good way to track your batterys and predict failures before a crash.