Q1) after draining a lipo battery to around 3.3v how long can i safely keep it at that level? Answered
Q2) what is the maximum safe time i can store a fully charged lipo before it needs to be used?
i have 2 lipo batteries for a speaker trailer and until their first charge and use they are being stored at 3.85v. i have done some google research and i think for the most part i understand how to safely use, charge and store them. They won't be used very often, perhaps 5 times a year on average.
1) i have purchased low voltage alarms so that i will know when to switch everything off however i will in most cases be using the speakers out in parks and fields at least 30mins to an hours ride away from a power socket so would it be safe for the batteries to sit at such a low voltage for around an hour before i can get them on the charger again?
2) previously i used SLA batteries and was able to charge them safely overnight before an event while i slept but according to everything i've read about lipo charging i have to keep a close eye on them while they charge so i would prefer to charge them during the day prior to an event, however i'm concerned that several hours 'storage' at full charge might be asking too much...