I know there's a consensus of opinion here that TB47/48's shouldn't be discharged lower than 3.5 volts. This seem contrary to the general stuff I see on lipos elsewhere, where many seem to think that 3.3 is OK. Reason is, since last firmware you are given a red warning when the voltage falls below 3.5V and has made me very aware that often I'm dipping down to 3.4 at the end of flights. I've never worried about it until now. I'd be curious to know what the difference in chemistry is for the DJI lipos which makes < 3.5 a no go, and, it seems, just about every other lipo slightly less is acceptable. Is there anything from DJI about which documents this?