Which voltage reading should i go by?

[stickboy]

Just noticing that my voltage monitor shows a lower reading inflight than when sitting with motors still. So should I be going by my multimeter reading after I land and test the battery, or should I be going by the voltage while it is in flight? Earlier I got a 14.89V on the monitor, then I landed and tested to find it was 15.3ish with no current draw.

[Chippercheese]

Just noticing that my voltage monitor shows a lower reading inflight than when sitting with motors still. So should I be going by my multimeter reading after I land and test the battery, or should I be going by the voltage while it is in flight? Earlier I got a 14.89V on the monitor, then I landed and tested to find it was 15.3ish with no current draw.

Your voltage will always "bounce" back up a bit after landing, totally normal. Use the voltage under load/in-flight as your guide, since that is the level each cell is currently at - you don';t want to overdischarge them.

[guest325]

Your first figure includes load sag which is the most important to watch,  this figure tells you what is really going on.