Background
The battery percentage of units > 1135 typically drops overpropertionally fast after back transition. Our battery estimation is voltage based and applies different parameters for hover and cruise. The battery estimation does not account for important factors influencing the voltage drop under load like temperature, weight, wind conditions, etc and hence, is tuned conservatively, to make sure the drone has enough power to land even if it lands on 0%.
The problem is known and will be worked for one of the upcoming releases (1.9.5, 1.10, ...). It is not yet prioritised though.
Sympthoms
This conservative estimation results in a battery behaviour after back transition that feels not right for the user and many users complain about it. The battery drops very fast (eg back transition at 80% in 40m, landing at 45%) during descent and is back to a high value after repowering WingtraOne (eg back to 75%).
This is the case for all drones higher than 1135 and all batteries (also the good new ones).
Communication for end-customers and resellers
Explain the situation for the user and let them know this will improve with one of the upcoming releases. You may use the template "Battery Percentage dropping too fast after Back Transition"
Communication for end-customers that upgraded from a pre-1135 unit
Be a bit more careful here, as the battery estimation after back transition was feeling better on their old unit. Explain the situation for the user and let them know this will improve with one of the upcoming releases. You may use the template "Battery Percentage dropping too fast after Back Transition"