Solar ArduRover

I'd like to introduce the Solar ArduRover, solar powered small drone.

 The chassis is from  offroad model LRP S10 Twister Buggy - 1/10 Electric 2WD.

The motor is LRP Vector K4 Brushless Motor - 17.5T.

Weight of the Rover without  solar panel is 1290 g.

Weight with the solar panel  1700 g.

The solar panel has 24 cells. (2 X 12)

Cell Specifications:0,61 Volt / 930 mA / 438 mW /  52 x 52 mm.

The Rover is powered  by 2 S Lipo battery.

When in charge, each group of 12 cells produces aprox. 5.710 V and 0.850 Amp,  powering  separately each battery element.

So I performed several tests.

First step: I programmed the ArduRover for a list of recorded GPS waypoints.

Second step : add the solar panel performed several tests

The last one lasted 60 minutes. Between  11:45 and 12:45 LT. Not the maximum value for peak sun hours.

At start the battery voltage reading shows 7,65 V ( 3,79 + 3,79).

60 minutes later I got 7,45 V ( 3,69 + 3,70)

This is the video:

Endurance: ?

So, what should be the next step?

Thank you for your attention.

Regards.

Manuel Veloso