Battery and voltage connections
Simplify your design to the minimum number of supplies that will power all your devices. e.g.,







simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. PSU schematic.


5 V for the USB power and the ZED camera.
12 V is a popular standard voltage and will do for the LIDAR and TX1 board.
24 V direct will power the multisense camera.


Then,


Work out the current required for the 5 V and 12 V lines. Purchase a suitable 24 V input power switched-mode power-supply (SMPS) for each.
Work out the total power (W) for each line. Assume 80% efficiency for each SMPS.
Total the power (W).
Multiply by the run time in hours to calculate the total energy required (Wh).




Useful formulas:


Power, \$ P = VI \$.
Voltage transformation by SMPS: \$ V_{OUT}I_{OUT} = V_{IN}I_{IN} \cdot Eff \$.