If voltage reading is in the YELLOW or RED areas of the chart above, perform the following;
Try to start the engine, if it starts, then let it idle for at least ten minutes while you complete the rest of the vehicle inspection.
If the vehicle does not start, a jump box may be used. IF a jump box is not available, then a charger or a tender will need to be hooked up, and the engine start will need to be performed later.
After you have finished and the engine is turned off, check the voltage again. If it's not in the higher GREEN area, do one or more of the following;
Tell managment / Hook up the solor battery tender / Hook up a 12v battery charger. (You may be required to remove the battery to hook up a charger).