Voltage-wise the apparatus will not be damaged, only that the 800mAh will provide longer run time than the 550mAh
You don't need anything. A 24v system is the cranking volts. The accessories are done for 12 volts.
No its not. Its for 24v security cameras.
You don't. 2 12v panels together don't make 24v - doesn't work that way. If you need 24v you need to get 24v panels.
To determine the amperage for a 24V 200AH battery, you use the formula: Amperage = Capacity (AH) / Voltage (V) So for a 24V 200AH battery: Amperage = 200AH / 24V = 8.33 amps
Of course it is bad, whether it`s humming or not.
A 24V transformer plug-in typically requires an input voltage of 120V AC and outputs 24V AC. It should be compatible with devices that require a 24V power supply. Make sure to check the wattage and current ratings to ensure compatibility with your device.
Apply 24v and listen for click Ck coil for open with ohmmeter Clean contacts if possible
The recommended voltage requirement for a thermostat compatible with a 24V transformer is 24 volts.
No
No
You need a 24v to 12v converter. Truck stops either keep them in stock or can get you one.
You need a DC power supply in order to connect a 24v DC motor to household power.