Sure. A fan is just a motor with a live and a ground wire. It doesn't even matter which is which for testing purposes; if you wire it backwards it will just spin backwards. Trace the wiring back from the fan motor. At some point it will probably be connected to something else by some kind of connector. If you disconnect it there, you can take a couple of pieces of wire and connect them to your battery terminals with some Duct Tape or something. Jab the other ends onto the terminals going to the fan, It will either spin or not spin. But you need to make sure the wires go directly to the fan motor and not through something like a relay or some sensor that tells it to some on only at high temperatures.
Phil
No
Normally connecting the cables in reverse order can cause it to explode. Overcharging can also cause the battery to rupture but it is highly unlikely it would explode.
The main cause of battery drains is a bad electrical system. The electrical system is normally powered by the alternator and once the alternator goes bad the battery has a hard time holding a charge,
This would normally mean a problem with the alternator. But it can also be loose for corroded connections.
No, a starter cannot cause a battery to fail to charge. It could cause the battery to discharge quickly.
The battery gauge in a vehicle will move when you use your power mirrors as your causing a small drain on the battery & lowering the voltage slightly. The effect is normally only really visible when the engine is not running.
No. That would short out and potentially cause a fire. The negative side will go to the frame or the body to ground.
dead battery
You're describing a common problem. Many times a relay, such as the AC relay, will fail to turn off when the key is off. When that happens the device controlled by the relay, such as the AC clutch, will remain engaged and drain the battery.
Weak battery and no gas can both cause a no start.Weak battery and no gas can both cause a no start.
Yes, a corroded battery can cause an intermittent voltage drop.
Bones will not cause the arm to be in a straight position, instead, muscle and tendons will cause the arm to be straight.