Yes, it is safe to disconnect a "car" battery while it's raining, IF you do it properly.
When disconnecting a vehicle battery, raining or not, ALWAYS disconnect the NEGATIVE [--] terminal first, and when reconnecting, always connect the NEGATIVE terminal last.
Yes but BE CAREFUL
No, they're not. No electrical apparatus should be used while it's raining or where they can get wet as serious hazards may occur.
disconnect battery cables
Gosh I hope so! I have been doing it for decades! Just check the chemical levels and make sure they are safe. I even swim while it is raining!
Not at all, u could end up drowning from the rain
Yes, just make sure you have the car and lights turned off while you're doing the work.
Yes it is OK for horses to be out in the pasture while it is raining. There should however be some sort of covering for them to stand under in case of heavy wind and downpours. It is a little different in the winter when horses should be protected with waterproof rugs .
Behind the glove compartment to the right. I'd disconnect the battery before changing it just to be safe.
This depends on the type of battery. Car batteries are always charged while in use. With other types of batteries, this is not recommended and may result in a battery explosion or damage to the device the battery is powering.
Yes a dog does know when it is raining and he will like it inside so that he does not get wet.
As long as its not raining it's fine :]
They are safe to use for your lawn make sure you pay attention to the safety recommendations though. Such as using a proper extension cord, or never using it while it is still wet or raining outside.