If working on the electrics of a car then it is a sensible precaution to disconnect the battery.
No, you can charge the battery while it's in the car.
no
Disconnect the negative cable first when disconnecting a car battery
Disconnect the negative battery cable.
Disconnect negative cable first from old battery and connect it last when installing new battery.
You may have to disconnect and recharge your car battery for your car stereo to work again.
Because your alternator is shot.
Remove the negative and then positive cables from the battery.
if the battery has some juice left then yes..but if you disconnect battery then NO
Disconnect the battery cable, you do not have to touch the battery.
Disconnecting Auto Battery Terminal ConnectorsYes, 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.
Start the car and while it is running, disconnect the positive cable from the battery. If the car stalls, the alternator is bad.