First check to see if any light is on. Trunk, under hood, glove box, dome, taillight, stop light, etc. If no lights are on you may have a stuck relay. To check for a stuck relay remove the fuses that control anything with a relay. Fuel Pump, power windows, power seat, power sunroof, power door locks, etc. You will hear a click if the relay is stuck and will see a spark at the fuse when you remove it. It can also be the battery has a dead cell. To find out simply disconnect the negative cable overnight. If the battery is dead the next morning it is defective and needs replacing.
Crack or hole in the battery case or it is being overcharged by a defective voltage regulator.
Find source and fix it.
Usually a battery will leak because of overvoltage, overtemperature or a bad battery cell.
Your question is vague. Where is it leaking from? Or, r u asking how to find the source of the leak?
No they use dry acid if its wet then they will leak out like a car battery.
Find the leak source and repair it. Usually the cause is cooler hoses.
if you smell gas but cannot find the leak or source immediately get everyone out the house and go to the neighbors. call the police and then they will handle it from there
I use a leak down tester that applies air pressure from an outside source to the cylinders.
Leaking from where on the battery, the caps? If so the charging system may be over charging the battery and causing the acid to boil out. Could be a voltage regulator problem.
It all depends on where the oil leak is located. First find the source, then know your mechanical abilities, repair your self or find a person that has done this repair before to tackle it for you. There is nothing you can add to the crankcase that will stop an oil leak.
This is not advised! The 9-volt charger might have a current limiter so that nothing burns up, but it any case if left on it will destroy the 6 volt battery by overcharging. A 6-volt charger is not expensive.
You need to find the source of the small fuel system vapor leak.