I'm not sure if this may be YOUR problem but when I was having my battery discharge on me, I ended up disconnecting the passengers electric seat. Again, I'm not even sure if that was the problem or if it's your problem either, but it seemed to work for mine.
No, an unplugged battery charger will not cause a battery to discharge.
This can occur due to a light remaining on or some other electric device is using energy from the battery. The electrical system must be evaluated to determine the source of the parasitic draw. Typically however, if the source cannot be obtained, the battery is considered bad.
During battery discharge, the species that is oxidized is the anode.
how do you change a battery on a 2002 Pontiac Montana
First thing is the battery itself. It it has a dead cell it will self-discharge overnight. So have the battery tested to make sure it is good. Secondly is that there is something on pulling power from the battery. Dome, under hood, glove box, trunk, or curtorsey light. You can also have a relay that is sticking.
Almost anything. On newer model vehicles, the engine's computer drains the battery constantly, as does the stereo. Short circuits can cause a drain. Any electrical system that is left on will drain the battery. Even a disconnected battery will lose charge over time and the older the battery, the faster it drains. Also a battery with a dead cell will discharge itself, usually overnight.
To effectively discharge a NiMH battery using a NiMH battery discharger, follow these steps: Connect the NiMH battery to the discharger according to the manufacturer's instructions. Set the discharger to the desired discharge rate, typically measured in milliamps (mA). Monitor the discharge process to ensure the battery does not overheat or over-discharge. Once the battery reaches the desired voltage or capacity level, disconnect it from the discharger. Properly dispose of the discharged battery according to local regulations.
Something is on draining your battery overnight. Any light or any relay. It can also be your battery has a dead cell draining it overnight.
Use a battery maintainer.
To safely discharge a NiMH battery, you can use a resistor or a specialized battery discharger. This will help prevent over-discharging, which can damage the battery. Make sure to follow the manufacturer's guidelines for proper discharge procedures to ensure safety and prolong the battery's lifespan.
Either there is a dead cell in the battery or something is drawing power from the battery. Even a good battery will slowly discharge over time. Normally it will take months.
Depends on the battery. Several hours to overnight.