A voltmeter and an ammeter
No, an unplugged battery charger will not cause a battery to discharge.
During battery discharge, the species that is oxidized is the anode.
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.
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.
To get the rated capacity, limit the discharge rate to 0.25C
chemical reactions take place in battery which reduce the charge.
It depends on the type of battery, and the capacity of the battery, and the application you are using the battery for.
When performing a battery jump, the red color should be connected first.
recycle it
Battery capacity tester