I am desinging some experiment using a 9Ahr, 12 V as the power supply. I am not sure how many percents of the energy the battery can supply. For example if my experiment consumes a current of 0.1A, then how many hours the battery can be used?
The "9Ahr" refers to the amp-hour rating of the battery, which is a measure of the amount of charge the battery can hold. In this case, it means that the battery has a capacity of 9 amp-hours.
Battery capacity is typically measured in amp-hours (Ah) or milliamp-hours (mAh). This is a measure of the amount of charge a battery can hold and is determined by testing the battery under specific conditions.
The "12V" refers to the voltage of the battery. Voltage is a measure of the electrical potential difference between two points and is an important factor in determining the power output of a battery.
The lifespan of a battery will vary depending on how it is used and maintained. However, based on its capacity of 9 amp-hours, a 12V battery could theoretically provide 9 amps of power for 1 hour, 4.5 amps for 2 hours, and so on.
No, the battery capacity and voltage must match the requirements of the device it is being used for. Using a battery with a lower capacity or voltage could result in insufficient power supply or potential damage to the device.