Definition and measurement method of lead-acid battery voltage drop

Tags: Lead-acid battery voltage drop definition and measurement method Voltage drop refers to the voltage change relative to the same reference point after the current flows through the load. Simply put, the voltage difference across the load can be considered a voltage drop. The voltage drop is the driving force for the flow of current. If there is no voltage drop, there is no current flow. For example, if the voltage at point A (potential difference equal to 0) is 2V and the voltage at point B is 8V, then the voltage drop at point A to point B is 6V, or at point B, the voltage drop at point A is 6V. The lead-acid battery voltage drop test is mainly to test the load performance of the lead-acid battery. The method is to charge the battery to more than 80% qualitatively and measure the no-load voltage of the battery. The 5W/2W battery is used as a load to connect the positive and negative terminals of the battery as a disconnection of the battery, and the connected devices are connected in series. The voltage drop within 5 seconds after the switch is turned on is not more than 0.4V, which is qualified.
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