What does the voltage and ampere of a battery mean?

1 Answers
DiKaleb
07/29/25 6:01pm
Here is the meaning of voltage and ampere in batteries: 1. Ampere (A) is the unit of current, where 1A equals 1000mA. 2. Volt (V) is the unit of voltage. The symbol V~ represents alternating current (AC), while V— represents direct current (DC). Common examples include 220V AC for household electricity, and 1.5V for batteries, 12V for car batteries. 1V equals 1000mV, with mV commonly used in electronic circuits. Here is additional information: 1. The ampere of a battery refers to its capacity, measured in milliampere-hours (mAh) or ampere-hours (Ah). For example, mobile phone lithium batteries may be 2500mAh, 18650 lithium batteries 1200mAh, while car lead-acid batteries are often labeled in Ah, such as 120Ah or 200Ah. 2. The volt of a battery refers to its rated voltage. For instance, mobile phone lithium batteries are typically 3.7V, 18650 lithium batteries are also 3.7V, while lead-acid batteries come in 2V, 6V, or 12V. Car batteries commonly use 12V, whereas electric vehicles use multiple 12V batteries connected in series to increase voltage. New energy vehicles also use 18650 lithium batteries connected in series to achieve the required operating voltage.
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