The appliances connected to your battery need a certain amount of amps to function. An inverter, for instance, might use 100 amps of current, but a light bulb might only need 2 amps. The total current demands of all your appliances will give you the required maximum amperage. Devices may occasionally have watt ratings rather than amp ratings.
To get the voltage of batteries in series you have to sum the voltage of each cell in the serie. To get the current in output of several batteries in parallel you have to sum the current of each branch .
It can supply 1.5 V, but I don't see any information about the current (in A) or the power (in W). Where can I find this information? You should look in the datasheet of that AA battery and check the discharge curves. That gives you an indication. Note that the highest discharge current that is mentioned is 1000 mA = 1 A.
However, the actual amperage required will depend on the size and type of your vehicle. How Many Amps Are in a 12-Volt Car Battery? A 12-volt car battery typically has an amperage rating between 40 and 80 amps. However, some high-performance car batteries can have an amperage rating of up to 1000 amps.
The amps on a car battery refer to the amount of electrical current that the battery can deliver. The higher the amperage rating, the more power the battery can provide. The amperage rating is particularly important when starting your vehicle in cold weather conditions, as it requires more power to turn over the engine.
The formula for converting volts to amps is derived from Ohm’s Law: Where: Let’s say you have a 9V battery connected to a 3Ω resistor. To find the current: Imagine you’re designing a circuit for an LED light. You have a 5V power supply and the LED has a forward voltage of 2V with a recommended current of 20mA (0.02A).