Amperage is a rate of electrical flow. In a battery-powered electrical circuit, as in almost any circuit, the current flow is a factor of the load, not the supply. For example, a battery powering 2 bulbs in parallel will supply a flow double that with a load of one bulb. The measured amperes from the battery would be double. While any battery has a maximum discharge rate, this is rarely reached when used as designed. When a battery-powered device is operating with the specified battery, it will draw power from the battery at just the rate (amperage) it needs. Batteries are, however, rated as to how long they will produce a current of a stated amperage. This rating reflects the total capacity of the battery. The units of this rating are commonly milliamp-hours, or mAh. For example, a particular rechargeable cordless-phone battery is rated at 800 mAh. This means the battery can store enough energy to release 800 mA per hour for 1 hour; or it could release 1 mA per hour for 800 hours; etc. (Not every battery is tagged with this information, but the manufacturer can provide it.) Therefore, selecting a battery is a matter of choosing one that:
- is rated at exactly the voltage the device specifies
- has the best mAh rating for the price
- fits the device properly and has the matching connections needed.
Then just be certain to install the battery in the proper direction, matching the stated polarity expected. (Match the "+" end of the battery to the "+" contact, and "-" to "-".) Caution: We have to consider maximum source amperage when powering equipment from line power sources, such as a wall plug or a power transformer plugged in to the wall. In this case, be certain the total specified power draw (in amperes or milliamperes) does not exceed the maximum amperage rating of the source. For example, your breaker box will likely trip if the total power draw from a room's wall plugs exceeds 15 A. And an overloaded power adapter (wall transformer) will overheat or perhaps burn if powering a device that demands more power (milliamps or amps) than it is rated to provide.
The amps being delivered by a battery depends on what it's connected to and what
job it's doing. When there's nothing connected to it, it's supplying zero amps.
To measure the amps with an ordinary multimeter, the amps must flow through the
meter. That means you have to disconnect one wire from the battery and temporarily
wire the meter into the 'gap', so that all the current flows through it.
-- If you know the resistance of the circuit connected to the battery, or if you can
measure it with your ohmmeter, then the battery current is
(battery voltage)/(circuit resistance).-- If you don't know or can't measure the circuit resistance, then the only way todetermine the battery current is to measure it with your [milli]ammeter.
Disconnect one of the wires from the battery, and insert the current meter right there,
in series with the battery connection.
Depends on the battery. It is listed on the battery as Cold Cranking Amps (CCA).
About 11,000
1.5 Amperes, or Amps.
To charge a car battery you need aproximatly 8000 amps To charge a car battery you need aproximatly 8000 amps
To determine how many amps a battery can handle, this information should be on the battery itself. You can also get a battery tester to determine amperage.
You cannot compare these two totally different things. As far as amperage the charger puts out more amps if it is an auto battery charger and also puts out 12 volts. If you are talking about a 9 volt battery charger then the battery may or may not be more powerful, it depends on how many mii-amps the charger is putting out.
Depends on the battery. They are not all the same. It depends on the battery , a BCI group size 65 battery is rated at 650 cold cranking amps
modern cars use a 12 volt battery. Amps depends on the battery. Common sizes range from 500-800 cold cranking amps.
It varies by manufacturer and battery.
Remember that watts are voltage x current(amps) The number of watts you can get from a 48V battery will depend on how many amps the battery can deliver and how much the load can draw.
Multiply the vots by the amps to find the volt-amps. Or divide the volt-amps by the voltage to find the amps.
About 650 cc amps