How Many Hours Is 4 To 9

With all batteries, we best know amp-hours (Ah) and watt-hours (Wh). This will allow united states to estimate how long will a battery run an electric device or evaluate how many amp-hours practice you need for running an electric device. That's why nosotros will look at how to calculate amp hours of a battery.

Here'south the thing:

With many batteries and ability banks, y'all only get watt-hours (Wh) specified on the label. What you want to know, however, is how many Ah does the battery hold and how many Ah yous need. This includes how many amp hours battery exercise y'all need to run an electric device with certain wattage for a specified time.

Example 1: How long will a 100Ah battery run an appliance that requires i,000W? Simple. 100Ah battery running on 12V has a battery capacity of i,200Wh. It will run a ane,000W appliance for 1.two hours; that's i 60 minutes and 12 minutes.

Case 2: I want to run a 400W device for six hours. How many amp hours bombardment do I need? This device will burn through two,400Wh of electricity. You need a two,400Wh battery. Given that most batteries run on 12V voltage, that ways you lot will need a 200Ah battery to power a 400W device for 6 hours.

To help everybody with these calculations, nosotros accept designed a 12V Battery Amp Hr Calculator. Yous simply input the wattage of a device and how long you desire that device to be run past a battery, and the calculator will tell you how many amp-hours (Ah) does that battery hold.

You volition find the calculator further on, consummate with the Amp Hours Chart (tells y'all how many Ah you need to ability different devices for 1h, 2h, 4h, and 8h).

Near batteries run on 12V. Voltage factor is the thing we unremarkably forget when calculating how many amp hours battery we need.

Note: If yous tin can't notice the answer in this article, you tin use the comments below, specify what you want to run, and we will aid you calculate amp hours.

Here is how to calculate battery amps hours from watt and how long tin can a battery power such a device manually. You can also apply a calculator for easier calculation:

How To Calculate Ah Of A Battery?

The battery AH adding is best explained via an instance. Let's say you want to power a 100W electrical device by using a battery. Specifically, y'all want this bombardment to run a 100W device for 8 hours. How many amp hours bombardment do you need?

First, you need to calculate how much electricity is needed to ability such a device using this simple equation:

Electricity Needed = Device Wattage × Time (In Hours)

In our instance, nosotros accept:

Electricity Needed = 100W × 8h = 800 Wh

This means we need a battery that has an 800 Wh capacity. Of course, nearly battery capacities are not expressed in Wh simply in amp-hours (Ah). Yous will at present need to convert Wh to Ah (you can use this calculator for easier conversion) like this:

Ah = Wh / Voltage

About batteries have a voltage of 12V. Here is how many amp hours battery you lot demand to power a 100W device for viii hours:

Ah = 800W / 12V = 66.67 Ah

This means you will demand a battery with at least 66.67 amp-hours (Ah).

Here is the step-by-step procedure how to calculate Ah of a battery:

1. Summate the electricity needed to power an electronic device. That means you desire to multiply the wattage by how many hours yous want the device to run. Example: 100W × 8h = 800 Wh.
2. When you accept the Wh, you lot have to catechumen Wh to Ah. To do this, yous take to dissever watt-hours by voltage (12V for batteries). Example: 800Wh / 12V = 66.67 Ah.
3. The calculated Ah is the minimum amp hours your battery should have to ability your device for that time flow.

If all this sounds a flake circuitous, don't worry. You tin use this calculator that does all these calculations automatically. Below the calculator, you will likewise notice an Amp Hours chart that illustrates how many Ah you demand to power various devices for 1h, 2h, 4h, and 8h:

12V Battery Amp Hours Estimator

You lot can apply this calculator to figure out how many amp hours 12V bombardment you need to ability a device with known wattage for a specified time:

Hither is how this Ah computer works:

Let's say you take a 200W device and want the battery to power it for v hours. How many amp hours battery should you get? In the Ah figurer above, y'all just slide the wattage to '200' and the hours to 'five'. You become the event: To power a 200W device for v hours you will need a battery with at least 83.33 Ah.

That means yous tin can apply a 100 Ah battery, for example.

Yous tin play around with the numbers to come across how the battery Ah is calculated. Here is a chart with calculated amp-hours for different devices and running times:

Amp Hour Chart (1h, 2h, 4h, 8h Running Time)

Device Wattage	Ah Needed For 1h Run Fourth dimension	Ah Needed For 2h Run Time	Ah Needed For 4h Run Time	Ah Needed For 8h Run Fourth dimension
10 Watt	0.83 Ah (830 mAh)	ane.67 Ah	iii.33 Ah	6.67 Ah
20 Watt	1.67 Ah	3.33 Ah	6.67 Ah	13.33 Ah
50 Watt	4.17 Ah	viii.33 Ah	sixteen.67 Ah	33.33 Ah
100 Watt	8.33 Ah	16.67 Ah	33.33 Ah	66.67 Ah
150 Watt	12.50 Ah	25.00 Ah	fifty.00 Ah	100.00 Ah
200 Watt	sixteen.67 Ah	33.33 Ah	66.67 Ah	133.33 Ah
250 Watt	twenty.83 Ah	41.67 Ah	83.33 Ah	166.67 Ah
300 Watt	25.00 Ah	50.00 Ah	100.00 Ah	200.00 Ah
350 Watt	29.17 Ah	58.33 Ah	116.67 Ah	233.33 Ah
400 Watt	33.33 Ah	66.67 Ah	133.33 Ah	266.67 Ah
450 Watt	37.fifty Ah	75.00 Ah	150.00 Ah	300.00 Ah
500 Watt	41.67 Ah	83.33 Ah	166.67 Ah	333.33 Ah
600 Watt	50.00 Ah	100.00 Ah	200.00 Ah	400.00 Ah
700 Watt	58.33 Ah	116.67 Ah	233.33 Ah	466.67 Ah
800 Watt	66.67 Ah	133.33 Ah	266.67 Ah	533.33 Ah
900 Watt	75.00 Ah	150.00 Ah	300.00 Ah	600.00 Ah
1,000 Watt	83.33 Ah	166.67 Ah	333.33 Ah	666.67 Ah
1,500 Watt	125.00 Ah	250.00 Ah	500.00 Ah	i,000.00 Ah
2,000 Watt	166.67 Ah	333.33 Ah	666.67 Ah	i,333.33 Ah
2,500 Watt	208.33 Ah	416.67 Ah	833.33 Ah	1,666.67 Ah
iii,000 Watt	250.00 Ah	500.00 Ah	1,000.00 Ah	ii,000.00 Ah
4,000 Watt	333.32 Ah	666.68 Ah	1,333.33 Ah	2,666.68 Ah
five,000 Watt	416.65 Ah	833.35 Ah	i,666.67 Ah	3,333.35 Ah
10,000 Watt	833.33 Ah	1,666.67 Ah	three,333.33 Ah	6,666.67 Ah

Here is how you can use this chart:

Permit's say you accept a 100Ah battery and desire to know how many watts device you tin run for 1h, 2h, 4h, or 8h. Merely check the nautical chart and you will see that:

• A 100Ah battery can run a i,200-watt device for ane h (this is not specified in the chart, you can calculate it).
• A 100Ah battery can run a 600-watt device for 2 h.
• A 100Ah battery can run a 300-watt device for 4 h.
• A 100Ah battery tin can run a 150-watt device for 8 h.

Very big solar batteries can take a capacity of more than 1,000 Ah.

We hope this helps clarify some things about what size bombardment you lot need (in amp hours). If you have a question, just utilise the comments beneath and we'll try to help y'all out with the calculations.

Source: https://learnmetrics.com/amp-hour-calculator-how-to-calculate-amp-hours/

Share this post