Exactly What mAH Is? (In General)
What Is mAH? Capacity Of Battery & Best Mobile Phone Charging Tips?: In this section, we’re not only talking about mobile batteries. But, we’ll let you know about What does mAH mean in general for all kinds of batteries. Also, what is the real capacity of the battery? Batteries, we all know them. They come in many shapes and sizes. But most importantly they come at different voltages and capacities today. In the next thousand words or so, we will look at how to make sense of battery capacity and their different voltages.
What Is mAH? Capacity Of Battery & Best Mobile Phone Charging Tips?
So, here are a few different types of battery. A standard double, a 1.5-volt Alkaline cell, an 18.6, 53.7-volt lithium-ion cell and a 1.2-volt nickel-metal hydride cell. NOTE: These names of batteries are collected from Google and are mentioned here just for the sake of reference. You can choose your own as well, to understand what mAH does really mean?
Lithium-ion cells are rechargeable but the standard 1.5-volt double battery is non-rechargeable. We have all see the double, a cell and probably already know, its nominal voltage is 1.5 volts. The lithium-ion or even lithium polymer cells are very common in applications that require higher voltages and higher current output used commonly in laptop power supplies.
Smartphones, Tablets, Electric cars and more when you purchase a battery. You usually see these ratings on the packaging or the battery itself, these are the capacity ratings of the battery. mAH stands for Milli-Ampere Hour. Sometimes, you will see an H or AMP hour. Now, the milliamp-hour rating of a battery can give you a really good idea of the amount of time it will last before it is discharged. And, needs recharging, for example, when you see that a battery has a rating of say 2000 milli-amp hours. For simple maths, this means that you can draw 2,000 milliamps or 2 Amps from the batter for one hour or even 1000 million-amps or one amp for two hours or even better.
You can draw 20 milli-amps for a hundred hours from a battery with a two thousand milliamp hour rating. So, this 1.2-volt nickel-metal hydride cell has a rating of two thousand eight hundred and fifty milli-amp hours. So, let’s say we power a small torch that has three volt LEDs that consumer combined. The total current of 60 milliamps. These LEDs require three volts and a nickel-metal hydride battery. It has a nominal voltage of only 1.2 volts to get us over the three volts threshold. We need three of these batteries in series. So, we will put three nickel-metal-hydride cells in series, into our imaginary torch. Does this change our overall capacity?
No, the capacity rating is the same because our batteries are in series. The fact that they are in the series has increased our voltage. But not the capacity. The story would be different if we had the batteries in parallel. But, we will get to that shortly. So we have our three nickel-metal hydride cells with a combined nominal voltage of 3.6 volts. This means we will not be able to power the three LEDs that will consume the 60 milli-amps. So, how long will this imaginary torch last? Doing the calculation, we are consuming 60 milli-amps and our total battery capacity.
Because it’s in series, it is still 2,850 milli-amp-hours. So all we have to do is divide the total battery capacity by the total power consumed in this case. 2850 and 50 Milli-amps. Divided by 60 milli-amps gives us an answer of forty-seven points five hours. So, our torch should light for 47.5 hours. That’s pretty good. Thanks to the excellent efficiency of LEDs but not choir our math is not wrong here. Our torch would certainly light for 47.5 hours. But, only if the voltage stayed above three volts. The fully charged voltage of a 1.2-volt nickel hydride battery is 1.4 volts.
And, a discharged or dead nickel-metal hydride battery is around 900 millivolts or 0.9 volts. So, our total voltage here is fully charged to start with is 4.2 volts. The three times 1.4-volt cells in this case. We would have to use a 60 Ohm resistor for LED to bring it to its twenty milli-amp current draw at three volts as the batteries discharge. The voltage drops meaning over time – the torch will consume less current and eventually, the voltage of the batteries will drop below the required voltage of three volts to light the LEDs.
This means, that while our calculated answer gives us a great estimate of how long the batteries will last, it really involves a lot of complex maths and we have to take into account many more variables to accurately understand how long it will really last. Overall, it really depends on what batteries you are using, what you’re powering and in what configuration. It’s very enough for us to say if we are not in a position that requires us to account for every milli-ampere and every other variable.
The simple division of capacity by the current consumed will give us a good enough idea of how long battery should last. One last thing we need to mention here is that if we connect batteries in parallel instead of series, the voltage will always stay the same and the capacity will increase. So, instead of combining the voltages, in this configuration, the combined fully charged voltage. In this configuration, is 1.4 volts, not the 4.2 volts, like we had in the configuration in a parallel configuration. The voltage stays the same, but the capacity increases. So, let’s say we have to 23.7-volt lithium-ion cells with a capacity rating of 2500 milli-ampere hours.
Two of these batteries in parallel gives us the same 3.7-volt nominal voltage or fully charged voltage of 4.2 volts. But, increases the capacity. Two of these batteries would give us a total capacity of 5000 milli-ampere hours again in a series configuration. The capacity would remain at two and a half thousand milli-ampere hours but the voltage will instead be increased to a fully charged voltage of 8.4 volts or nominal 7.4. And, by the way, if you are wondering, you can also increase capacity and voltage by having series and parallel combinations.
If you were confused by the nominal voltages vs the fully charged two voltage, this is simply just the chemistry of each batter. A lithium cells nominal voltage is 3.7 volts. But, fully charged, it is 4.2 volts. When you draw current from the battery, it will slowly creep back to its nominal voltage before. Then, discharging – its considered discharge voltage of around 2.8 – 3 volts. So, we hope you could make sense of all of this information.
So, when you get your home energy bill, it lists the usage in Kilowatt Hours. But, when you will go to the store, you will see things like 12 watt light bulbs, 9-volt batteries and vacuum cleaners. With 15 Amps of sucking power.
But what do these numbers even mean? Why are there so many different units to measure something that seems as straightforward as electricity? Surprisingly, the answer is not just so. Appliance companies and physics professors can confuse you. It’s because several important things have to happen in an electrical circuit for electricity to flow. And, for work, to be done, you can think of a circuit kind of thing.
Like a faucet on your kitchen sink. If you want the water to come out, you need two things, you need the water itself and some pressure to force it through the pipes out your faucet. And, into your neti pot. Similarly, an electrical circuit uses electrons to carry the electricity kind of like the water in our faucet analogy. But, those electrons need something to push them along a circuit. This electrical pressure is what we call the Voltage and is often provided by two terminals. One with a positive charge and one with a negative charge, and so on.
A battery electrons flow from the negative end, through whatever. It is you are trying to power and then into the positive end. Where they will stay unless your battery is rechargeable if you are plugging something into the wall. this voltage instead provided by your power company and although voltage, just measures how strongly electricity is being pushed through a circuit.
It’s important because many circuits are designed only to accept a certain number of volts which is why hairdryer you bought in Monaco might release magic blue smoke. If you plug it in New York, so now that you know what voters are what about AMPS. Well, in this context amp is not short to fire. But, rather for ampere, which is a unit of how much electrical charge is flowing past a given point in one second. So, when you put volts and amps together, you can tell how much current is flowing and how hard it’s flowing multiply these numbers and you get finally our third unit, the watt.
Let’s go back to our water analogy for a second, let’s suppose you wanted to spin a small water wheel because of you just like watching this spin or we don’t know maybe you have it hooked up to a generator. Let’s say you have a really powerful water pistol that forces water through a tiny nozzle. Even though, small nozzle means, the total volume of water flowing per second is not all that much. You wouldn’t want to fill your swimming pool with it. The high pressure creates a strong jet that can spin the wheel easily. But, suppose instead of a water gun, you have a much wider hose, that doesn’t push the water out.
Nearly, as strongly but because the hose is a lot wider, more water flows per second. Overall, and the wheel ends up spinning at the same speed. It did with your water gun if we think of the hose and the water gun pushing out electricity instead of water. We could say that they are delivering the same number of watts for a more practical example. Let’s say you have an 1100 watt power supply for your computer, that’s drawing full load because you are rocking four-way SLI or something. So, if you plug that into a standard 110-volt North American outlet, some simple Maths tell you that 10 amperes of current are running through your power supply.
But if you take that same power supply, and use it with a 220-volt European outlet, you are only drawing 5 Amps. But, since the amount of power in Watts is the same, your computer will work just fine in both places. Even though you’re using different volts and amperes, well that makes sense. But why then is our energy bill in Kilowatt-hours? Is that a unit of time? No, actually, scientists are just mean. It’s a unit of energy.
Watts and Kilowatts express how much energy is consumed per chunk of time. Something, scientists call power which is not the same as energy. But, if you multiply a kilowatt by an hour, the unit’s cancel and you are left with a number that shows how much energy that you hogged by running your air conditioner, gaming rig and novelty, lava lamp, all at once. But what if you are more concerned about battery capacity instead of what’s coming out of your walls?
Well, if you are buying a replacement battery or a battery pack, you might see their capacity listed in milli-ampere hours again. Not time doing the maths shows that this is a unit of charge. Not energy or power. So, going back to our water example, this is like how much water you have in a bucket. Not how much is flowing or how fast is flowing. So, a bigger bucket means you could charge your phone more times. According to experts, the right voltage adapter installs the correct power supply or just aced your electrical engineering exam if you want to do more with your life than work for some second rate tech website.
Mobile Phone Battery Charging Best Tips?
While our smartphones continue to get more powerful with faster processors and larger screens. Those lithium-ion batters that power our phones have not improved at the same rate. In this section of the article, we will share with you some important tips to keep in mind that will improve the battery life on your Android Phone. Coming up next – there are chances that you may have heard of these tips somewhere.
You probably already know, if you are not tech-savvy or you’re new to Android having just upgraded from an iPhone to any Android device. We will go through these tips step by step. Let’s start off the settings that can improve your battery life, swipe down from the top and tap on the Settings icon located here in the lower right from here. We will go through the various settings in order on a phone running Android API. Depending on your version of Android, or your phone’s manufacturer, some of these may not be available or may be in a different location, here at the top in network and Internet.
If you have no need for Wi-Fi or you have a poor signal that is not worth having on the toggle, the switch to turn it off in the Oreo Update, Android introduced a new feature that will continue to look for saved Wi-Fi networks. Even when you have wifi turned off. To disable this feature, tap on Wi-Fi and select wi-fi preference where it says to turn on Wi-Fi automatically. Toggle the switch to turn it off with it disabled, your wifi won’t automatically turn on near your saved networks. Let’s head back and below. Wi-Fi let’s go into the mobile network if you are in an area with strong Wi-Fi signals like your home or office where you have no need for mobile data. Turn it off and back on the previous screen.
When you truly need to disconnect from your phone turning on aeroplane mode will disable your Wi-Fi, cellular and Bluetooth reducing the drain on your battery for disabling your Bluetooth and NFC. Let’s go into connected devices, tap on connection preferences. If you don’t use Android Pay, Samsung Pay or Share Data with other NFC enabled phones to turn off and it sees completely. Now, let’s go into Bluetooth, make sure to disable it when you are not using it. Having both of this turned off when you have no need for them will help to extend your battery life.
There are many apps that are actively running in the background when you are not using them to restrict specific apps. Tap on apps and notifications, find the app you want to restrict. You may need to select see all apps. Find and tap on the app. Go to advanced, then the battery and select background restriction and tap on restricting to stop that app from using your battery in the background. You can also eliminate an app’s eligibility to use mobile data in the background. Let’s go back and select data usage where it says background data. Toggle to switch off to disable background data access for that app. Moving right along, let’s jump into the battery, tap on battery saver.
This is a cool feature that will conserve battery power by restricting device features and apps toggling the switch on. You can adjust the slider to have battery saver turn on automatically. When the charge drops down below, then make sure to select adaptive battery. Having this feature turned on, will limit the battery usage for those apps you rare use or don’t use it all. Back on the battery screen, if you want to find those battery hogging apps like Facebook in the upper right tap on the menu button and select battery usage.
This is not a good example, you want to check this at the end of the day or when your charge is low to find the culprits. If you can live without those misbehaving apps you might want to get rid of them for good. Back in the menu settings menu, just below the battery, tap on the display. The brightness of your screen can have a major impact on battery life. Go into brightness level, adjust the slider down to the lowest possible level where everything is still easily visible to you in addition to saving your eyes.
Nightlight will have an impact on saving your battery as well although the impact on battery life is minimal. It’s good to enable this feature to make your screen easier to look at and they claim it they help you sleep better. Mine is to turn on from sunset to sunrise tapping on schedule gives you other options including turning it off and turning it on at a custom time. Let’s go back and head into wallpaper if your phone has an OLED screen using a black wallpaper will extend your battery life.