What to consider when buying a Smartphone: Battery Life


Personally, one of the things l consider before buying a new smartphone because to me, my phone’s battery is one of the most important pieces of hardware on the device, seeing as nothing can happen without it or when it doesn’t last for long considering that l am a heavy phone user.  

While it’s not necessary to have comprehensive knowledge of chemistry that goes into making portable power possible, it’s at least useful to understand basic terminology, like mAh, to make a well-informed purchase. 


The spelling of mAh does look a little weird to me and the first day’s l didn’t know what it was and what it meant, so why is it this way? The A is capitalized because, under the International System of Units, “ampere” is always represented with a capital A.  

The term mAh is an abbreviation for “milliampere-hour,” and it’s a way to express the electrical capacity of smaller batteries. With larger batteries, like car batteries, we usually use ampere-hours, or Ah. There is 1000 mAh in a single Ah. 

mAh is calculated by multiplying the amount of time the battery lasts by the amperes of the discharge current. That may sound complicated, but it’s not. If you have a battery and you don’t know what it’s capacity it is, all you have to do is hook it up to supply a 1000 mA discharge and see how long it lasts. If it lasts an hour, hey, you’ve got a 1000mAh battery. If it lasts 7 and a half hours, well then you’re holding a 7500mAh battery. 

Battery life is effectively inversely correlated to how frustrated you will be with a mobile device. One of the biggest complaints we hear about a smartphone or tablet is that the battery dies in the middle of the day. If you want a positive handset experience, mAh size is one of the first figures you should look at. 

In general, the more mAh and the longer the battery capacity or battery life. a higher number means that the battery can store more energy, so it has a higher capacity. Of course, this also means longer battery life for a given usage. This can be used to provide an idea of how long a device will last, given a constant (or average) power draw rate.  

While battery size (physically) and its capacity are limited by the factors, there are still a few things you can do if battery life is of utmost importance to you like me. We wish we could tell you to get a phone with a removable battery, but in modern days those are nearly non-existent. There are a few, though. 

You can accept the industry’s band-aid solution and buy a phone that has quick charging. Pretty much every modern Android flagship features quick charging, as do a growing number of mid-range and budget phones. While this doesn’t solve the battery life problem, it at least makes it a bit easier to charge those tiny batteries right back up. 

The other solution is to simply carry around a portable Power bank in situations where you might need a little extra juice because all technologies are still crushing with Moore’s Law velocity, aren’t seeing the same advances for lithium-ion batteries.  


Please enter your comment!
Please enter your name here