10 things to know about smartphone, laptop’s battery
What’s the tiny print on my phone laptop/tablet charger?
Next to output, you’ll typically see 5V (5 volts) and Amps (the rate of flow of electric charge). Voltage can vary depending on the type of charging technology.
For instance, Qualcomm’s QuickCharge technology works by increasing the voltage to 9 or even 12 volts. Amperage for these chargers can be anywhere between 500mA (milli Amps) to 4 Amps. Multiplying the voltage with amperage will give you the watts -the working capacity of that particular charger.
Therefore, if you have a 5V 2A charger (10 watt), it will charge your phone faster than a 5V -1A (5 watt) charger. Not all phones are built to accept a faster charger though — so it’s best to use the charger and cable that came supplied with your device.
Does 10,000mAh actually mean 10,000mAh for powerbanks?
Obviously, a 20,000mAh power bank will hold more of a charge than a 10,000mAh power bank. But it may not necessarily be double, depending on the circuitry inside and quality age of the battery. Lithium-ion batteries degrade over time — their capacity to hold a charge diminishes gradually.
Also, if you have a phone with a 2,000mAh battery, you will not be able to use a full charged 10,000mAh battery to charge your phone five times. This is because some of the capacity of the power bank is lost in conversion.
The battery of the power bank itself may have a voltage of 3V but it uses circuitry to bump up the output to 5V — there is a loss in conversion.
What are the different kinds of fast charging?
Different companies may adopt (or license) the same technology and call it something different — turbo, rapid and fast are common monikers. This requires a few key things: A high-quality battery, special circuitry to regulate the charge and a charger that can alter the voltage of the charge in the same charge cycle.
Many latest flagship phones support QuickCharge 3.0 — though everything is backwards compatible with v2.0 and v1.0. Contrary to popular belief, it won’t harm your phone’s battery if you only plug it in for a short while — in fact, the batteries are happier this way — never to be fully discharged and never fully charged.
With QC3.0 it’s possible to go from 0% to 50-60% within a span of 30 minutes.
What are always-on laptop ports?
Some laptops offer always-on ports and there will typically be a tiny symbol (maybe a lightning symbol) next to the port that is ‘always on’. Some always on ports will also provide a faster current (1 or 1.5A) and these will work regardless of whether the laptop is on or not. Obviously , these draw power from the laptop’s battery itself.
You may also find some software on the laptop that allows you to tweak the ports -switch them on/off or control how much of the laptop’s battery they are allowed to use.
Does a larger battery always means longer battery life?
Even with smartphones, the kind of screen, processor and related components can vary the amount of power draw.
Therefore, you may still find a phone with a 2,000mAh battery that outlasts a phone with a 3,000mAh battery –given the same sort of usage.
How viable are solar mobile chargers?
This means you will not get a full charge, even with a full day’s worth of sunlight. These devices do make a lot of sense for people who are outdoors a lot — camping/trekking trips and solar chargers are a natural fit.
Battery packs vs battery cases - which one is the better choice?
The issue is that you will have to carry along a heavy battery pack and a charging cable with you all the time.With a phone case, you don’t have to carry a separate wire and your phone can easily work between 2 to 3 days depending on the capacity of the battery case.
It also adds an extra layer of protection for your phone since the case is large and thick. The issue with the case is that it makes your phone bulky to carry around and it is much expensive compared to a power bank.
You can charge a phone with another one
Once connected (and if USB host is supported/enabled) your phone will start charging from the other phones’ battery.
How wireless charging work?
What this means is that instead of plugging in a cable, you just place the phone on the charging mat and it will start charging. The most common wireless charging standards being used in devices today are Qi and PMA.
You can also add wireless charging to your phone by using cases with built-in wireless charging — these are easily available for popular models.
Are all car chargers built the same?
These devices will not have the circuitry required to properly regulate the current at 5V or protect against spikes/dips (car voltage keeps varying, depending on whether the engine is on/off and the condition of the battery).
For the same reason, you should stay away from un-branded and multi-pin car chargers because they will not be able to provide a stable charging current for each pin.