Seems to only way would be to invest in good batteries or a better phone. I have seen people use an apparatus like a phone case that charges the phone. I am sure there is someone somewhere working on the very question you are asking about.
Dear Diary R. Sulaiman : in improving battery lifetime you can consider several actions that can save your battery and sustain the health of your battery. Delete any app that you have in your phone that you do not currently using it. This is because most apps run from the background and consume your battery without your knowledge. Always charge fully and then start using your phone. Do not talk while your phone is charging. I hope these helps.
There are software applications that make batteries consumption more economical. Excessive applications can be removed. The most efficient practical measure is to turn off your phone after you stopped talking, or looking at the messages, or watch the Internet. Your incoming calls and messages can be saved by the smartphone and replied later at the time of your convenience.
Heat exacts a lot on battery life. Reduce phone activities that generate heat. Some suggestions come readily to mind. Remove phone casing, Reboot the phone at least daily or twice a day, switch on the airplane mode to disable all connectivity, reduce the display brightness, check the settings to turn off unused apps and do not expose phone to direct sunlight.
عدم شحن البطارية لفترة طويلة تركها بدون شحن لفترة طويلة. إيقاف بعض تطبيقات الهاتف التي تستهلك طاقة البطارية. التقليل من درجة إضاءة الهاتف. ضبط فترة قفل الهاتف بعد الانتهاء من استخدامه إلى دقائق معدودة
You can save on the life of a cell phone in several ways:
After having a total charge of 6 to 12 hours when new, it is recommended not to leave it charging overnight, because it is enough with 2 hours a day to have a full charge (100%)
Also having it in Wi-Fi (network) when it is on the street, the cell phone "overheats" looking for signal and losing battery power. In this case it is better to have the cell phone in "mobile and data" and when you arrive in a safe place with Wi-Fi, connect again.
A lot of energy is also spent when watching videos continuously, as the image in motion and sound, consume a lot of "ram memory" and also a lot of battery power; therefore, it is advisable to have a varied use or only use App with energy saving.
Another way to save is to have the cell phone set up for energy savings, and not have several unused App or windows open; therefore, it is convenient to close the App and windows that are not in use.
If necessary, you can also remove (un-install) applications that consume a lot of energy, such as WhatsApp or others.
All measures proposed by respected colleagues can be divided into two groups:
1. Minimization of energy consumption;
2. A real increase of battery life.
Regarding the first point, everything is clear - you need to spend energy as little as possible.
But the second item generates recommendations from quite suitable to extremely strange - on the verge of superstition.
The battery loses capacity during use. What are the main reasons? (I list only those that the consumer can influence).
1. Degradation of the electrodes;
2. Electrolyte degradation;
3. The growth of electrochemically inactive films both on the surface of the electrode and on the surface of the particles of the electrode, and the separator too.
For the battery, enemy number one is an overheating, both during operation and when exposed to external factors. Therefore, never run multiple applications at same time. The battery will pull everything at first, but with each charge it will make it worse and worse. Further, if you forget the phone, for example on a window, under direct sunlight, this means you yourself shortened the battery life, etc. - everyone can analyze possible situations. Second, in a fully discharged state, the electrodes of the battery are in a thermodynamically stable state (for example, in the classical lithium ion - C (carbon) and LiCoO2 (lithium cobaltate), in modern versions the materials may be different, but the principle remains. In the charged state, the materials of the electrodes extremely metastable (in the same example these are LiC6 and Li0.5CoO2) and therefore prone to decay. Decomposition products (I will not give list as this one is very long) are electrochemically inactive and therefore reduce capacitance and sharply reduce current characteristics (as reduce the cohesion of the electrode matrix). Therefore, do not store the battery in a charged state! (And heating of a fully charged battery is generally a complete fiasco!) You need to charge it before use. For the communicator, this rule does not work very much (as it is used 24/7), but for a camera, tablet or laptop - completely. And the last - all manufacturers write about it. Do not use "non-branded" chargers. If the battery should be charged up to 4.3 volts, then 4.32 is already a bad, but 4.35 - is tragedy. Also, at first glance, fast charging is very convenient, but it is better to charge slowly - the battery does not strain so much. Those, if it is possible to charge with less current - do it, and you will be happy.