Imagine a healthy person in his/her early twenties.
Working, playing, learning.
Burning the candle at both ends with no noticeable effects.
No real issues with sleep other than not ever wanting to partake, and energy for days. Seriously - days and days.
That is someone with a 100% battery life. The ones that can be fully charged from 0% in a matter of an hour. Maybe even less! They rarely reach 0% and a bite to eat or a little caffeine can boost them above 70% with no real effort. Add in that it takes several days of constant use to ever drain their battery, and you've got a great device. No diagnostics needed.
The battery life of some people with chronic illness may never reach 100%. There are apps constantly running in the background draining the battery. Malware trying to diagnose bugs constantly, apps with viruses that cannot be found, and malfunction and misuse. Any kind of malfunction or pain requires precious battery life. That's without any kind of normal use. Then, with active use, the battery life is drained twice as fast and then takes three times as long to recharge - often requiring several days or even weeks to reach even as high as 70% charged battery life.
There are no exchanges. No refunds. No replacements. Sometimes in dire situations you can get replacement parts, but it will never quite run the same way. You can remove parts entirely if they are filled with bugs, but then you are accepting inferior function. You choose low function versus no function, because that is your only choice.
Battery life is precious, but it is being all-consumed by problems within the system that cannot be fixed. The device spends 24 hours a day working to fix problems that have no real fix. Wasting battery life on background issues that no one can even see - that no one really understands.
The more issues in the device, the lower the maximum battery life becomes. The more background fighting, the less battery life available for normal use and function.
Constantly working with no progress to show for it.
The longer the device suffers, the more often it shuts down entirely from barely any use at all. It gets to a point where it has to be consistently plugged in at all times to recharge.
My bed is my recharging station.
I do not usually reach over 50% battery life, and that battery life is very precious to me. I do my best not to allow it to crash completely, but it seems to crash more and more with less and less use.
My wheelchair is my portable charge bank. It helps reduce the amount of energy required when in use.
I choose to see this as a positive thing. I still have options to preserve my battery life.
Find ways to preserve it - in whatever way you can. And, if possible, find ways to rebuild that energy level. I am trying to boost the battery percentage by slowly reintroducing some activity (like yoga) into my routine. Fingers crossed!