Edited by ZenBalancer at 5-1-2017 16:49 |
Let's make this, issue #3 for your priorities:
My situation from 11 tablets bought for a webpage that displaying 24/7
It;s just been used for scanning barcode and print ticket.. and showing website connected to ethernet
I don't even care if battery is broken then is just needs to run on charger.
It is powered by charger 24/7..
With charing I had original adapters ( 3 exploded very dangerous! )
The question here is, why did the 8 batteries die, and 3 chargers explode?
I have worked with 2 high-end HP different model laptops, and both batteries won't last a few minutes without external power source, after being constantly on the external power source almost all the time for a 12-18 months, even when turned off, instead of normally used. Normally they should be discharged up to healthy points, and fully charged again. These laptops were the high-end 5-6 years ago, but the same thing probably holds true to most other devices from this point in time.
What followed is speculative, take it as a grain of salt.
I assume cheaper internal batteries is even worse, and those tablets' internal batteries are not designed to be continually "unused" and constsntly prevented from being overcharged, meaning the device being and becoming totally dependant on an external power source. The flipside is equally bad, not charging the tablets, and leaving them without a charge for months, has resulted in dead batteries, and becoming parasitic on the incoming power source, perhaps resulting in the tablet not turning on with the designed power source adapter.
I updated the "what to expect from Chuwi and their devices" thread, adding they're subject to "natural limitations" and are not designed for commercial nor as Enterprise solutions. So in this case, they are not designed for 24/7 powering of the tablets, without special workaround procedures to address those limitations. And also still should be expecting a reduced lifespan.
I assume the situation is due at least as far as the effect goes, it has also to do with the 24/7 use-case, even if without constant intensive chip-loads.
The chargers not being designed nor tested for prolonged 24/7 overheating, if the tablet is demanding on the power source, especially with parasitic batteries, thus the quality control adhering only to "normal charge time" designed and inspections. And not 24/7 stress tests, nor was that the design reference.
That combined with your commercial use-case without a workaround of power source interruptions after closing times, if possible, has possibly resulted in those exploded chargers as well. Because I assume they didn't explode too soon. And defective chargers and batteries isn't unheared of, and only "extreme" or "unusual" or "less frequent" situations result in the defect clearly becoming selfevident.
For such use-cases with devices not designed for them, power disconnect and normal battery discharge must be a part of the working procedure. Because of the "natural limitations" the device is subjected to, for those specs and budget. Bad luck might have a factor, but insights would offset that by a notice margin.
Hopefully you consider that the problem is not only Chuwi, it was also what you expected from budget tablets. Do you have experience with competitor tablets of the same budget class of competitors for such a commercial use-case with insufficient a work procedures to extend the lifetime of the device, and lower catastrophic malfunctioning risks?
To be honest I would not have thought about this pitfall, if you had not reported you situation. But this is now what naturally came to mind after.connecring the dots from my viewpoint.
Another factor is cheap PCB, limiting the effective usability lifespan. It's for entry-level consumers. You just made an assumption what they are supposed to withstand.
Sure, better design, better quality control, and higher budget, or a more specialized design for your use-case, such devices do exist. We just need to make sure the device we select, is wise to use for the intended use-case.
Again, just my viewpoint, and speculations based on what I know and have read here.
Edits: clarity, quote addition, typo + added the question.