Electronics > Projects, Designs, and Technical Stuff
Samsung phones are charging batteries with an ugly pattern?
aheid:
--- Quote from: The Soulman on February 03, 2019, 12:33:22 pm ---It is also possible that a higher peak current is needed than a usb charger could reliably deliver, perhaps for a tx burst. :-//
--- End quote ---
When using my S5 for navigation during bike trips in the summer, my external battery pack can't keep up and the onboard battery discharges, though a lot slower than if the external battery isn't connected.
That's with backlight to max due to sunlight, rendering of map, data communication for loading map, and of course GPS. In addition some ANT+ sensors to track.
Mechatrommer:
--- Quote from: jjman on February 03, 2019, 12:19:38 pm ---
--- Quote from: Mechatrommer on February 03, 2019, 09:32:53 am ---we need better proof, such as statistical data of batteries life vs charge/discharge cycle similar to what you have shown. do you have piles of dead batteries already from exhaustive test? if not, i can also say, xiamoi attempts to degrade charger, or toyota degrades their cars because they let them move, or God (or nature or whatever "something" (look at my signature) you like) deliberately degrade creation by letting them die old or mutilated born or whatever. there are always something to blame, without giving undisputable proofs and deeper level of thought ;)
--- End quote ---
If you want to contribute to the discussion please share how my interpretation of the data is wrong. E.g. how the current charging behavior is NOT leading to battery degradation. Do you have something to say?
p.s.
Here is why I think it is bad (sorry, requires reading: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries)
--- End quote ---
because you made a claim, i didnt, so you have to provide the references. i didnt say you are wrong, i only asked for references. except me from my observation that galaxy's battery can last up to more than 5 years which contradicts from your single case statistical plot, but that only 1 sample of statistical study which is poor on both of us, for me at least i know its poor. and you still dont give us good answer on what benefit can samsung gain by deliberately try to degrade battery life? and why? you need also to give your logical reasoning if you want to make a claim. from your link you still dont have a strong standpoint to make such a claim and i believe you have some misunderstanding there. for example number of cycle stated is cycle of full to flat usage. your data is similar to trickle charging (trickle on fully charged battery), which is recommended by most if not all battery manufacturers/ researchers. sorry if i have to ask you to read about trickle charging.
and even the battery manufacturer/researcher is unable to make a conclusive statement on this... from your link...
--- Quote ---Evaluating battery life on counting cycles is not conclusive because a discharge may vary in depth and there are no clearly defined standards of what constitutes a cycle (see BU-501: Basics About Discharging)
--- End quote ---
not as bold as, errr....
btw, this one needs reading as well...
https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
NiHaoMike:
If you really want to boost battery lifetime, stop charging at around the 80-90% range. Could be done by reprogramming a smart plug but one of those push button timers is a ready made solution that's "close enough".
jjman:
--- Quote from: Mechatrommer on February 03, 2019, 01:34:49 pm ---btw, this one needs reading as well...
https://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
--- End quote ---
Yes!
--- Quote ---Choosing a lower voltage threshold or eliminating the saturation charge altogether, prolongs battery life but this reduces the runtime. Chargers for consumer products go for maximum capacity and cannot be adjusted; extended service life is perceived less important.
--- End quote ---
Do you agree keeping the battery at max voltage is bad? If you say "no definite answer can be given" than what experiment would you like to see to have enough evidence? (I have some ideas but do not want to spoil the thread)
jjman:
--- Quote from: The Soulman on February 03, 2019, 12:33:22 pm ---It is also possible that a higher peak current is needed than a usb charger could reliably deliver, perhaps for a tx burst. :-//
--- End quote ---
Yep, that is also a good explanation (the data is based on 2 sec measurement interval no idea what happens in between), but ... judging from the link posted by @aymk it is not probably the case.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version