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Help Non-removable batteries, why?

I very rarely use a computer USB port to charge, but usually have my M9 charging all night on the wall charger and the same goes for my wife's M7, both have non-removable batteries. There is no sign of any deterioration in battery performance on either device (the M7 is almost 4 years old).

Taking the point made by @scary alien, I think it's important to only use the OEM chargers.

;)
 
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I have an S5. It has the capability but the receiver coil is not built-in, so you have to install either the OEM wireless charging back or an aftermarket coil that fits under the original back. I did the latter, because it's a lot cheaper and also doesn't prevent use of a case. The Samsung wireless charging back adds a small amount of thickness which is enough to keep almost any case from fitting.
As to charging with a case on, most standard charging pads will be rated for a maximum gap of 5-8mm. It's best to look for one that's rated for 8mm so it is more likely to work with a case. I have a fairly thick case on my S5 (silicone inner/hard-shell outer) and my charging pads work just fine.
 
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Hi all, been reading regarding charging batteries to 90% and re-charging at 40%.
How exactly do we do that. I tend to plug mine in at night with a whatever charge is left and receives overnight a full charge. I suppose someone needs to design an app to control the amount of charge and to warn you when it's 40% or a special type of charger. Is there one?
Tks
 
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I suppose someone needs to design an app to control the amount of charge and to warn you when it's 40% or a special type of charger. Is there one?

Kind of. Qnovo's adaptive charging software will be generally available on the Qualcomm SD835 platform, and I expect it to be quickly adopted on others.

It was included by Sony on the Xperia XZ and is indeed "intelligent". It learned quickly that I normally charge my phone overnight, and that it usually comes off charge at 7.15am. Now, regardless of when I connect it and how depleted the battery is when I do so, it's fully-charged when my alarm goes off.

Don't get hung up about nannying your battery. Modern Li-ion packs are very robust and both they and their 'host devices' have ample safety circuitry. You can't over-charge a Li-ion pack. The big no-no is a forced depletion to 0%... that will activate safety fail-safes and, if you're unfortunate, render your battery useless.
 
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I wouldn't worry too much. The batteries are pretty tolerant as long as you don't abuse them. So don't run them flat more often than you can avoid, and don't keep topping them up every time they drop a couple of percent. Otherwise you'll be fine.

Now I'm worried...I was following this thread and someone said that Li-ion batteries like to be topped off. So I have been keeping my phone on a charger every time I get near one for long enough to top it off. Usually that means around 85% or more often around 93% (to pick a number from the last several hours). I don't worry if I'm out and about but when I'm hone or in the shop (most of the time) the phone is on the charger.

Is this harmful or bad practice?
 
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Now I'm worried...I was following this thread and someone said that Li-ion batteries like to be topped off. So I have been keeping my phone on a charger every time I get near one for long enough to top it off. Usually that means around 85% or more often around 93% (to pick a number from the last several hours). I don't worry if I'm out and about but when I'm hone or in the shop (most of the time) the phone is on the charger.

Is this harmful or bad practice?

I keep mine plugged-in and charging whenever I'm at my computer (home and at work), so outside of night time (I don't charge it on/from my nightstand), it's plugged-in...

I wouldn't worry :).
 
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Seems like battery post is needed again with how to make batteries last longer than 2 years.

Anyway the gist is, basically, batteries work by ion movement, and like a machine, these ions wear out over time due to use. And similar to machines, heavy use wears them out more. You're more likely to break an engine by running it for 1 day at max rev, than running it over a month at half capacity. The smaller the depth of discharge, the lower the wear. Lab tests have concluded that when you constantly discharge from 100 to 0, it allows you betwrrn 300-500 charge cycles before it starts to break down and not hold charges. More specifically, when you reach that magic number your battery can only hold 75% of it's original charge. That's typically 1-2 years of use if you charge once a day. And heavy abusers charge more than once a day, so that decreases the time span to however many weeks it takes them to reach 500 charge cycles.
Now, the increase in charge cycles is exponential, not arithmetical. So a depth of discharge to 50 before recharging will not give you 600-1000 charges. Rather it will give you 1200-1500 charge cycles. Mathematically, draining a 3600mah to zero for 300 charges gives you 1080000mah to burn through however short your battery life will be. On the other hand, using only 50% of the battery before recharging gives you 2160000mah to burn through before it expires after at least 1200 charge cycles. In other words, it stored twice more power for you to use. If you say, charge once every 24hrs, going always from 100 to 0 gives you at least 300 days. Recharging twice a day at 50% gives your battery at least 600 days of use before battery capacity deteriorates noticeably. Discharging to 75% before recharging actually gives you 2000-2500 charge cycles, making it even longer.
Basically the point is, always plug the phone in when given the chance. Don't wait for 50%, or whatever. 40% is an arbitrary number actually, not sure why it's chosen. Also, this is why one of the choices to auto activate power saving in the S7 is at 50%, so that it keeps the battery up as close to 50% as possible when you get the chance to plug in.

As for charging to 80%, this is because partial charge is better than full charge for lithium ion batteries. The ions are placed on stress to hold charges. Maximum stress is at 100% charge. And like everything else, stuff tends to break more. So not running it to 100% all the time will reduce overall stress experienced and increase the time before deterioration occurs. Personally I charge to 90%, and discharge to 40% or above. That's a 50% depth of charge, so that's good for up to 1500 charge cycles, plus whatever number of cycles the decrease in max stress gives me.

However, note that environmental temperatures also play a role in battery longevity.


Edit:

Hmm. Seems that I need to edit this. It's actually the depth of discharge that's important, not the percentage level left in the battery. Discharging from 100-50 will have the same effect on number of charge cycles as discharging from. 90-40, since both are a 50% discharge depth. They 90-40 discharge does have the advantage of having less full ion wear.

Whoaa... I didn't expect that much of information. You seem to know lots of things about batteries. Thank you so much for your answer! Now I know when there are people who have their batteries last for 2-3 years whereas I only could last around 1-2 years. I'll try your method then.
And some people say that you should do a full drain and a full charge every month in order to remind your phone the battery's full capacity. Is that true? Should I do that too?
Thanks again.
 
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Whoaa... I didn't expect that much of information. You seem to know lots of things about batteries. Thank you so much for your answer! Now I know when there are people who have their batteries last for 2-3 years whereas I only could last around 1-2 years. I'll try your method then.
And some people say that you should do a full drain and a full charge every month in order to remind your phone the battery's full capacity. Is that true? Should I do that too?
Thanks again.
It's unproven if that helps. It actually comes from the time when batteries had 'memories'. The danger in that is if you inadvertently go under critical discharge point, then that breaks the battery.
 
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Slug asks - Why! Good question, because:
This is from 'chanchan05's post.
Makes sense to me..

As for charging to 80%, this is because partial charge is better than full charge for lithium ion batteries. The ions are placed on stress to hold charges. Maximum stress is at 100% charge. And like everything else, stuff tends to break more. So not running it to 100% all the time will reduce overall stress experienced and increase the time before deterioration occurs. Personally I charge to 90%, and discharge to 40% or above. That's a 50% depth of charge, so that's good for up to 1500 charge cycles, plus whatever number of cycles the decrease in max stress gives me.
 
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Cheaper to manufacture isn't necessarily true. I really, really doubt that a plastic moulded chassis with a few clips to hold the back on is more expensive to make than an aluminium unibody.

As for planned obsolescence, it's been discussed earlier that there are many other considerations. The truth though is that for all the strength of opinion a small number of people post on forums (because all of us together are still a small fraction of phone buyers) removable batteries have not proven to be a significant selling point.

Conversely removable storage is, which is why despite Google's clear dislike of it all of the major brands have reversed decisions to remove it (with Samsung proving themselves either dumbest or most arrogant by trying this with the S6 and Note 5 after the others had already shown that it didn't work). If fixed batteries had received the same response the result would have been the same, but you can basically forget it now.
 
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Exactly. If they think that a slimmer profile/higher battery capacity/better waterproofing will draw in more people than the loss of user-changeability will lose they will throw those who prefer a removeable battery under the bus without a second's thought. The last hold-out amongst the big brands was LG, but all the indications are that the G6 will join the club in a couple of weeks' time.
 
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yeah, and that's cool. So far the fixed battery in my moto G3 is working fine - I charge it every night from 80 or 90%. Probably last forever. And actually a reduced expense for me as I would always buy spare batteries and charger at the same time I would buy a phone. Slim look is nice though I don't get to admire it as I immediately get a gel case so I don't break the screen as I did to one of my Atrix HD's (fun repairing it, though!)
 
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I have one more question. Most of the solutions and suggestions are made for Li-On batteries I guess. And I heard someone said "Most manufacturers use Li-On batteries" so I didn't go and check if mine was Li-On too. So I just checked and it's Li-Po. It says they don't have many cycles comparing to Li-On batteries. So... The suggestions you have, were those for Li-On or Li-Po? And why do manufacturers use Li-Po, is it cheaper?
 
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A couple of weeks back, PBS aired an episode of Nova called "Search for the Super Battery" that was really, really interesting and informative.

Batteries are being developed that are safer and have much higher capacity than ones we're using today.

I highly recommend watching this :).

Cheers!

http://www.pbs.org/video/2365946487/

Program Description
We live in an age when technological innovation seems to be limitlessly soaring. But for all the satisfying speed with which our gadgets have improved, many of them share a frustrating weakness: the batteries. Though they have improved in last century, batteries remain finicky, bulky, expensive, toxic, and maddeningly short-lived. The quest is on for a “super battery,” and the stakes in this hunt are much higher than the phone in your pocket. With climate change looming, electric cars and renewable energy sources like wind and solar power could hold keys to a greener future...if we can engineer the perfect battery. Join host David Pogue as he explores the hidden world of energy storage, from the power—and danger—of the lithium-ion batteries we use today, to the bold innovations that could one day charge our world.
 
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A couple of weeks back, PBS aired an episode of Nova called "Search for the Super Battery" that was really, really interesting and informative.

Batteries are being developed that are safer and have much higher capacity than ones we're using today.

I highly recommend watching this :).

Cheers!

http://www.pbs.org/video/2365946487/

Program Description
We live in an age when technological innovation seems to be limitlessly soaring. But for all the satisfying speed with which our gadgets have improved, many of them share a frustrating weakness: the batteries. Though they have improved in last century, batteries remain finicky, bulky, expensive, toxic, and maddeningly short-lived. The quest is on for a “super battery,” and the stakes in this hunt are much higher than the phone in your pocket. With climate change looming, electric cars and renewable energy sources like wind and solar power could hold keys to a greener future...if we can engineer the perfect battery. Join host David Pogue as he explores the hidden world of energy storage, from the power—and danger—of the lithium-ion batteries we use today, to the bold innovations that could one day charge our world.

Not available in the UK :thumbsdowndroid:
 
Upvote 0
A couple of weeks back, PBS aired an episode of Nova called "Search for the Super Battery" that was really, really interesting and informative.

Batteries are being developed that are safer and have much higher capacity than ones we're using today.

I highly recommend watching this :).

Cheers!

http://www.pbs.org/video/2365946487/

Program Description
We live in an age when technological innovation seems to be limitlessly soaring. But for all the satisfying speed with which our gadgets have improved, many of them share a frustrating weakness: the batteries. Though they have improved in last century, batteries remain finicky, bulky, expensive, toxic, and maddeningly short-lived. The quest is on for a “super battery,” and the stakes in this hunt are much higher than the phone in your pocket. With climate change looming, electric cars and renewable energy sources like wind and solar power could hold keys to a greener future...if we can engineer the perfect battery. Join host David Pogue as he explores the hidden world of energy storage, from the power—and danger—of the lithium-ion batteries we use today, to the bold innovations that could one day charge our world.
I'll check it out. Just updated my PBS account a couple of weeks ago. Antique Roadshow (US) is a must see.

I have yet to buy a wireless charging phone. Sounds to Nikolai Tesla to me.
 
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