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Currently I have one of the 4 x AA battery extenders which copes not badly for the average day trip, but often means getting a set of extra batteries while travelling.
This can be a compete pain if I am travelling on a longer trip and and have a stop on a bus/train in some place where I was not staying long enough to buy currency, and they dont take cards.
So...
How about soldering a USB cable onto one of these (last row is the UK price).
6V 4.5Ah SLA L21AC 7.99
6V 10ah SLA UD07H 13.99
6V 12ah SLA UD08J 14.99
6V 7Ah SLA N33FR 1034 3.99
Remember the Ah rating is for 6v - so 5 times the equivalent of one 1.2v rechargeable AA or 4 times that of a 1.5v disposable.
http://www.maplin.co.uk/module.aspx?ITAG=SPEC&ModuleNo=19363&doy=1m2#spec
The downside is they are obviously heavier, but have 3 times the capacity of standard rechargeables at under a kilo (but are small enough for the smallest side pocket on a rucsac).
The only downside is I dont know if they leak if battered.
Any suggestions/ideas?
wizardragon said:
The downside is they are obviously heavier, but have 3 times the capacity of standard rechargeables at under a kilo (but are small enough for the smallest side pocket on a rucsac).
The only downside is I dont know if they leak if battered.
Any suggestions/ideas?
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Have you thought about Li Ion or NiMh batteries, they give better performance, last longer and more importantly are lighter. I use them on a converted electric mountain bike......
Another option might be something like this...
Freeloader Portable Solar Charger
http://www.maplin.co.uk/Search.aspx?menuno=11936&FromMenu=y&doy=1m2&MenuName=Portable Energy Source
Specs say can run a PDA for 22hrs on its internal battery which is recharged by solar panels.
Good luck
Thanks
I had looked at the freeloader, but it does not really hold enough power as the battery drains at an alarming rate on trains or coaches as it tries to find cells, and using the net, playing music, keeping the display on, videos eats the battery power to much to make a freeloader viable on long journeys.
Also - a free loader is not really viable to get a recharge on a plane, or train or bus if not at the sunny window side.
However, could you recommend any larger capacity NiMh or Li ion batteries that don't break the bank?
Cheers
wizardragon said:
Thanks
Also - a free loader is not really viable to get a recharge on a plane, or train or bus if not at the sunny window side.
However, could you recommend any larger capacity NiMh or Li ion batteries that don't break the bank?
Cheers
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I take your point on both counts.
The Li-ion battery packs that I use on the bike are 36V 2Ah Bosch cordless power tool batteries. Perhaps the power tool battery option might be suitible, as batteries/chargers are readily available and you could get a cordless drill as a bonus.........
Thanks/
I have a Bosch cordless hammer drill and the battery fits under around and to the front of the grip, but its massive, probably heavier than my motorcycle battery too. The charger for it is also pretty big.
How did you drop the voltage to make it work to charge in a USB range, as wont the internal resitance of the PDA vary vastly depending upon which functions it is performing?
I had noticed maplins did battery boxes for projects and had thought about either a 4x or 8x of C or D batteries or a 4x or 5x, C or D cheapo Maglite clone just to use for the battery storage tube.
However the downside with C or D batteries is most of the rechargable ones dont hold much over 3Ah unless going into the heavy price range, although these are starting to fall.
Did you find any specific battery with a good shape/weight/price/capacity?
I'm going camping soon, and I need to be reachable 24/7, so I thought maybe a solar charger would work. Has anyone had any experience with these? How is the charge rate?
Any other cheap solutions? A charger that uses batteries would cost too much in batteries.
I tried a cheap eBay solar charger on my previous phone (HTC touch cruise). It was a charger with internal battery. So you could charge it during the day in sunlight and use it to charge your phone at night. At least... in theory. A full solar charge (about 1 week in the sun) gave my phone 10% extra juice I haven't tested it with my desire, but I expect it's even worse since the battery capacity is larger.
I'm not an expert, but I think the "mAh" capacity of the solar charger should be a lot higher (like double or more) than the device you're going to charge. For instance, if you connect it to a notebook (with battery capacities from 4000 mAh and up), the power will be succesfully transferred. But even then, I don't think you can fully charge your phone without draining the notebook battery completely. The Desire battery has 1400 mAh.
I would advise to look for better quality (and more expensive) alternatives. Like the solar chargers they use on campers to power a TV or fridge. Especially if you want to be reachable 24/7. If you want an emergency charger to give you enough power to make one phone call a day, a cheap solar charger will be sufficient though.
I'm a new user so I can't post link. But try googling "High Capacity Solar Charger and Battery w/ Flashlight (11200mAh)" and click on the 1st result. Bought that and am very happy with it. the charge rate is almost the same, if not the same, as the wall charger. it's got flashlight and mosquito repellent too.
theoretically it can charge the desire from zero to full 8 times before you need to charge it again. but you know it will be lower than that.
if you're looking for a cheaper solution then try googling "Solar Charger USB Hub" and click on the 4th result. but the charge rate will be substantially lower though. hope that helps.
I usually use the SOLIO solar cgarge, maybe a little expensive than the ebay but work very well, i use it about from 3 years and never had a problem.
I've testet him in very extrem condition.
You can see it on the solio web site, i have the classic version.
one of the best used by forces in iraq etc is the "solar monkey" make sure if tyou get one you choose the correct type for your device as different devices are more power hungry than others, i'd go for the top link the power traveller
links here
https://powertraveller.com/iwantsome/primatepower/powermonkey-explorer/
https://powertraveller.com/iwantsome/primatepower/solarmonkey/
https://powertraveller.com/iwantsome/primatepower/
Have a car charger and will be near your car when camping? Then just use that. Worked fine for me during a 5 day camping trip.
mouth said:
Have a car charger and will be near your car when camping? Then just use that. Worked fine for me during a 5 day camping trip.
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No. We're going backpacking. Tents and sleeping bags on our backs and sleeping in the outdoors. <3
Thanks for the links guys. I will check them out. I could attach the charger to my backpack with the cable going into phone which is in my pocket, so I can charge it while we're hiking. I'll look extremely geeky, but it'll work I hope.
I need to be reachable for work. I'm also bringing my laptop with me in case there is an emergency at work. Hurray for tethering!
It doesn't really do "camping in the wilderness" any justice though.
If you are in the UK i wouldn't waste your money on a solar charger...i'd spend the money on some nice waterproofs lol.
Got this here: Energy Trends ET 3000
Wondering why they don't have a language selection... http://www.energy-trends.eu But you can see it here:
http://cgi.ebay.com/ET-3000-Solar-Power-Cell-Phone-Device-Battery-Charger-/220641737521
Also described here: http://forum.xda-developers.com/showpost.php?p=7093929&postcount=13
But I assume that they don't deliver to the UK.
I have a 2 fold question. I was looking to get a wall to USB adapter for charging multiple devices such as this item for instance. I saw that the 2 ports (power iq?) charge with (up to) 2.4 amps and the other 3 ports charge with what it calls standard power. I am assuming this is somewhere around 1 to 1.2 amps or something like that. So my 2 questions: Is the 2.4 amps safe to use on my phone? (Nexus 4) And if it is, does the faster rate of charge shorten the lifespan of the battery? If I could just pop a new one in, it would be no big deal. But I'm limited on options with my N4, and opening cell phones in the past has not led to good results for me in the past. So I'm a little apprehensive on the idea of opening another cell phone to replace a battery I abused.
corbmonster said:
I have a 2 fold question. I was looking to get a wall to USB adapter for charging multiple devices such as this item for instance. I saw that the 2 ports (power iq?) charge with (up to) 2.4 amps and the other 3 ports charge with what it calls standard power. I am assuming this is somewhere around 1 to 1.2 amps or something like that. So my 2 questions: Is the 2.4 amps safe to use on my phone? (Nexus 4) And if it is, does the faster rate of charge shorten the lifespan of the battery? If I could just pop a new one in, it would be no big deal. But I'm limited on options with my N4, and opening cell phones in the past has not led to good results for me in the past. So I'm a little apprehensive on the idea of opening another cell phone to replace a battery I abused.
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Replacing the battery on the Nexus 4 is actually pretty dang easy for having a "non-replaceable" battery. You need a T5 TORX driver for the 2 screws at the bottom of the device. Take out the SIM card tray. Then you have to pry the 2 halves apart. They make plastic tools specifically for this, but honestly, you can use a plastic knife if you want. Metal objects will work too, but you might mar up the plastic where the halves meet. Be careful not to flex the back piece too much so you don't break the glass. Once apart, all you need is to remove the 2 screws that hold the battery's connection to the phone and pry the battery out (it's held in with adhesive). A brand new battery OEM off eBay costs $20. This is obviously something you don't want to do on a daily basis, but it's not like you're screwed and forced to buy a new phone if you kill your battery.
https://www.ifixit.com/Teardown/Nexus+4+Teardown/11781
The faster you charge a battery, the hotter it'll get, and that's what does the real damage. Tablets typically have upwards and including 2 amp chargers. The tech behind the batteries are identical (Li-ion/LiPo, it doesn't matter). Tablets come with more powerful chargers because a) bigger batteries take more time to charge, and b) a bigger battery will have more surface area, meaning it will disperse heat better, so you're less likely to damage it by using a more powerful charger.
Personally, I keep 2 chargers handy. A 1A for normally charging my phone (say, overnight, or during long hours at work), and a 2A for when I need to charge it as much as possible as quickly as possible. I don't really worry about the battery getting too hot with a 2A charger. Just don't leave it sitting in the sun, or on top a hot computer case or something like that.
Hey guys,
I was looking for some clarification on this topic.
So I heard on a youtube video (can't remember which, for the life of me, I just know it was an S8 video) that Wireless Charging has a better impact on battery in the long run.
They had stated that the battery would continue to hold a better charge over time, where as, if you used wired charging, the amount of charge the battery can hold over time would be much less to when you first got it.
Now I do know that battery gets worse over time, however, I have never heard anything about how wireless charging can increase the longitivtiy of the battery.
Maybe someone on here might have more information on this?
I will try to find that youtube video but if this is the case, then I will definitely need to get a wireless charger.
Regards
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
peachpuff said:
Unless this youtuber tested 2 phones for a year, charging one with a cable and another with wireless charging i wouldn't listen to what they're saying.
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Yeah I agree. A believe a charge cycle is the same regardless of how it is being charged.
Would never think wired charging puts more stress on battery life.
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
craigels said:
I think though that with wireless charging once the phone is fully charged the pad cuts out so it won't over charge
With a wired connection when the phone is charged its still consistently trying to charge which can end up damage battering the long term
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This is also what I have been wondering. If this is true then I may get a nice wireless pad for charging overnight (maybe the new official samsung "convertible" one but its damn expensive). I would have thought that the phone itself knows when a battery is charged and stops drawing the current from the cable though, so it would make no difference either way if that is true (but perhaps its not?).
But I did hear the exact opposite to op, that wireless charging was worse for the batteries, possibly due to the heat generated. But I don't know how true that is.
True
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
craigdamey said:
It's better for the battery because it charges it more slowly than a direct wired connection. There is no more heat buildup than using a wired charger, in fact likely less since the charging rate is lower.
As for the other comment that a wired charger doesn't shut off but keeps charging once the battery is full is patently false. The charging circuits whether wired or wireless are quite intelligent and gradually ramp down the charging current as the battery approaches capacity, ultimately delivering just enough current to keep the phone running. In a closed system the energy has to go somewhere and if the charger didn't do this you'd have 18W of power being dissipated as heat and a serious problem on your hands.
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For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. The induction used to transfer power wirelessly is obviously going to be far less efficient and will generate more heat to get even a slower transfer rate then getting the power straight down a cable (but if someone knows otherwise then feel free to correct me). But then I guess the slower charging rate might also put less stress on the battery which is probably good.
For the wired, what you are basically saying is that leaving a phone plugged in to a wired charger will not harm it since the current will have been reduced in the same way a car battery charger might reduce it to a "maintenance" mode once it is fully charged. So people are believing the old myths that you can overcharge a phone, which would seem to be impossible (although I do wonder why they keep slapping up notifications saying things like "FULLY CHARGED! UNPLUG CABLE!" as if leaving it plugged in would in some way damage it!).
Just saw this which explains the overcharging possibility (or lack of)
http://www.androidauthority.com/leave-phone-plugged-overnight-703078/
ewokuk said:
For wireless I believe the heat generated is more, it is about the method of delivering the power, not the speed. [/url]
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The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
craigdamey said:
The coils themselves don't generate a significant amount of heat, it's the battery itself that causes the phone to get hot. Slower charging means less heat, which is better for your battery so wireless charging will increase your battery life. As the article notes it is also best to keep your phone above 40% charge, partly because fast chargers slow down significantly after 50% to save the battery. That initial burst from 0-50% is done to save you from a dying battery but it takes its toll.
Also note that the S8/S8+ have new battery technology that provides much improved battery life. They're saying 5% loss of capacity after two years compared to 20% for previous generations.
As a bonus not continuously plugging/unplugging a cable from your USB port will make that last longer too. I hardly ever plug my S7 Edge into a physical cable, and I know quite a few people who have killed their USB ports and can no longer charge and or transfer data from them.
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Yeah I am torn at the moment between using cable and getting a wireless charger. I like my stuff charged asap but that's partly because i never leave it plugged in overnight and want it charged before bed (which I now know is not a problem anyway) and partly because i want to be able to unplug it to use it if i get a message or email, which isn't an issue with wireless as I can just pick it up and put it back on there after. I assume taking it off the charging pad and putting it back on will not have any detrimental effects to the battery. I am just trying to weigh up the pros and cons of each. All things considered I am leaning towards wireless, particularly if it isn't worse for the battery (although lets face it the difference in degradation between wireless and wired, is going to be so small it's probably not even noticeable after a couple of years by which time I would have a new phone anyway). I wonder if there is a better wireless charger which will be more future proof than the new convertible samsung one (in case I ditch samsung in future) and still give max speed, I would like one that is tilted so I can see the screen though.
My s5 is 3 years old and has only ever been charged by the massive double width "micro USB" cable which takes some force to get in and out of the socket. Still works perfectly though. Never had any usb port of any kind on any device fail, no idea what these other people are doing to kill them!
ewokuk said:
Yeah I am torn at the moment between using cable and getting a wireless charger.
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Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
craigdamey said:
Having the dock by my bed is very convenient. Just place it on at night and pick it up during the morning. If I need to grab it for anything I can without getting tangled up in wires and it even sits at the right angle so that the always on display becomes my nightstand clock/alarm clock. Once you've gone wireless you won't go back.
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I always turn my phone off at night anyway so I don't get disturbed by some spam message or something (I know I can probably set it up to be silent at certain times, but then why leave it on at all, using the battery for nothing). £70 for that Samsung charger though!! I know there are much cheaper ones but I am not sure they will charge at the same rate, the new samsung one charges faster than any previous wireless charger AFAIK and I would want one where the phone can sit up, and most are just flat. Hmmmm although the do have it for £50 on amazon sold by "fonejoy", still steep though.
This one looks good https://www.amazon.co.uk/CHOETECH-W...=UTF8&qid=1492192247&sr=1-9&keywords=choetech but not sure if itll charge at the same speed as the new samsung one and doesnt use a USB-C connector which probably rules it out. May as well just get the samsung one.
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
craigdamey said:
I use the US version of this and it works fine. https://www.amazon.co.uk/d/Mobile-P...d=1492192742&sr=1-5&keywords=rav+power+qc+2.0. The Fast Charging Dock comes with a cable so that should be all you need.
And yes, I have my Do Not Disturb settings to suppress notifications 10:30PM to 6:30AM. Wife complained she couldn't sleep with all that noise going on
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Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
ewokuk said:
Thats a wall charger? I'm talking about the charging pad itself. I believe the new Samsung one outputs 15w so is faster than any previous ones which are all 10w I think.
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There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
craigdamey said:
There are only two types of charging dock, standard and fast-charge. None of them output 15W to the phone. The expensive Samsung is just a fancy fast-charge dock so it will charge at the same rate as the Seneo and others that support fast-charge. The Samsung fast-charge adapter only provides a maximum output power of 15W (9V @ 1.67A) so it would require 100% transfer efficiency to charge the phone at that power, and in reality it's only about 65% so at most you'll see 10W versus standard Qi charging at around 7W.
All of the Seneo chargers I have coupled with RavPower or Samsung Fast-Charge adapters charge at the same rate (10W to begin with tapering off to 7W above 50% charge).
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Ahh ok, I will have to check out a few seneo pads.
If your using fast charging AKA Adaptive charging it shouldn't matter either way. The Fast charging port on the phone, and the wireless charging should go through the phone and the phone should automatically stop all charging going to the battery. This is the reason why if you were to leave your fast charger on all night whether it be Wireless or wired, you can pick your phone up at 99% or 98% instead of 100%. The phone stopped charging, then when it drops to a certain % it starts to charge up again.
As far as which is actually best for strain, it shouldnt matter because afaik to the battery its the all the same. Wireless charging just has some coils almost that send the charge wirelessly, but it still goes to the same place.
This is what I have read from google, so I am no expert on the subject, but it seemed pretty legit, and makes sense to me, a person with a Tech background. If anyone knows better please be my guest.
I'm going with wireless charging pads at home but a magnetic cable for in the car.
Not found a good car holder that has the wireless pad built in so I will stick with my ibolt for a bit longer
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There is no correct answer to this question. Battery life is function of many things -
1. Every battery has specified charge cycle. One full charge from min to max is 1 cycle. Two full charge from mid to max is also 1 cycle. So the more you use your device, charge cycles will come to an end more quickly. For example if you use two similar spec phones; first one you use heavily requiring full cycle charge everyday vs second which you use less and requires full charge every alternate day (or to phrase in other way, first is almost completely discharged by evening, second is half discharged). So the theory goes that second phone battery will last double the time than first.
2. Every battery articles you read, you will find recommendation to charge battery in specified current or usually slow charging. Today's battery technology should be immune to this but I still turn fast charging off. It is likely that not all the batteries are immune.
3. Heat is bad for battery. Some wireless chargers heat up. The TYLT VU that I use get uncomfortably warm when I place phone vertically (possibly coils do not align and multiple of them gets activated). Heat build up is there during fast charging too. If you play CPU intensive games and charge at the same time, phone gets warm. All this heat is working negative to the life span of battery.
4. Lithium ion batteries have less chemical stress when they are not fully charged or fully discharged. If you research you will find articles telling one to keep battery between 40% to 90%. Hence I usually do not charge to 100% and if I do, I watch or play games to bring battery level down. Search for best charge level to store lithium ion batteries, I think it is from 45% to 50%. This I guess keeps batteries at the least chemical stress state. So do your maths if you are type who likes to keep battery at 100% charge at all the times.
As you can see there is no straight answer to this question. Battery life is function of all these factors.
Added: I didn't read full article but you can check this link which speaks about impact of heat and leaving battery to full charge state.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Thanks for everyones input on this!
By the way, not sure if it has been mentioned, but this is a pretty cool read:
http://www.androidpolice.com/2017/0...ill-degrade-less-quickly-than-the-galaxy-s7s/
So looks like the S8 won't deteriorate as much over time!
I got the OEM samsung convertible fast charging pad but it doesn't come with a wall plug as I read somewhere (I guess thats just us in the UK getting screwed over yet again). The manual says "Use only Samsung-approved chargers that support fast charging (9v/1.67A, 9v/2A, 12v/2.1A).". So I need a wall plug that will be able to provide the fastest charging speeds from it (which I am guessing is one that does 12v/2.1A??). I dont think all the standard plugs with 2.4a sockets are going to do it right? The "30w" RAVpower one that craigdamey linked says it can do 12v/2A but only for QC3.0 (which I obviously wont get since its just being plugged straight into the charging pad), otherwise its 5v/2.4a. Not sure what one to get now. Theres an Anker 24w one but that says 2.4a per port (I know little about electrics and how these things work!).
Topic! I know cables can wear out the port. Never had a wireless.
Hmm... Personally I think wireless charger have a potential to do so... It does heat a lot (especially if you're wearing a case or loving in a quite hot place as I do)..
Cable charger is able to wear ports, but I don't think it is that notable.. My 1.5 year old S8 always use a cable charging, and I often put on OTG and DeX system.. But, until now, the port still holds out very well..
tdoto said:
Topic! I know cables can wear out the port. Never had a wireless.
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Wherever you charge,just have a small desktop fan to keep things cool,whether you charge wirelessly or not.
I place my phone on a stand or the QI Charger stand & direct the fan right at it.
I'm not a battery stat nerd,but,I'm guessing overall charging speeds will increase as well if you use a fan to keep the temperatures down while charging......
Wireless charging itself won't hurt the battery. Heat & frequent 100% & <20% charging cycles will hurt it more. Download AccuBattery from the play store and monitor your charging temperature. Depending on your environment, If it's below 40C while charging(mine is ~36C), it should be OK.
The way I do it is NOT charging it overnight, and top it up during the day between 40-80% using wireless charing stand. AccuBattery also has the alert feature when it charges till 80%, that's when I take it off the charging stand.
If you plan to upgrade in a year or so, don't worry about any of those as modern battery/charging circuit will take care of itself in such a short time. It shouldn't affect the battery life.
Oh yeah let's talk about this stuff. This is my bread and butter
Long story short. Yes it has the potential to cause issues. It's not so much the temperature but the fact it is being bombarded by 110-200ish khz. Is it something that a typical user will notice? No you are talking leaving your phone in a wireless charger for years at time. To that's why when you look at some quality chargers under the coil they have some shielding. Phones have this to. I haven't looked into the note 9 internally but I'm guessing the components that would be sensitive to that are shielded.
You should not need to worry about it. Leave it on for 12 hours a day. Heck I bet it could take a few years of 24/7 on one without an issue.
Temps. Most battery's can handle discharge at a temp of 60c for 30 min just fine. The max I think is around 75c where a thermal fuse blowes and the battery is gone. I haven't looked into the note 9's battery but I'm guessing it's close. So 60c is fine. Ideally you would wanna keep it around 45c but 60c won't hurt it. I have taken battery's to around 60c and never noticed any impact in performance. Just don't do this every day. 45c-50c is the max I would say that would not have an impact on it. I'll spare you from the chemical changes that occurs when they are exposed to high temps for long periods of time.
Electronics. 60c is nothing. Remember everything soldered in your phone gets heated to at least 150c for 3 min. The components may say they have a max op temp fo say 70c but that's specs for the hundreds of thousands of hours they spec the part for. People seem to think hitting a high temp is the end for some components when they have already been exposed to temps almost 3 times higher.
Wireless charging is fine. You don't need to worry about it.
I have a Samsung wireless charging dock(upright) and when placing my phone, usually position it with a bit of space between the phone and charge so that air would flow between them, which aids in keeping it cool while charging.
shinew said:
Wireless charging itself won't hurt the battery. Heat & frequent 100% & <20% charging cycles will hurt it more. Download AccuBattery from the play store and monitor your charging temperature. Depending on your environment, If it's below 40C while charging(mine is ~36C), it should be OK.
The way I do it is NOT charging it overnight, and top it up during the day between 40-80% using wireless charing stand. AccuBattery also has the alert feature when it charges till 80%, that's when I take it off the charging stand.
If you plan to upgrade in a year or so, don't worry about any of those as modern battery/charging circuit will take care of itself in such a short time. It shouldn't affect the battery life.
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Exactly what he says ^^
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Good info. Does the quality of the charger matter? Even qi certified ones range from $8-$40. How about standard vs quick charge?