Battery Longevity and Charging Techniques? - Sprint HTC EVO 4G LTE

Here's the scoop, just purchased the car dock designed for the EVO from Sprint and installed it into my semi tractor. I've never worried about how long the battery will last, in terms of months and years. Now, the battery isn't easily replaceable and my phone will be plugged in 24/7. Should I limit the amount of time that my phone is plugged into a 12v outlet? Is it fine to keep the charger plugged in non-stop?
Sent from my EVO using xda premium

A quick note about my question. Just took my phone off the car dock and battery percentage dropped from full to 95% in a few seconds, the dock is limiting charge?
Sent from my EVO using xda premium

all my htc phones i keep plugged in my work van. m-f 9 to 14 hr straight. never had any issues. do it now with lte past month. no issues. you will be fine.

misfit0313 said:
Here's the scoop, just purchased the car dock designed for the EVO from Sprint and installed it into my semi tractor. I've never worried about how long the battery will last, in terms of months and years. Now, the battery isn't easily replaceable and my phone will be plugged in 24/7. Should I limit the amount of time that my phone is plugged into a 12v outlet? Is it fine to keep the charger plugged in non-stop?
Sent from my EVO using xda premium
Click to expand...
Click to collapse
First, it is not good to leave a phone on the charger 24/7. Doing that could cause the phone to over heat and mess up the soldering done to the charger port. I would suggest leaving your phone on the charger when it is needed. When your phone gets below probably 50 percent you can plug it back up, but don't just leave it on there. It is not fine to leave the phone on the charger non-stop. I hope I have answered your question.

Related

full charge ~ 1 hr

has anyone else noticed how quickly this phone charges? I just wanted to give some props to HTC.. I forgot to plug in the phone last night, and when I woke up this morning it was 0% dead. I plugged it in, and got ready for work, an hour later when I had to leave for work, it was at 96%!!
hell ya
Nice, haven't really paid much attention actually.
All I can say is that the ReZound is everything the my Thunderbolt should've been, including the battery charge and life.
Hmm.. I mainly just charge in my car & it seems like it takes forever(close to 3 hours). I spend most of my time driving otherwise i'd plug it into the wall and see. I guess it also doesn't help that the phone is also always being used while charging to.
However, battery life wise, it lasts 2 - 3 of constant use before it dies.
voxigenboy said:
Hmm.. I mainly just charge in my car & it seems like it takes forever(close to 3 hours). I spend most of my time driving otherwise i'd plug it into the wall and see. I guess it also doesn't help that the phone is also always being used while charging to.
However, battery life wise, it lasts 2 - 3 of constant use before it dies.
Click to expand...
Click to collapse
It will take longer to charge from a USB port and a car charger....won't take nearly as long when plugged into the wall. Just an fyi
Sent from my Inc HD
yeah, the motorola car charger or the htc one seem to be the best bet..you have to look at amps.
most ****ty car chargers are like 500ma, which will take like 3-4 hours to charge..you have to get the ones that match the AC charger, so around 1amp (1000ma) and you're set. the motorola is the closest i've seen, at like 950ma or so. charges it pretty well.
i have the motorola p513 rapid car charger & that's the one that seems to take forever. i've also got a 400watt power inverter & have tried just using the cable & wall plug that came with the phone and it doesn't seem to make much difference either. i've tried it in both the limo and my van... i know it's not a problem battery-wise with the van as there's 6 car batteries in it.
shazbot!...
I have the extended battery for mine, it seems to go from 10% to 100% in about four hours. I think for most phones it'd about three hours or so for a stock battery. So it looks like it does charge faster for me as well.
sent from my rezound that is waiting for permanent root
I ran my phone till it died today. I have had it on the charger for 1 1/2 hours, still barely 50%, I think you were on crack man. I was charging the phone with it off for the first hour too.
AtLemacks said:
I ran my phone till it died today. I have had it on the charger for 1 1/2 hours, still barely 50%, I think you were on crack man. I was charging the phone with it off for the first hour too.
Click to expand...
Click to collapse
i used to have this problem until i found there was a difference between charging cables and chargers. I dont mean the amperage size, i mean, some chargers/cables put your phone into USB charging mode, which is much much slower than AC charging.
THere is an app on the market called 'current widget' that can tell your charge rate. I used it on an older phone that was compatible with the widget (rooted rommed and cust kernel) and found that the charger I was using wasnt "AC" charging my phone, even though it was an AC charger. I went through a couple of cable charger combinations until i found the ones that worked right.
I have a USB car charger too (the kind you just plug a USB cable into). Using the widget i found that the USB cable I was using in my car was not 'AC' Charging the phone, and as a result, if i used navigation or anything like that, the phone would deplete power faster than it was getting it. I changed cables and problem was solved.
You can download the widget and use it on the rezound, but it does not update correctly, nor does it seem to be as accurate as it should.
For example, if I am not charging the phone, it should say "0 mA, but it does not. I have noticed though that when I am getting a good charge, the charging rate does show an increased rate, and because I am failure with the app, ive used it to confirm the charging rates.
You can try to download the app and run it. Plug in your phone, and look at the 'mA'. While its not charging it will be ~100 or so. during charging it should be up in the 500-600 range. but the app does not update as fast as it should, so you have to let it sit a bit before the number will change (normally it changes in realtime) but after charging for 5 min or so , if you still see numbers <200 you are not charging at the optimal rate. Try a new charger / cable.
I have 6 chargers, lol. All of them are 850mA chargers.
Here's a screenshot from this morning, I went to bed with at at 5%, and looks like it was full charged within 2 hours time. Not bad!
msticlaru said:
i used to have this problem until i found there was a difference between charging cables and chargers. I dont mean the amperage size, i mean, some chargers/cables put your phone into USB charging mode, which is much much slower than AC charging.
THere is an app on the market called 'current widget' that can tell your charge rate. I used it on an older phone that was compatible with the widget (rooted rommed and cust kernel) and found that the charger I was using wasnt "AC" charging my phone, even though it was an AC charger. I went through a couple of cable charger combinations until i found the ones that worked right.
I have a USB car charger too (the kind you just plug a USB cable into). Using the widget i found that the USB cable I was using in my car was not 'AC' Charging the phone, and as a result, if i used navigation or anything like that, the phone would deplete power faster than it was getting it. I changed cables and problem was solved.
You can download the widget and use it on the rezound, but it does not update correctly, nor does it seem to be as accurate as it should.
For example, if I am not charging the phone, it should say "0 mA, but it does not. I have noticed though that when I am getting a good charge, the charging rate does show an increased rate, and because I am failure with the app, ive used it to confirm the charging rates.
You can try to download the app and run it. Plug in your phone, and look at the 'mA'. While its not charging it will be ~100 or so. during charging it should be up in the 500-600 range. but the app does not update as fast as it should, so you have to let it sit a bit before the number will change (normally it changes in realtime) but after charging for 5 min or so , if you still see numbers <200 you are not charging at the optimal rate. Try a new charger / cable.
Click to expand...
Click to collapse
You know current widget shows how much your phone is using right? It never says 0mA when your phone is charging because your phone is using current when it is in use. It never goes to zero at any time actually unless your phone is dead.
Sent from my ADR6425LVW using xda premium
joshnichols189 said:
You know current widget shows how much your phone is using right? It never says 0mA when your phone is charging because your phone is using current when it is in use. It never goes to zero at any time actually unless your phone is dead.
Sent from my ADR6425LVW using xda premium
Click to expand...
Click to collapse
that is not the way it worked with the droid charge with a custom kernel. It showed your charging current. or more accurately, the amount of current that was going to the battery for charging. When the charger was unplugged, it showed 0mA.
Maybe we are talking about different apps
that is really fast. I wonder if that is why some of them are overheating and going into bootloops...
nrfitchett4 said:
that is really fast. I wonder if that is why some of them are overheating and going into bootloops...
Click to expand...
Click to collapse
Good point... They may not be regulating the rate they are charging properly.
Wait aren't our wall chargers one amp? Why's it showing around 600 ma?
Sent from my ADR6425LVW using XDA App
jayochs said:
Wait aren't our wall chargers one amp? Why's it showing around 600 ma?
Sent from my ADR6425LVW using XDA App
Click to expand...
Click to collapse
even with a 2amp wall charger I bought on amazon, my phones never get above about 600mah charge.
joshnichols189 said:
You know current widget shows how much your phone is using right? It never says 0mA when your phone is charging because your phone is using current when it is in use. It never goes to zero at any time actually unless your phone is dead.
Sent from my ADR6425LVW using xda premium
Click to expand...
Click to collapse
Hehe... That "Current Widget"... When I use my Belkin USB car charger dongle, it fluctuates between 100 - 300mA... When I use my Power Inverter, it's 400 - 900(depending if the engine I'd running or not.
The bizarre thing though, is when it's not even plugged in/charging, the widget still shows mA fluctuations and makes me wonder if the thing is even working or not.
Alright peeps, I just got this Belkin 2.1amp (2100mA) usb car dongle "rapid charger" from Walmart. The packaging says it's for tablets so I'll see how it holds up against the mighty Rezound.

[Q] Defective wall charger?

Anybody have issues with the supplied wall charger? I started using the HTC charger only recently (was using my old BlackBerry charger just because I was lazy and didn't want to switch them out on my nightstand), and the other morning my phone was stone dead. No orange notification LED, nothing. I thought I had simply lost my original 1620mAh battery, even though I have only used it about 10% of the time I've had my phone (I put a HTC extended battery on it in the first week, only recently switched back to the slim battery so I could bundle the phone with a headphone amp). I put the extended battery on it yesterday, and this morning the phone showed it was fully charged. I take it off the charger, and in a matter of moments I get a message something to the effect of "your phone is using more current than the charger can provide... please close unnecessary applications". Also, the battery indicator is still showing it's connected to the charger when it's not. I pulled the battery, reinserted, then my previously "fully charged" battery now shows in the red and "less than 3% charge". WTH?
In my panic yesterday, I already ordered 2 new HTC 1620mAh batteries, though my original one now seems to be coming back to life on a Motorola charger. May not be anything wrong with it after all.
Sorry for the long-winded and wordy post... But, has anybody else experienced this wackiness??
On edit: I forgot I replaced the BlackBerry charger on my nightstand with a Motorola charger, and that's what's charging the phone, now.
Basically, throw away the blackberry and motorola charger. The Rezound charger is rated at 1 amp, which is enough to charge and run the device at the same time. Any less, and you need to shut the phone off to charge. Most cellphone chargers are rated around 700 ma or less, which isn't enough to charge while the phone is on. Use the stock charger.
GrayTheWolf said:
Basically, throw away the blackberry and motorola charger. The Rezound charger is rated at 1 amp, which is enough to charge and run the device at the same time. Any less, and you need to shut the phone off to charge. Most cellphone chargers are rated around 700 ma or less, which isn't enough to charge while the phone is on. Use the stock charger.
Click to expand...
Click to collapse
I think you missed the point of my post... I didn't start having problems until I started using the HTC charger! The phone charges/operates perfectly on the Motorola and BlackBerry chargers.
Freedom First said:
I think you missed the point of my post... I didn't start having problems until I started using the HTC charger! The phone charges/operates perfectly on the Motorola and BlackBerry chargers.
Click to expand...
Click to collapse
Stock battery?
The other chargers may have damaged your battery. You might need a new one.
GrayTheWolf said:
Stock battery?
The other chargers may have damaged your battery. You might need a new one.
Click to expand...
Click to collapse
I've been using the HTC charger for about 1 month, now. Problem first arose while using the stock 1620mAh battery, and when it went totally dead on the HTC charger yesterday morning, I put the extended battery back in. HTC charger did not properly charge the battery last night, so I'm back to using the Motorola charger (which is 850mAh, BTW). It's charging my extended battery just fine, and it even revived my previously dead 1620mAh battery, which the HTC charger killed.
There's nothing to suggest my oem HTC batteries are damaged in any way.
It's hard to believe that the charger would be defective. But, it might just be worth it to get a 1 amp charger online incase you need to use and charge at the same time. The 1 amp will also charge faster.
Yeah, I rarely ever have a need to charge my phone while simultaneously using it. My issues arose during typical overnight charging (phone on, but no usage). On rare occasions I may have need to plug it in while in my truck, and I've never had any issues with the car charger.
GrayTheWolf said:
Basically, throw away the blackberry and motorola charger. The Rezound charger is rated at 1 amp, which is enough to charge and run the device at the same time. Any less, and you need to shut the phone off to charge. Most cellphone chargers are rated around 700 ma or less, which isn't enough to charge while the phone is on. Use the stock charger.
Click to expand...
Click to collapse
Moti charges at 0.85 amps so it works fine, my phone works with it. My HTC one killed my two long usb cables.
Freedom First said:
Yeah, I rarely ever have a need to charge my phone while simultaneously using it. My issues arose during typical overnight charging (phone on, but no usage). On rare occasions I may have need to plug it in while in my truck, and I've never had any issues with the car charger.
Click to expand...
Click to collapse
Even if you aren't using it, it is still pulling for radios, and other junk that runs. You should shut your phone off at night while it charges. And it is good for it to shut off, clears memory and keeps your phone running smoothly.
My charger actually just went bad on me. I would get that voltage warning so I thought it was either the phone or battery but after trying a different cable everything is fine.
Sent From My HTC Rezound

Time the Note II takes to recharge

How long should our Note II take to recharge from 0% to 100%? Problem with practically all Android phones is that it just takes way too long to recharge. Last night I plugged my Note at about 1AM, depleted all the way down. When I woke up at 7AM, it was still at 70%. Does that sound about right for everyone? I understand that we have a huge battery capacity but the limitation with the microUSB port is definitely there.
no something is not right...my device recharges in 2.5hrs from below 10% to 100%
You using an outlet or CPU?
if CPU, are you directly connecting to a USB port or a hub?
My cpu charges so slowly compared to an outlet.
I'm plugged into the wall using the provided OEM charger.
pcpark87 said:
I'm plugged into the wall using the provided OEM charger.
Click to expand...
Click to collapse
You tried different outlets?
I would turn the phone off, try dif outlet, try charging it, see if it is any better.
If no, probably something hardware related.
if yes, probably something you have installed then i would just restart from stock.
It takes me about 2-3 hours with the oem charger.
Sent from my SCH-I605 using Tapatalk HD
I've been having this problem too, and I can't really pin it down. I'm using the charger that comes with the S3,which is only rated at 1amp so I know that's the biggest factor. However, sometimes it charges to full in a few hours, other times after a night on the charger it will have only made it to 60% or so. The real stumper is that it only tends to drain about 1-2% an hour in deep sleep, so it's not like it's draining faster than the charger can keep up. It seems completely random. I'm ordering a 2amp charger to see if it helps, im sure it will, but I'm just confused by the random nature of this.
Yea something is definitely wrong. Mine charges in about 2.5 hours from near 0%. Try a different outlet
Sent from my SGH-T889 using Tapatalk 2
I use the cable the phone came with and I can go from 2% battery life to 100% in about 3 hours. Hella fast, luv it.
Sent from my SCH-I605 using xda app-developers app
Yeah about 2-3 hours is my usual charge time from 20% to 0% range respectively.
I still can't help but feel that that is somehow slow though. Can't tell, it's been so long since I had a small battery I don't know what a fast charge is nowadays.
Going from zero is way different than going from 1% the battery tries to protect itself so it trickle charges for a while. Honestly going from 10-100 should not take more than three hours probably closer to two
Sent from my SCH-I605 using xda premium
Mine seems like it takes about 2 hours maybe even less from 15%
Sent from my SCH-I605 using Tapatalk 2
DJ1994 said:
Going from zero is way different than going from 1% the battery tries to protect itself so it trickle charges for a while. Honestly going from 10-100 should not take more than three hours probably closer to two
Sent from my SCH-I605 using xda premium
Click to expand...
Click to collapse
True that, the that.
Sent from my SCH-I605 using Tapatalk 2
not sure if this helps, but do you have light manager installed? I had an issue when I first downloaded it and set it up, that night when I went to charge it it would charge VERY SLOW...I finally isolated the issue to light manager....I uninstalled it and reinstalled and it has been fine ever since. The Note 2 for me now charges faster than any device I have ever had.
pcpark87 said:
How long should our Note II take to recharge from 0% to 100%? Problem with practically all Android phones is that it just takes way too long to recharge. Last night I plugged my Note at about 1AM, depleted all the way down. When I woke up at 7AM, it was still at 70%. Does that sound about right for everyone? I understand that we have a huge battery capacity but the limitation with the microUSB port is definitely there.
Click to expand...
Click to collapse
Hi,
This is what I have found. Sometimes when the microusb end is plugged into the phone that the phone charges at usb rate instead of ac which is wall outlet. I only have this problem with a standard usb cable in the car. Will change it soon but. What you can do after you plug in the microusb into the phone goto settings then battery and see how the phone sees the charging its getting. It will say either usb or ac. Ac is full charge rate usb is much slower since usb like off a pc or laptop has a lower output to your phone.
If you see it takes more than 3 hours to charge your phone and it says ac in settings then you definitely have a problem with either the charger, usb cable or phone.
Thanks,
Bryan
If you're using the cable and charger that came with the phone, you have a problem. Based on what you reported, I'd say you're using a 1A or less charger.

[Q] HOX+ no longer charging!

So the phone stopped charging! Is there a way to open the damn thing, or I am screwed here? tried multiple chargers, no hope...
Never rooted, it's purely stock, so it's def a hardware issue..any ideas?
I have had one replaced after a similar issue.
Try charging it from a computer usb port with the stock cable. I think the battery charging logic is very strict when the phone is run flat. I never let mine run out any more.
IMHO you should ask for a replacement device, I also think this device is defective. Don't waste your time go to your provider or call HTC.
My phone went to 13% batter and I did not have the stock charger but a blackberry charger the phone was charging for 8hrs over night and did not go over 13% ...I called att for a replacement and att told me that a few people from HTC were talking about the one x plus and saying that people should t let the phone go past 50% battery which for me is extremely hard to do apparently its harder for the phone to charge
Anyways I bought a oem HTC charger and notice that the charging output was 1amp compared to the blackberry charger which was 0.5amps ....now my phone fully charges when at 14% battery to 100% in about two and half hours and seems to hold charge longer so I canceled the replacement....
So look into that oh and I used a iPad charging block once and the charging indicated usb charging only iPad charger is outputing at 2.5amps so amp specific is vital with this phone
Sent from my HTC One X+ using xda app-developers app
yokozuna82 said:
My phone went to 13% batter and I did not have the stock charger but a blackberry charger the phone was charging for 8hrs over night and did not go over 13% ...I called att for a replacement and att told me that a few people from HTC were talking about the one x plus and saying that people should t let the phone go past 50% battery which for me is extremely hard to do apparently its harder for the phone to charge
Anyways I bought a oem HTC charger and notice that the charging output was 1amp compared to the blackberry charger which was 0.5amps ....now my phone fully charges when at 14% battery to 100% in about two and half hours and seems to hold charge longer so I canceled the replacement....
So look into that oh and I used a iPad charging block once and the charging indicated usb charging only iPad charger is outputing at 2.5amps so amp specific is vital with this phone
Sent from my HTC One X+ using xda app-developers app
Click to expand...
Click to collapse
WOW, WOW, hold it. The golden rule for a battery charging, the best charging power should be 10% of the battery capacity. That means, that HOX+ battery of 2100 mAh should be charged at maximum output of 2.1 A. Vah, don't catch me in theory, but more than 2.1 amp charger really damages your battery.
In my case though, it stopped charging randomly, battery was at around 40% when I noticed the problem. I tried different wall chargers, car charger, USB, the damn thing just stopped charging. Only option I have is to send it to HTC is and have them replace/repair it.
Charging Socket Is Loose!!!!
alizawi said:
So the phone stopped charging! Is there a way to open the damn thing, or I am screwed here? tried multiple chargers, no hope...
Never rooted, it's purely stock, so it's def a hardware issue..any ideas?
Click to expand...
Click to collapse
Just to add my sorry story in here too, over the Bank Holiday weekend i woke up to find my phone hadn't charged over night and is now dead as a dodo.
Tried multiple different charger attached it to my laptop and nothing but then i noticed that the lead was moving around in the socket when attached to the phone so i think something has broken internally!!
Can anyone tell me if this will be a warranty repair/replacement as i am calling my phone supplier this morning to get it replaired as i have only had the phone for 4 months?
Just don't wanna be caught out with "It's not covered under your warranty", speech from the supplier.

Safe to use wireless charging overnight?

Just as title says... is it safe as if it were plugged into an outlet?
I don't see why not.
I have done it a few times already. Just stays slightly warmer I think. I use a pma wireless charger if that makes a difference or not.
I got the official Samsung one best buy gave out. Think that's Qi
Sent from my SM-G925V using XDA Free mobile app
Not too confident to put it on for wireless charging overnight.. Would get really got by the morning
Sent from my YOGA Tablet 2 Pro-1380F using XDA Free mobile app
This is why I wish manufacturers would start posting maximum surface temp specs for their chargers.
With that said, I'm guessing that Samsung's is reasonably built and won't get too hot. It also helps that part of the device hands "off" of the charger (that's also part of why I prefer circular chargers to rectangular ones).
Just make sure you keep the charger itself on a cool surface, and if you're one of those people who likes it to be 85 degrees in your house, you might not want to leave it on overnight. You could honestly probably rig the thing to vibrate itself off of the charger after a certain time lol.
I have been charging my S5 wirelessly every night for the past 6 months. I just used a low amperage charger so that it does not charge too quickly/ heat up too much. I am going to do the same with my S6 Edge.
Szadzik said:
I have been charging my S5 wirelessly every night for the past 6 months. I just used a low amperage charger so that it does not charge too quickly/ heat up too much. I am going to do the same with my S6 Edge.
Click to expand...
Click to collapse
You mean you bought a charger with low amps or you use a low amp plug that's not necessarily for the charger?
Sent from my SM-G925V using XDA Free mobile app
Powell730 said:
You mean you bought a charger with low amps or you use a low amp plug that's not necessarily for the charger?
Sent from my SM-G925V using XDA Free mobile app
Click to expand...
Click to collapse
I use an original Samsung wireless mat and am using a low amp wall plug with it.
I got the duracel power mat that was from amazon.com and I leave it on overnight. The power mat seems to not stay constantly charging it. When I wake up my battery is full and it's not excessively overheating. It's a PMA charger, not a Qi one.
-NVE
Well I've got the original Samsung Qi charger with the fast charge plug for the phone and I plan on charging mine overnight tonight. If the phone blows up I'll report back! I doubt it'll be an issue as the charger will surely only draw as much current from the power supply as it needs, and in-turn charge the phone at the recommended rate. I've been topping it up throughout the day on the wireless pad while I set up the phone and while it got warm I wouldn't say it got overly hot.
Edit - Charges quite fast on the wireless pad! Only been on there about two hours and it's charged from 24% to 97%! Certainly quicker than my old Nexus 4 charged. Was warm when I picked it up but will keep it on the pad overnight anyway to keep it topped up and I'll report back if it explodes!
Kiwi_Dude said:
Well I've got the original Samsung Qi charger with the fast charge plug for the phone and I plan on charging mine overnight tonight. If the phone blows up I'll report back! I doubt it'll be an issue as the charger will surely only draw as much current from the power supply as it needs, and in-turn charge the phone at the recommended rate. I've been topping it up throughout the day on the wireless pad while I set up the phone and while it got warm I wouldn't say it got overly hot.
Edit - Charges quite fast on the wireless pad! Only been on there about two hours and it's charged from 24% to 97%! Certainly quicker than my old Nexus 4 charged. Was warm when I picked it up but will keep it on the pad overnight anyway to keep it topped up and I'll report back if it explodes!
Click to expand...
Click to collapse
Mine made it through the night without exploding lol... in fact, mine was cool to the touch and was not even charging when I picked it up... I think the samsung charger must shut off once the phone reaches 100%
Edit: the technology must be built into the s6 edge because I just put it back on once it dropped to 99% and it charged to 100 then the light on the charger turned green, the phone lit up and said fully charged and then it was no longer charging. Definitely seems safe to leave on overnight.
Sent from my SM-G925V using XDA Free mobile app
Powell730 said:
Mine made it through the night without exploding lol... in fact, mine was cool to the touch and was not even charging when I picked it up... I think the samsung charger must shut off once the phone reaches 100%
Edit: the technology must be built into the s6 edge because I just put it back on once it dropped to 99% and it charged to 100 then the light on the charger turned green, the phone lit up and said fully charged and then it was no longer charging. Definitely seems safe to leave on overnight.
Sent from my SM-G925V using XDA Free mobile app
Click to expand...
Click to collapse
My findings too! Like yourself, phone was cool to touch, and light on charger (and phone) had turned green. :good:
Which is good Wireless charge with a 2amp out
Safe Wireless Charging
I am a traveler who takes a lot of photographs with my iPhone and Samsung S6 and so far Wireless Charging has been working well for me. I have proved that in many occasions while currently here in Southeast Asia (Cambodia as of this writing). Before leaving the US I made sure I was equipped so I shopped around and found a variety of safe Wireless Charging devices. IN my travels I would find myself tired and exhausted but need to charge so tendency is I fall asleep and wake up the next day and the device has cooled down after reaching 100% (during my sleep presumably). Look for devices like these.
I hope this helps!

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