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Car Chargers and Charging Question...

I was curious about car chargers and I heard back in the day that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true? Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in so I was just curious if it will lessen the life of the battery..? Sorry if its dumb questions just curious

I personally use car charger as my main charger.
i used it also for the Herald and TyTnII... and i didn't feel any battery problem.
however you should pay attention for the charger brand/make.
i advise to have the original HTC one.

sguerra923 said:
... that if you use a car charger its actually bad for the battery because the power from the car isn't a constant "flow" is that true?
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during the start of the engine, the voltage level may drop and the charger may stop charging, but during the time you drive, there's no problem.
The generator produces about 100 A, so the 500 mA or 1 A current of your changer do not matter

So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?

sguerra923 said:
So what if you charge you phone for long periods of time even though battery is fully charged? Any neg effects?
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It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that). Over-charging batteries is one of the things that kills them. You can tell on your phone when it's in trickle mode, because the LED around the scroll wheel stops blinking (well, I think that's the notification for trickle mode-could be wrong).

Farmer Ted said:
It's not good for any battery to do that, but usually you go into trickle mode, which protects the battery (I don't know if the charger or the phone controls that).
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The phone. Otherwise you couldn't charge via USB

I think the "don't charge in your car or you'll damage your battery or phone" is mostly an urban legend. Yes if you buy a crappy USB cig adapter that doesn't provide stable 5v then good luck. That said, even cheap adapters should be able to provide a good 5v source. 5v regulators have been around for ages. I bought them by the dozen 20 years ago when I was a teenager starting to play around with electronics. Even back then, they were less than a buck each if bought in bulk. So stable 5v supplies are not hard to come by. Voltage dips during startup isn't much of a problem either since regulators (even modern switching ones) only requires 10-20% headroom to operate which means as long as you are seeing 6-7v at the cig adapter, you're good. Your car wouldn't even start if it dipped that low. More likely an issue is the voltage spike that might occur right after the engine starts and the alternator kicks in. Most decent regulators will handle those as well. Chances are, you'll blow your adapter before anything damaging goes to your phone.
Recharging batteries requires a "fixed" current source. Modern rechargeable batteries (Li-Ion, Ni-Mh, etc) have charging profiles for optimal charges. That just means they need different currents at different stages of their charge cycle. It became clear pretty quickly that it was better to build the charging circuit into each device which did the best job for the battery it was designed for. That's been the case since the early mid 90s I think. What this means is that pretty much all devices built to be rechargeable (whether the battery is replaceable or not) only requires a simple consistent voltage source. This is why we have the "Universal" chargers today and why they are so cheap. I would still not pay $20 for one though. I'll spend 10 to get the generic brand which is just as good without the brandname on the package. The funny thing is, most of these power supplies come from just a handful of overseas manufacturers so you might be getting exactly the same thing. The only one's I'd avoid are those really cheap ones like the like the ones you might see on ebay. Most of them are actually good but some less reputable sellers might have gotten reject stock form somewhere and is selling them. These units are rejected because they didn't meet voltage/current specs and the person that was supposed to throw them out sells a huge box of them to someone for $50 or some such.

sguerra923 said:
Second question is it bad if you leave your Fuze/Touch Pro plugged charging for over 8 hours a day because im at work Mon-Fri and I just leave it plugged in.
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Li-On batteries dont really have a problem with charging them from any state to full, no memory really. However if you have a full charge and leave it plugged in you can burn them out in which case they do not retain that charge for very long. It will over periods of time shorten the life of the battery. It usually wont happen on the first go (depending on how long after full you leave it charging.)
Safest way to keep your battery happy is not to let it drain to complete empty and to take it off the charger when its done.

Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..

sguerra923 said:
Interesting info guys.. so it looks like on the safe side that im not going to leave it plugged in for long hours..
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most modern battery chemistry has a life of around 1000 recharge cycles. It doesn't matter if they are full charges or half charges so even though there isn't a classic memory affect, it does nibble away at the recharge cycles. To put it another way, a given battery loses 1/1000 of it's capacity every time it's charged to full charge. Not really memory but just steady degration. All charging circuits today either stops charging or does trickle charge once full. BTW, trickle is a term that applies mainly to pb and NiCad betteries.. today's batteries actually use a form pulse charging for maintenance. Now this protects the battery from overcharging but if you leave it plugged in, the charging circuit will basically go into this mode of letting the battery drain a bit and then charging it. This will eat away at a batteries life. A real world example... my wife and I had near identical laptops ant one point. She left hers plugged in most of the time whereas I drained my battery each time before recharging. When her battery started lasting only 10mins on a "full" charge, mine was still at about 1.5hrs. It took her battery only a year to fail where mine didn't go dead (i.e. below 1hr per charge) until over 18months.
My advice is don't leave it plugged in but once it's about 20-30% of full it's ok to recharge. Hell, if you think about, 1000 recharges will last almost 3 years of daily charging. So what if it only lasted 2. Any of us would likely be on to the next phone or be willing to buy a second battery.

When I exchanged my Fuze for a new one at AT&T, the service person said my battery was bad, due to overcharging.(Battery had a slight bulge). She said leaving my Fuze plugged into my car charger and my computer(with charging turned on) degraded the battery. Phone was about 7 months old.
There is an option to NOT charge the battery when connected by USB to the computer.(kind of indicates no automatic charging control)
Well, I use my Fuze as a computer 12-14 hours a day. I want to see the screen, which means I need it plugged in either to the computer or car charger.
If I turn off recharging when connected to my computer, I end up with a dead battery pretty quickly, since I use it a lot as my business phone with a Bluetooth speakerphone.
The AT&T person said this information was given to them by HTC.

bigger capacity battery or get another device(netbook) that can sustain the 'abuse'?

bigger capacity battery won't solve it
Without it being plugged in, the screen turns off. Even a large battery wouldn't last with the screen on all the time, if even you could figure out how to make it stay on.
I had to plug in the earphone dongle and plug the car charger in to that, to get the screen to stay on in my car. Plugging the car charger directly into the phone, the screen would turn off no matter what I tried.
I guess I need to replace the battery every 8-12 months.

Yikes, there's so much misinformation about batteries in this thread, it's frightening.

so point us to better info
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..

hrothnir said:
All I know was that my battery was bulging a bit after 7 months of use, and it was holding a charge less and less.
And I reported what AT&T told me..
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I'm not saying your battery isn't broken, and I'm not saying your charger (part of the phone nowdays) didn't go haywire and break it. I AM saying, however, that leaving the phone plugged in didn't do it (unless, of course, your charging hardware was faulty, in which case you're screwed anyway).
Lithium-Ion batteries don't get overcharged, because they tend to explode. That's generally considered a no-no for batteries, especially in consumer devices, so the charging hardware is designed to stop charging when the battery is full. An occasional "topping charge" is applied (by some chargers) because of the self-discharge of the cells. I kinda doubt that our phones do that, though, because it's only something like 1h of topping charge once every 20 days.
Let me repeat this again for absolute clarity: lithium-ion chargers STOP CHARGING when the battery is full. Leave it plugged in as long as you want, and (assuming the charging hardware isn't broken) it'll be fine.

So you're saying what AT&T told me was bullsh**t
Not that I believe what AT&T says or the given reasons, which didn't make sense from a technical standpoint.
But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
And I did see the bulge, and AT&T did replace the battery under warranty.

But then you wonder why there is an option in the Fuze to NOT CHARGE the phone when connected to a computer using USB.
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Perhaps that option is available so when your laptop is not plugged into AC power, you can connect your phone without worrying about draining the laptop battery.

laptop
Seriously doubt that option was designed for laptops.
The phone would take very little from a laptop battery.
And would probably be labeled for laptop use.
I think that the phone drops a few % in power, then recharges, and does that constantly while plugged into a computer, causing the battery to waste the 800-1000 recharge cycles that it has.
Be nice if you could set the phone to not recharge when connected to a computer unless the power dropped 25% --or make it configurable.
Manually turning the charging off/on is impracticable.
Maybe a program can/has been written to cycle the charging off/on properly.

USB Battery/Solar chargers

Hi Guys
Im going to download festival in a week and need some extra juice and I was wondering if anyone any experience of any of the AA/AAA/Solar power usb chargers? Are they any good? How long will they take to charge a phone battery (in my case 1500mah)? Will one set of AA/AAA batteries charge a phone fully and how quick?
Example Ebay Items
Thanks!

I've got a small 12v sealed lead acid battery which I hook up my car charger to overnight. It's a little heavier than what your looking at, but is reliable and lasts ages. Battery and charger cost me about £30 total, but you could get a battery for about £15

im going camping mate with no car. Could be a bit tricky hehe

Monty Burns said:
im going camping mate with no car. Could be a bit tricky hehe
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Try these, I have the freeloader one (in silver) and its great, stores charge in its own battery for use later on down the line too...
http://www.iwantoneofthose.com/freeloader-solar-chargers/index.html
http://www.iwantoneofthose.com/power-monkey-explorer/index.html

Monty Burns said:
im going camping mate with no car. Could be a bit tricky hehe
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Thats what I'm talking about. It's a small battery weighs just under a kilo, but you can attach a car charger to it in your tent. I go to glasto most years and its been serving well for about 5 years now.

Freeloder are good.
Could try switching your phone off, save some juice and enjoy the festival?

ive tried one here in the states on my g1..it sucked...it charged it but it had to be directly in the sunlight, when it wasnt in the direct sunlight it would send a surge through my phone...i was told by tmobile to not use it because it could void my warranty.

I have the IceTech i-9005, and its served me really well. I use my Kaiser a lot, and at school, I'll usually charge it up with my solar panel during my 45 minute free period. Here's a link if you're interested. It's not too expensive either, it cost me only $90 from REI. It has a large 2000 mAh battery too, so it should charge your device with no problem.
And unlike some other chargers, it has a voltage selecter, so you can choose the voltage which works with your device (but 5 volts charges most stuff fine). It also has a standard USB port on it, so any USB charging cable should work with it (it also comes with a proprietary cable and some common adapter tips). And it also has overcharge and short circuit protection, so it won't fry your battery. And although it's kind of gimmicky, it even has a bright LED light built in.
And in addition, like most solar panels with batteries, it also comes with a wall charger, so you can charge the device without leaving it in the sun, and then use the built in battery anywhere.
Overall, I'm pretty happy with it, and I would recommend that you at least take a look at it before you buy any other solar charger.
Dave

bootx1 said:
Freeloder are good.
Could try switching your phone off, save some juice and enjoy the festival?
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Click to collapse
Ahh but then how would i be able to Facebook and make all my mates that aren't there jealous?

Portable Backup Power / Solar Power

Trying to find gadgets of the type "external portable power".
That is power sources that is light enough to carry in a backpack or pocket, and have a battery (or in my dreams a fuel cell...) that can be plugged into SGS mini usb port for "emergency" power.
Also of interest is solar powered solutions, maybe to charge said portable power device while relaxing at the beach.

I believe this is what you are looking for:
spider-foot. com/1900mah-extended-backup-battery-power-charger-for-cell-phones-with-micro-usb-charging-port-1900mic-p-759.html
Ive seen a solar + wind up one as well, but not sure how good that would work.

There are few micro usb backup battery packs. Some are sealed rechargeable batteries (like the one in above post) while others allows you to use standard AA size ones (these are good in an emergency).
But IMO better to have a spare battery. That way you don’t have to wait for the phone to charge, you get instant power. Since SGS s batteries are very small you can even carry one in your pocket.

Personally I'd prefer something that used AA/AAA batteries. That way I can carry LSD batteries, and I can use a proper conditioner/analyser/charger on them to keep them in decent condition. It also means the phone doesn't need to get turned off at any point - I find mine isn't great after a restart for quite a while. Finally very high quality batteries are not that expensive for AA/AAA and you know what you're getting, aftermarket mobile batteries can be a little bit risky and performance can vary.

I use a solution from Philips, it is called Power2Go. I use the SCE4430. Works great, only thing is that it does not support micro usb out of the box. But a standard micro usb cable does the trick. Used this also on a Nintendo DS.
http://www.philips.co.uk/c/universa...UNIVERSAL_POWER_SOLUTIONS_SU_GB_CONSUMER=true

[Q] Solar Charger
Hey guys,
First post here and it may end up costing me a bit soo..
Would it be possible to harvest one of these solar phone chargers you see on ebay and build it into the backplate of the phone?
I know it may not be powerful enough to charge your phone, but maybe we can extend the life when we just need those few extra hours.
So, really, does anyone know what we would need? I have little to know electronics experience so not sure what i'm looking for but i'm more than willing to actually do it if someone is able to explain what/how its done.

No, it's enough for you to charge a phone, even other more powerful device. But first of all you need a good solar cell.

i got one from DX it works fantastic!
4200mAh Portable Dual-Panel Solar Power Battery Pack for Cell Phones and USB Gadgets
http://www.dealextreme.com/details.dx/sku.40210
just leave it by any window, or light source and it turns it back into energy, then just plug your phone into the pack for recharge
you can easily recharge twice with a full charge
red light = charging
no light = off
green light = in use
comes with all the plugs for our phones
and a build in LED flashlight
it can also be charged via USB if you are in a hurry, and can't take advantage of the free light source recharge
i use it mostly for long outdooring like camping / picnics, and you know that even 3x1500 mAh will not last you for a day/week
you can get a full charge in just 1 day (from sun rise to sun down) even on a cloudy rainy sky

But what about physically attaching a panel to the back so I don't have to carry extra stuff? Is it possible? How would I wire it up?
Sent from my GT-I9000 using XDA App

that works, but you wont be able to use the phone for like a whole day meanwhile waiting for it to charge, and be drained almost instantly

Have a look here>>>http://tinyurl.com/y2nrvsv
I have ordered one of these will do a small review when it arrives>>>http://tinyurl.com/2fun3k6

I have this traditional solution for emergency charging: http://www.portablepowersupplies.co.uk/
They have Solar Charger, too.

that solar one from portable uk is okay, i only like the "bag" idea of it, but it's shy in power & recharge rate when competing againts the 4200 mAh beast from DX

mini/micro portable power pack
check this out
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=320572770657&ssPageName=STRK:MEWAX:IT
I have one, it has to be charge via usb, but I do that while I am on my laptop, and the bonus is that it will charge anything that connects via a mini/micro connection,

Applecrusher said:
But what about physically attaching a panel to the back so I don't have to carry extra stuff? Is it possible? How would I wire it up?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
And leave the phone under the sun ?? A very bad idea, the heat will surely damage your phone.

PhoenixFx said:
And leave the phone under the sun ?? A very bad idea, the heat will surely damage your phone.
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Agreed
I don't think a little solar panel on the back of the phone will be capable of putting out that much power
I don't know about you but my phone spends most of its time inside my pocket so it is rarely out in the sun for the solar panel to work
Just carry a spare battery or get yourself the Samsung extended battery
mobilefun
.co.uk/genuine-samsung-galaxy-s-extended-battery-case-p25834.htm
It will extend your battery life without having to leave the phone lying in the sun

Solar charger for SGS and other mobiles.
Few days ago I was searching for the Solar charger for my SGS in India.In local stores I brought 2 solar chargers but these are the china made chargers with very low quality internal battery.
Then one of my friend suggest me the Amzer 3500 mAh Battery Backup Solar Charger and Solio Emergency Mono Solar Hybrid Charger.
I ordered the Amzer 3500 mAh Battery Backup Solar Charger and believe me, the charger is one of the essential accessory for every mobile phone.
Also this Charger is available in India, USA and UK regions.
For India, take a look at this, http://www.fommy.co.in/Amzer-3500-mAh-Battery-Backup-Solar-Charger-P83981.htm
For USA and UK, visit http://www.fommy.com/

the one i mentioned back in post #8 is way better and cheaper
and free shipping with tracking number
trusted site

actually i hv read all the backup power all u guys suggest but i found that these all are just rebranding some chinese low quality products and it cant survive for long and there r some potential hazard that may end up damaging our sgs...i hv tried solar charger and some portable backup power before, the solar charger dun hv a high efficiency to exchange solar energy to electrical energy...it takes me too long time to charge it and it can only recharge the battery once. for the backup power, the mAh thing is not accurate, u need to try it yourself n c how many cycles u can charge the stock battery in order to estimate the true backup power battery capacity

I love my PORTAPOW
Received it yesterday.
5000 mAH USB rechargeable battery in a piano black case.
Fantastic.
This means I can go out on an all-day hike with GPS on.(Yep, I'm that sad)
The phone battery would last 2- 2 1/2 hours max with GPS (and MyTracks or similar on) while hiking.
Really good build quality.
Really good price.
(PS I am in no way connected with the company etc...)
HTML:
http://www.portablepowersupplies.co.uk/portapowPremium.htm

Solar Charger

Someone knows any Solar charger that really works with HTC Desire?
I look in www.dealextreme.com but I don't know how many "Amp" need the desire.

all solar chargers i've found so far had an 80mAh ouput.
a usb charger has an 500mAh output and charges slowly around 4-6 hours? (never tried to charge it full via usb).
a wall charger has up to 1000mAh and charges the phone in 1-2 hours.
so i guess it takes the solar charger virtually forever to charge your phone once

Yeah, generally you want a charger with high output (at least 500 mA) and a high capacity (at least the same as the desire battery, which is 1400 mAh). Once you're sure about those two factors, you're safe.
I'm using the powermonkey explorer: Link
Output: 700 mA
Capacity: 2200 mAh
On a sunny day, I'm able to reach the maximum charge in one day (10-12 hours sun). Note that the output from the solar panel to the powermonkey battery is a lot lower, more like 200 mA. And a full charge should, in theory, give your phone 1 and a half charge. In reality it's more like 1 charge, which is still fine.
It might be a bit more expensive, but it actually works.

veitograf said:
all solar chargers i've found so far had an 80mAh ouput.
a usb charger has an 500mAh output and charges slowly around 4-6 hours? (never tried to charge it full via usb).
a wall charger has up to 1000mAh and charges the phone in 1-2 hours.
so i guess it takes the solar charger virtually forever to charge your phone once
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Click to collapse
heh good point !

if you ever find a solar charger post it in this post where you've got it from would love to try this lol

http://uk.gizmodo.com/5584810/joos-...viewed-solar+powered-gadget-charging-for-real
Gizmodo reviewed this charger a while back. Quite tempted to buy it myself
http://www.solarjoos.com/

http://www.dealextreme.com/p/solar-...ncy-power-with-phone-adapters-led-light-42139
http://www.dealextreme.com/p/1000mah-solar-powered-battery-pack-with-cell-phone-adapters-42871
These two work with desire?
Which would you choose

To use it effectively you need to use a solar charger with built-in battery.
E.g. I got an Energy Trends ET-3000:
http://www.energy-trends.eu/et-3000-solarladegeraet-iphone-handy.htm (maybe use google translate) 330mA solar power, 3000 mA battery, 1000 mAh can be loaded within 3 hours in direct sunlight
Can also be combined with this:
http://www.energy-trends.eu/et-2-solarladegeraet-rucksack.htm for hard survival tours ^^

Arctic C1 mobile
I found this charger: arctic.ac/en/p/power/batteries/44/arctic-c1-mobile.html?c=2224 which I quite like, but
the question is: would the 5.5v output "fry" my HTC?
I tried a 3rd party usb power adaptor, which outputs 5.3v as opposed to the genuine HTC adaptor (5.1v) and the phone can't be used while it's charging.
Literally the phone becomes so unresponsive, that it's impossible even just to slide the keylock! The minute I put the phone back onto the genuine HTC usb adaptor, everything works fine and I can use the phone while it's charging.
So here is the second question: has anyone experienced this?

bliblablub said:
To use it effectively you need to use a solar charger with built-in battery.
E.g. I got an Energy Trends ET-3000:
http://www.energy-trends.eu/et-3000-solarladegeraet-iphone-handy.htm (maybe use google translate) 330mA solar power, 3000 mA battery, 1000 mAh can be loaded within 3 hours in direct sunlight
Can also be combined with this:
http://www.energy-trends.eu/et-2-solarladegeraet-rucksack.htm for hard survival tours ^^
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Click to collapse
this one looks excelente,like germany tanke.

i dont think thats a good gadget. the usb charger does not load the desire complete full and the accu is really fast empty.... so i dont wanna buy such a gadget.

Could be so interesting for long travels

Looks interesting, if someone could share his experiences about it!
I would be gratefull

nava88 said:
http://www.dealextreme.com/p/solar-...ncy-power-with-phone-adapters-led-light-42139
http://www.dealextreme.com/p/1000mah-solar-powered-battery-pack-with-cell-phone-adapters-42871
These two work with desire?
Which would you choose
Click to expand...
Click to collapse
works?? Have you bought anything? Thanks

Portable usb chargers

Has anyone got any experience with such devices?
I'm planning to order one of the following devices, possibly the second due to it's larger capacity:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130456061354
http://cgi.ebay.com/6600mAh-Portable-Back-Up-Charger-HTC-Desire-HD-/130530070954
Any suggestions? Anything I must know before getting one?
Thank you in advance!

I dont have either of those but I do have a TeckNet charger that is very similar to the second one, but mine is 5000mah
It works well and charges quickly however the Mah rating seems a bit optimistic. I only get two full charges from the 5000mah battery.
Its a handy things to have in your bag if you are going to be away from power for a few days, or you want to use your phone heavily on a journey (like a long flight)
I would go with the higher capacity model as the 2200 probably wont hold enough power for more than one charge, unless weight/size is your main priority.

I have a Primo PowerSuit (http://www.phonesuit.com/primo-power-core-battery-pack-for-tablets-phones/) and it's great. It's a bit expensive at $100, but it has a capacity of 8200 mAh, is slightly bigger than the DHD itself.

I have a 2000 mah, it manages a little over one full charge, the mah rating is a little too optimistic. And it charges slowly, cause it's usb, and the stock htc usb cable can only charge in 500 mah max via usb.
Sent from my Desire HD

Check this thread out, and look at what Amazon has.
I've been using the New Trent 5000mah regularly for the last couple of months, and it's doing well.
http://forum.xda-developers.com/showthread.php?t=991562&highlight=new+trent

I can recommend the advenced edition of the Choiix Power Fort 10Wh
http://www.choiix.com/Product.aspx?pid=16
The package comes with everything you need for traveling and i get 1,5 to 2 charges out of it with stock battery.

I ordered this a while ago, its pretty good for giving 3-4 charges before running out. perfect for just traveling within the city.
http://www.amazon.com/New-Trent-IMP...8PTS/ref=sr_1_1?ie=UTF8&qid=1310215749&sr=8-1

I use the Proporta Turbo Charger 5000 and you can charge anything with it - HTC device or other, iPad, Tablet, ipod the lot.
Sent from my Desire HD using XDA App

I've had my eye on the Duracell Instant Charger
http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=168656SD3ZNBM9V25FXN
and the Duracell Powerhouse
http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=168656SD3ZNBM9V25FXN
for some time now... Anyone used one?

Wow! For some reason I didn't have this post on my subscriptions and totally forgot about it :/
Thank you all for your answers! I have decided to go for the Primo PowerCore

i orderd http://www.tecknetonline.co.uk/prod...00mAh-Universal-USB-Battery-Pack-(Black).html the last week and here r my notes about it :
Pros:
-huge capacity , 7000mha
-4 LED indicators for remaining power (more accurate)
-dual usb charging outputs
-micro usb charging input (no messy adapters)
Cons:
-very slow charging output (cannot pass 300 ma shown in batterymonitor widget) , and it doesnt provide the 1000 ma indicated.
-cannot be used while its plugged in charging it self.
-mine stopped working the next day !!!!!
unfortunately i am not satisfied at all about this product even though when u read abot it u get excited, i even payed 90% of its price shipping !! and it doesnt even work.
i contacted them on their website but still no response.
hope this helps everyone in need of this accessory.
i would really appreciate it if someone knows a fast charging pack and a decent one to link to us
cheers