Battery charging slow?
 

Even when all the programs are off, my battery went up by 10% in 1 hour with blue tooth off with wifi off...

anyone experiencing the same issue?

Re: Battery charging slow?
 

Try using the charger transformer from the TP2...the one one the epic is rated 5v @ 700mA the one on the TP2 5v @ 1A

Re: Battery charging slow?
 

Hmm is it safe to do that? won't damage the battery or the phone? just scared messing with electronics lol.

Re: Battery charging slow?
 

Well its USB..you can plug your phone to a PC it won't be same Amp as your transformer anyways...I don't see any reason it will damage the device mostly since both comply to USB specs.

Re: Battery charging slow?
 

Here is what I know about Lithium-Ion batteries. The faster you charge them the shorter that charge will last. Additionally, constantly fast-charging Li-ion batteries will reduce the life of the battery. Therefore slow low-amperage charging is better not only for how long each charge will last, but also for the overall life of the battery. Perhaps Samsung looked at the battery life issues the EVO is having and decided to go with a lower amperage charger on purpose in improve overall battery performance.

So no, I would not use a 1000mA charger. Stick with the 700mA charger and plan ahead to make sure you have enough time to get a full charge.

Re: Battery charging slow?
 

Well the TP2 has a 1000mA charger and battery life for me is pretty good :/

Re: Battery charging slow?
 

Yes, but the TP2 doesn't have the battery life issues that these 4G phones have. The EVO and the Galaxy S line are practically laptop computers that you can make phone calls on. Battery life is going to be an issue for all the new phones coming out until some new battery technology is developed.

Re: Battery charging slow?
 

hmm interesting read, I learned something new today.
Thanks guys.

Re: Battery charging slow?
 

ya this battery does seem to charge for VERY long time.... i almost thought it was only my phone at first.... i could leave it there easily over 2-3 hrs and its not close to being done??

Re: Battery charging slow?
 

Long, long ago we were always told that charging a battery slowly was always the better way of bringing a battery up to full charge. Fast charging seems to stress out the cells and shorten their life span.

I'm using the stock home charger (700ma) but my car charger is a full amp but that just gets used for short periods of time. I am adjusting my charging habits to this phone.

YMMV,
tsp
Sprint Epic

Re: Battery charging slow?
 

First, I'd like to start by saying that a chargers amperage rating is similar to the size of the pipes in your house. That is, when you turn on the faucet (plug into the charger) it will only provide what is necessary (a trickle to a spray) no more. Its the same reason your batteries last longer in a remote than in a vibrator. You are VERY correct in stating that Lithium batteries can be damaged by charging too quickly (as can ALL batteries). In fact, as a previous owner of a touch pro (original) I know this all too well. A "Feature" of the TP was that if you began drawing sooo much power (tethering) that the charger was just barely able to break even, once it heated up to a certain temperature it would STOP charging and only discharge.

This brings me to my main point. Any semi-intelligent phone (and probably ALL phones) have some sort of charging monitoring/control system. Usually it involves a combination of temperature sensing, draw sensing and charging sensing but in the end they all provide a correct voltage and correct AMPERAGE for the situation. Also worth noting is that our 3.7v batteries can't be charged directly from 5v from USB, it must be adjusted by the charging circuit down to 4.1-ish, MAYBE as high as 4.3 (I forget the exact figures, its late). It is both transformed and regulated before it EVER hits the battery.

Long story short, I've been mixing and matching usb chargers for years now and will continue to do so. Although I also bought a pair of nice cheap ebay batteries (desktop batt charger, 2 batteries, car charger + usb $30) so this is kind of a non-issue for me...

Re: Battery charging slow?
 

I hadn't thought about the phone having an internal regulator...that's an excellent point. Years ago I hooked up a laptop to an external battery by cutting the end off of the charging cable and plugging the bare wires directly into the battery. The external battery was much larger and stronger than the laptop's internal battery and the end result was that it fried the internal circuit so that the laptop would now only run while plugged in to the external battery. What was needed was a resistor / capacitor to downgrade the output to the correct levels (which we now have). I imagine this is what these new phones have. I am going to do a little research and see what I can find out.

Re: Battery charging slow?
 

A laptop and and a phone are 2 different beasts..a laptop receives a lot more charge then a phone..The power connector is there for mostly transforming AC to DC and regulates voltage...inside both laptops and phones as long as the voltage is same are a set of resistors to regulate it, but these have an allowed range..if you go over the allowed range it can fry. USB has a standard for up to 1A so there shouldn't be any issue as 1A charging is considered.

oh compuw22c, the TP overheating thing has to do when a li-on battery starts draining and charging a lot at the same time...thus causing over heating..then once TP reached a certain heat level it deactivates the charging to prevent damage...there was a mod to increase the allowed overheating limit. In the TP2, HTC was smarter and added a thing that once it reaches a certain heat level it stops charging, waits for it to cool down and begin again to charge to full in cycles. Aka this is a flaw in li-on batteries when they charge and discharge a lot at the same time... not really the rate at which it charges, at least in this specific instance.

Re: Battery charging slow?
 

I have to agree with gTen on this issue. 1Amp charger will do no more harm to your battery than it did with your TP2 battery. Yesterday I did full discharge of the battery from 85% to the point of having phone shutdown. It took 6.5 hrs to charge the battery to full. My TP2 would charge from my PC in 2 hrs since I had a tweak in the rom for a quick charge. I was going on 8 months with the TP2 battery and never had any issues with shorter battery life. So use common sense, if charging overnight then use the lower rated charger. If you need a fast pick me up, as we all do at times, then use the 1Amp charger.

Re: Battery charging slow?
 

I believe what we're talking about is essentially the same thing. The battery will heat itself up approaching that thermal cut-off point anytime the total power (in AND out) reaches a certain point for long enough to heat it up. The way I see it you can achieve it EITHER by USING tons of battery power while trying to charge it at (lets say "normal" speed with .7 amps) or by using a MODERATE (and/or overclocking) amount of power but charging it faster (1-2 amp charger).

If I were to tether my phone for 30 minutes and then plug it in, it will already be pretty hot. It won't take long after I plug it in for it to reach that temperature of diminished/deactivated charging. And it wouldn't have anything to do with the charger, just the total amperage both in AND out that the battery has flowing through it generating heat.

Re: Battery charging slow?
 

I noticed turning the phone off completely and wall charge it, it charges the fastest. From 0 to 100%in about 1hour 30 minutes. Just like prior tp,tp2 mogul devices.

Re: Battery charging slow?
 

Yes..thats because the device isn't using up any energy while off..hence it charges faster...

Sometimes at full constant usage like mp3 player and youtube viewing and taking phone calls while charging it, takes me 7 hour to fully charge. Ridiculous! But I'll take it over any htc junk out there right now. :)

Sent from some where on Earth, sorrounded by llamas.

Dear god! What a pos! Lol. Love the hardware gpu power. But charging is non existance. Best advice is to keep it plugged it any chance you get. Took me 12 hour to charge on heavy constant usage.lol. Using supafast 4g.

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Re: Battery charging slow?
 

wrong, this was for ni-cd and ni-mh. the only thing that adversely affects charging lithium (granted voltage is correct) is heat. lithium actually likes being charged even when not empty.

Re: Battery charging slow?
 

From what I heard there are actually 2 kinds of batteries used on the Galaxy S, Li-Ion and Li-Poly...I'm not sure if Epic got it the same way but I read back when i9000 came out people got both types...

This is biggest flaw this phone has. Im a super heavy user. My mastery puts dead everyday at around 10am. I start using it at around a little over 6am. Trolling serious business. But I tried different roms of eclair and froyo, both with battery utilities like juice defender. And no matter what, mines does at 10am. My trick is to have it plugged every opportunity I get. Makes me kneel down and bow down to my old htc devices. Those charged fully in 1h 30minutes. But them again, htc had inferior hardware, so I see how it can charge faster. Look at the Evo, that thing is like a pinto and epic is like a ferrari. Pinto take u far but sloooooowwww. Epic take u 0 to 60 in 3seconds but sucks power.

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Re: Battery charging slow?
 

What I did is buy for 7$, 2 extra batteries and an external battery charger on ebay...now I dont charge anymore (cause I'm lazy), just swap batteries and leave the old battery to charge...

as for power saving, have you tried SuperPower?

If you want some tips to saving battery in terms of themes and etc..let me give ya some formulas...

obviously black is your best friend and dark colors...

red = 1x
green = 2x
blue = 3x
white = 6x

where x is the battery usage...(lower is better)

Though what we really need is a UV kernel for less battery usage..did you look at your breakdown to see whats draining your battery in particular?

No time. I boot fresh and use! Forget digging! I use! Ive done stock flash witj no extra add ons.and I can kill it in 3 hours. Hehe. But I love this phone. I have been using it for 2 months now and I still get excited when I take it out my pocket to use it. Lol. When I had the Evo, I was sooo angry in the benchmarks. nova ran awful and would slow down at every corner. Video recording at highest settings made tbe phone hiccup. And the front face bottons were awful! That thing felt like I was talking to a ipad. Soooo big! Too big. But what killed the Evo for me was the overhyped snapdragon. Junk!

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