GTMax 5000 mah Battery - Epic 4G Accessories

GTMax White 2 USB Port External Rechargeable Emergency Backup Battery Charger for Sprint Samsung Epic 4G CDMA
http://www.amazon.com/External-Rech...e=UTF8&s=wireless&qid=1288569342&sr=8-3-spell
I thought this might help some one awesome 5000mah battery just use some velcro and have extra power without an outlet possibly for 4 days.
Update:
a better solution might be more http://tinyurl.com/23q6k6m
Used the phone for 10 hours running GPS and taking some photos and the battery died. Not the 4 days of power that I hoped for. Unless you use it conservatively. After the battery died I still had fully charged cell battery which lasted me a little over 3 hours running gps.

damn!
nice find

Related

Battery settings,

Can someone help me out here this is for an Orbit 2 less than 1 week old. I charged the device this morning so by 09:00 it was on full power. By 14:00 its down to 75%. Usage below:
10 minutes phone calls
I have my email set to retrieve from Yahoo every 15 minutes
On battery the screen is set to 50% - 75% brightness
Co-pilot has live function and traffic updates, but I presume that is only when its actually turned on and running Co-Pilot
What is going wrong?
Firstly, did you give it 3 charges of 16 hours plus? I didn't, and don't have as good a battery life of some others that did.
Also, have you got Windows Live connected and checking your hotmail constantly? That killed my battery.
Finally, I leave HSDPA switched off, as I find it chews juice without being THAT much faster; 3G is fast enough browsing and downloading for me.
Good luck, keep us posted.
I've got a HTC TyTN (hermes) and i get the same problem: my battery wears off in maximum 3 hours after i fully charge it. all the connections are turned off,except for the phone function. also, while it's charging, no matter if it's charging through the usb or the AC charger, the battery gets very hot. PLEASE can anyone help
(i have the black satin normal rom, with the 1.43.00.00 radio version installed)
I all so have battery questions. This devise was advertised as an 7 hour talk time on GSM. Compare to my T-Mobile wing witch was only 5 hour talk time.
I don't use phone a lot during day only 5-10 min phone calls and every 60 min e-mail check. And T-mobile Wing (p4350) was going for 3 days no charge no problem. And This I have to charge every day. At the end of the day i have only 60% And T-Mobile USA don't have 3G eat.
I don't get it this phone supposed have one of the best battery life out of HTC phones. And I did charge it wan i first got it for long time before i tern it on.
About chargin and discharge our phones, whe have to remember that we do not use NiCd/NiMh batteries any more.
I have some facts about Li-ion batteries!!!
Guidelines for prolonging Li-ion battery life!
Unlike Ni-Cd batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a long time, they should be brought to a charge level of around 40% - 60%.
Lithium-ion batteries should not be frequently fully discharged and recharged ("deep-cycled") like Ni-Cd batteries, but this is necessary after about every 30th recharge to recalibrate any external electronic "fuel gauge" (e.g. State Of Charge meter). This prevents the fuel gauge from showing an incorrect battery charge.
Lithium-ion batteries should never be depleted to below their minimum voltage, 2.4v to 3.0v per cell.
Li-ion batteries should be kept cool. Ideally they are stored in a refrigerator. Aging will take its toll much faster at high temperatures. The high temperatures found in cars cause lithium-ion batteries to degrade rapidly.
According to one book,[35] lithium-ion batteries should not be frozen (most lithium-ion battery electrolytes freeze at approximately −40 °C; however, this is much colder than the lowest temperature reached by household freezers).
Li-ion batteries should be bought only when needed, because the aging process begins as soon as the battery is manufactured.[13]
When using a notebook computer running from fixed line power over extended periods, the battery should be removed, and stored in a cool place so that it is not affected by the heat produced by the computer.
/Krypto
BadTasteUK said:
Firstly, did you give it 3 charges of 16 hours plus? I didn't, and don't have as good a battery life of some others that did.
Also, have you got Windows Live connected and checking your hotmail constantly? That killed my battery.
Finally, I leave HSDPA switched off, as I find it chews juice without being THAT much faster; 3G is fast enough browsing and downloading for me.
Good luck, keep us posted.
Click to expand...
Click to collapse
16 hours?!?!?!!?
It's a highly debated point, but it seems some who have done the old "3 charges of 16 hours" have a longer lasting battery than certainly I do.
In fact the O2 shop I bought the phone from advised the same, although I didn't actually do it!
Who knows the real best thing to do, all I know is I only get a day out of it, with light to medium use and HSDPA turned off.
Personally, I'm a little speculative of the 16 hour charge times.
I'm not gonna try to be an expert here, but aren't Li-Ion charge circuits designed such that when the battery reaches capacity, the charge cycle is complete? Ie. There is no further trickle charge to the battery? In that case, the 16 hour charge is not doing any good.
But in any case, I myself get 2 days fairly easily with about 1.5-2 hours of phone calls in an Edge area.
I am a firm believer a big difference comes from using of Standby and your signal strength. I've noticed where I go ski'in there is a very weak signal and my battery life drops to 40% or less in one day. So I think this is one major characteristic that will vary between all of us and will dramatically affect the battery life test results.
DaRacerz, you are absolutly right!
No trickle charge is applied because the Li-ion is unable to absorb overcharge. Trickle charge could cause plating of metallic lithium, a condition that renders the cell unstable.
So charging for 16 hours won't do anything.

Galili 1570mAh Battery for Nexus One Review

I got this Galili 1570mAh battery for my Nexus One and I have run several tests to see how it compares to my stock battery. I could not find any reviews on this battery so I figured $15 is cheap enough to give it a shot and see.
Test setup:
N1 OEM battery used for 5 months or so.
Galili 1570mAh battery used for 2 full charge and discharge cycles (according to my research it is a myth that you have to do discharge/recharge cycle few times to get full capacity in lithium ion batteries)
I tested using following steps:
1. Fully charge the battery, give it an extra 30 minutes or so at 100% charged.
2. Hold the power and trackball button to go into Bootloader mode. This is great for battery testing as the power drain over time is identical each time, as only screen is using power and there are no power saving feature kicking in like screen timeout etc.
3. Unplug the power supply and start timer.
I used video camera to keep track of time as I didn’t feel like staring at my phone for over 3 HR’s.
The original battery tested out to around 3 Hrs 15 minutes before the screen went dark. The Galili time fluctuated around 2 Hrs 52 to 2 Hrs 54 minutes. I run the tests 3 times or so over span of 2 weeks with almost identical results.
Conclusion: Yet another battery that lies about its capacity. It seems to be the norm that all the aftermarket battery manufacturers are inflating the capacity information. I found this cool web site where there are bunch of them tested.
batteryboss.org
This is OK battery for a backup but I was counting on getting higher capacity in the same footprint. It looks like none of the batteries out there can beat the original N1 battery.
thanks for the review!! Shame its crap!
So the lesson here is to fork over a little more for a genuine Nexus One battery and don't go cheap with the generic batteries.
That's my recommendation after buying batteries from eBay that wouldn't power up my phones.
I have only ever bought batteries for all my phones off ebay and never had an issue with any of them. They have all performed about the same as the official OEM counterparts. Now SD cards is an story... lol
Lithium Polymer
Why aren't lithium polymer batteries used more? I remember my ooooollllddd sony ericson phone had one....I think it was model t-something...LoL! Isn't it supposed to be better than lithium ion?
SiNJiN76 said:
Why aren't lithium polymer batteries used more? I remember my ooooollllddd sony ericson phone had one....I think it was model t-something...LoL! Isn't it supposed to be better than lithium ion?
Click to expand...
Click to collapse
Uh, the Nexus One does have a Lithium Ion Polymer battery..

Making extended (double) battery from two batteries

I am curious about how the signal lead on batteries works. I have an HTC Sensation. Rather than spend $100 for the Mugen extended battery housing and battery, I got just the housing through ebay for around $20. I removed some of the plastic around the terminals and soldered the + and - ones together. Only one of the battery's signal and temperature leads are connected to the phone.
I seem to be getting decent battery life; however, the battery calibration is completely off. It wouldn't be so bad, but it's affecting how the battery is charged (maybe it isn't, and it's simply just a reflection based on the bad calibration). It seems to switch between faster charging and 100ma at random charge percentages. Reported battery temperatures shouldn't be tripping any sort of safety feature.
As far as "drain" goes, it tends to drop to around 50% within an hour off the charger. Afterwards, it tends to stay there for hours and hours before slowly dropping again. Towards the end, it stays at 1% for a couple of hours before dying.
I assumed it wouldn't be a good idea to short the signal terminals together. Am I wrong?
I'm tempted to pick up the el cheapo laza extended battery (<$20 for one with an evo 3d housing) and restore the Ankers to individual batteries.
Ain't gunna work cap. Assume the batteries are 1.5 volts. (They aren't nut for demo) get two and connect them in series and you get 3 volts
Connect them in parrelel and you get 1.5 volts but twice the amperage. Google it.
It might work but will probly burn up your phone.
Sent from my Droid using xda premium
whodisname said:
Ain't gunna work cap. Assume the batteries are 1.5 volts. (They aren't nut for demo) get two and connect them in series and you get 3 volts
Connect them in parrelel and you get 1.5 volts but twice the amperage. Google it.
It might work but will probly burn up your phone.
Sent from my Droid using xda premium
Click to expand...
Click to collapse
lmao

[Q] Does hot swapping batteries kill their life over time?

When I first got my Galaxy S3 (Verizon) the OEM battery lasted at least a good 9 or 10 hours, usually plenty to last the day. But I wanted more than that so I got a pack of 2x QCell 2300mAh batteries for cheap on amazon, with one of the wall chargers that you pop the battery into. That was July of last year and I promptly lost one of the batts at school, so in May of this year I got another pack of 2 batts, this time EZOPower, 2100mAh.
Both brands worked pretty well while I had them and I would generally just start the day taking my GS3 off the charger and putting the extra battery in my pocket, and at ~8pm or so I'd switch them out and have more than enough for the rest of the day, and some for the next day if I didn't make it home for some reason that night.
But recently that time to switch has been creeping down earlier and earlier, and lately I've noticed I wake up to the battery icon showing the circle but no percentage (just switched from AOSP to Pacrom, dunno if that makes a difference) and when I take it off it's about 95%. When I switch batts, which is now at about 2 or 3pm if I wake up at 10, the second one (coming off the cheap battery-only wall charger) is at 75% or thereabouts and each lasts less than 5 hours.
Attached are my stats from the other day. I keep all my radios on all day usually but lately I've been having to selectively put it on airplane mode whenever I can afford to, if I want to have enough juice to last through the evening. This sucks. I know batteries die over time but I've literally had these ones for a few months and they're terrible already. Is it because of my hot swapping habits? Does that drive down the battery life over time, or is it something to do with how android pegs the amount of juice left on each battery? Is there a way to wipe the battery stats, or would that even help? There used to be an option for it in CWM but I looked today and I suppose it's gone. I'm not sure what I'm doing wrong but I've never had battery life this bad on any phone.
tl;dr bought a pair of non-OEM batteries with a wall charger, been hot-swapping them for more power throughout the day, but in just a few months their life is approaching nil. What am I doing wrong?
Bump. Anyone knowledgeable on this? I'm pretty sure it could apply to just about any phone and I know plenty of other people do the same thing I do with these battery pairs on Amazon so this would be useful for progeny.
Do you leave them in the charger until you need them? Usually, the longer a battery charges while it's fully charged, the more the total charge will diminish. So, the longer you keep it charging more than it needs to, the faster the battery dies out. Also, when you get a new rechargeable battery, or even a new phone or tablet with a rechargeable battery in it, the first thing you should do is use it till it's drained. Don't immediately plug it in to the charger. Keep in mind, though, that no matter what you do your batteries will diminish. Cheaply made batteries will diminish faster than higher quality ones, so that may attribute to how fast your batteries are dieing.
I could be wrong, though.
I actually do keep it on the charger long after it's charged. And I have heard that before - but don't most chargers have a built in feature that cuts off the current once the battery is fully charged?
Anyway I'm not sure that's the sole reason for the batteries being so ****ty. Although idk, I also could be wrong, lol.

Do the OEM batteries keep their charge? Debating portable charger or extra batteries

About to be taking the bus to my university and I was just wondering if the stock Samsung 2600mah batteries hold their charges for a while...like weeks or even months without significant loss..
I'm debating either getting a portable power bank so I can charge on the go while I am on the bus or roaming around campus or just getting a couple extra Samsung OEM batteries and calling it a day..
EpicMango said:
About to be taking the bus to my university and I was just wondering if the stock Samsung 2600mah batteries hold their charges for a while...like weeks or even months without significant loss..
I'm debating either getting a portable power bank so I can charge on the go while I am on the bus or roaming around campus or just getting a couple extra Samsung OEM batteries and calling it a day..
Click to expand...
Click to collapse
I have an extra OEM 2600mah battery that was fully charged a couple of weeks ago. I just swapped it and my phone is showing 90%.
ryant35 said:
I have an extra OEM 2600mah battery that was fully charged a couple of weeks ago. I just swapped it and my phone is showing 90%.
Click to expand...
Click to collapse
Very nice to know...thanks very much :good::good::good::good::highfive::highfive::highfive::highfive::highfive:
Just get any 3rd party battery that has a good rep. I used the zerolemon ones that fit the stock battery door, and they lasted me about 8 mths before starting to discharge more quickly and shutting off my phone randomly. It got slightly bloated too so i threw it away and got a pair of new ones.
I'm not into powerbanks, but if u are u can get one.
I am using spare battery (not original) and Philips power bank.
If you are using your phone very much you cannot survive all day with one stock battery charge.
I have an OEM battery i got from Amazon for $5. It holds charge pretty well. Typically i only have to swap to my spare once a month or so. After a month to six weeks my battery is about 89%.
EpicMango said:
About to be taking the bus to my university and I was just wondering if the stock Samsung 2600mah batteries hold their charges for a while...like weeks or even months without significant loss..
I'm debating either getting a portable power bank so I can charge on the go while I am on the bus or roaming around campus or just getting a couple extra Samsung OEM batteries and calling it a day..
Click to expand...
Click to collapse
I have two Onite 2600mah battery with charger.After charge and dully drain the battery for the first 3 cycles as the service team told me,the battery can last a long time.Even when heavy used,I have an extral battery to replace.In this case,I think a powerbank is no need.
But if you don't want to bring an extral battery in your bag or you have many devices need to charge,a powerbank is more useful.
"Oem battery" + eBay= fake

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