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Hi,
I am having problem in charging, when I plugged the charger in the light come on and the screen shows the battery charging, after charging hours and hours the battery shows only 2 bars like 50 %. I also tried by changing the battery and charger as well and also I flash the device but still the result is same.
Any suggestions
Thanks
Hi,
Consider trying to leave it charging for at least an entire night. I've had some experience in e.g. my Artemis thinking the battery was fully charged while it wasn't. Especially with non-official batteries with more mAh the device has to learn when a battery if fully or partially charge. One or two full charge/discharge cycles do wonders here as long as you don't do a hardreset.
Grtzzz Roel..
Hi,
After feeling that something wasn't right with my HP Ipaq HX4700 running time I have decided to look into whether there is a problem.
I have now tested 2 batteries in my HX4700 and just need someone with some *knowledge* to give me some advice on my findings.
1st battery tested is an aftermarket Panasonic extended 3900mAh (assembled in China with Japan cells) with battery cover.
2nd battery tested is the original HP standard 1800mAh battery.
I set the HX4700 W2003CE (sp29841 with sp30939 update) with backlight approx 70% (my usual setting), all auto-off features disabled (backlight/standby), wifi / bluetooth / irda off, TCPMP player playing mp3 continuously from 100% charge until battery reached 10% left.
For measuring battery drain I used acbPowerMeter.
After completely tests of both batteries here are my findings;
Estimated length of test to reach 0% power remaining equaled 5 hours, mAh total drain 1800mAh;
Average drain was 355mA to 360mA
after 3/4 hours 250mAh used 85% power remaining
after 1 hours 350mAh used 80% power remaining
after 1 1/2 hours 500mAh used 70% power remaining
after 2 hours 700mAh used 60% power remaining
after 2 1/2 hours 900mAh used 50% power remaining
after 3 hours 1100mAh used 40% power remaining
after 3 1/2 hours 1250mAh used 30% power remaining
after 4 hours 1450mAh used 20% power remaining
after 4.5 hours 1600mAh used 10% power remaining
after 5 hours 1800mAh used 0% power remaining (This one is the estimate)
Getting the above test results from both batteries shows something is definately wrong!
I am happy that the HP standard battery is working correctly reaching it's 1800mAh potential.
I am shocked and upset that the Panasonic extended battery is only working like a standard battery.
1800mAh is lower than 50% of the Panasonic's 3900mAh batteries potential capacity.
Based on 355mA to 360mA average drain the 3900mAh battery should last around 10 3/4 hours!!!
Any ideas what I can do with the Panasonic extended battery now, or can only the batteries manufacturer fix it?
I have checked and the battery is still under warranty for another 5 months.
Thankyou,
Dan
Battery has been replaced under warranty.
Battery has been replaced under warranty.
Was quite a process but after two weeks of being stuffed around I got angry with the supplier and I was sent a replacement.
I have not used or tested the replacement battery as I have decided to sell the battery 'as new' condition.
I have also sold my HX4700 now. It was a great device and I may regret selling it in the future.
Fingers crossed I will find another device that is a worthy successor.
In conclusion; Li-Ion batteries 'life span' is measured from the date they are manufactured not the date you purchase them. This means that a supplier with old stock may sell you a battery that is half dead. So take this as a warning of what can happen. I recommend checking a 'manufactured date' if possible to save from disappointment before purchasing. If you do get a battery that is half dead then under the consumer guarantees act you should be able to return the battery within the warranty period. Some suppliers are now stating that if a battery looses 20% or more 'life' in its first year of use they will replace the battery.
Thanks for looking.
Side note; Charging mAh???
I am currently charging my extended battery again.
Just noticed that with my HP 2A wall charger connected to my HP cradle it is only reading approxiamately 1000mA charging current via acbPowerMeter.
Shouldn't that be 2000mA? Is it because I am going through the HP cradle?
edit #1;
Just disconnected the wall charger from the cradle and plugged it directly into the HX4700. It still is only reading approxiamately 1000mA charge current.
edit #2;
Battery is now at 80% charge and charging current has decreased to 600mA. I guess the charge current decreases as the battery fills up.
Just connected a HP 1A wall charger directly into the HX4700 and is reading 600mA charge current as well.
Makes me wonder if paying extra for the 2A max output charger was worth it???
Any explanations, advice?
I will be quite annoyed if I found that the 1A and 2A chargers both took the same amount of time to charge the batteries. Ofcourse I am suppose to be looking at testing running time of batteries at the moment not charging, maybe that could be after..
Edit;
I will see if I can find out if the HX4700 limits the charge rate to 1000mA. If so, then HP is ripping people of with 2A chargers that will never be utilised beyond what the standard HP 1A charger can do.
Do you think the charge rate may have been programmed into batteries onboard chip by the batteries manufacturer as opposed to the HX4700 being the limiting factor??
Thanks,
Dan.
Hey everyone,where I can buy orriginal battery for my XDA IIs (blue angel),my position in Indonesia (samarinda - east borneo). I need it immidiately.
http://forum.xda-developers.com/showthread.php?t=478519
Sorry orb3000 doesn't help
orb3000 said:
http://forum.xda-developers.com/showthread.php?t=478519
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Click to collapse
No help sorry, the HP HX4700 has no phone functions.
May help others though.
Thread is now concluded
I have now finished updating/monitoring this thread.
Conclusion can now be seen in post#2 above.
If anyone wants to ask me a question or contact me please send me a PM.
I don't have much time to spend in this forum so response to communication will take a long time.
Hi,Everyone,
Unfortunately, quite a few iPAQ hx4700 owners noticed a huge reduction in how long their device's battery would last.
You see, ROM update 1.10 introduced an error where the hand held would think its battery was empty when it wasn't.
Ok i am using the p3300 as a covert tracker and have installed a large external LI-PO battery, not the LI-ION that is normally used in the phone.
Because the li-poly battery can be discharged to a lower voltage before it is considered low battery, than a li-ion battery, id like to be able to set the switch off voltage level to be lower, before the unit switches off. so that a can fully use the power in the battery. As it stands with the large battery (8800 Mah 4 2200 Mah cells in parallel) windows is shutting the unit down before the battery is discharged. I think this is around 3.6 volts , but the LI-Poly battery can be discharge to around 3v under load before its considered flat. and im only using around 60% of the batterys power like this.
Is there any way to change this in the registry, so that i can fully discharge the battery and get a longer life out of it. I'm sure i read something like this on here a year or so ago, but i cant find any info now.
Very interesting post. I'm not sure if you can modify that value in the registry but I'll try to dig on it and let you know if I find something.
I'm using a CECT W800 which is a clone of HTC P3300 and have a problem with the battery when using it as GPS on the car. To be more exact the battery gets depleted even with the charger on in about 2 hours or so. I thought about trying to replace the battery with a more powerful one (even if I would have to put it outside of it) but got stuck when I found out that it needs to be a compatible battery in terms of communication protocol. Do you know more about this? Can you please give me some details or hints?
Thanks.
Hi!
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
Something, that I launch, I put my phone on the desk, have a tea meanwhile, and it's drained! Something, that turns on wifi, do some downloading, browsing, video playing, or whatever, and does it automatically without supervision. Does such app exists?
I'll second this, it'd be nice to have an app do this for me and maybe even give us some interesting stats from it?
Sent from my mind using telepathy
why would you want an application to destroy your battery?
Adevem said:
why would you want an application to destroy your battery?
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Apparently if you do a full discharge the battery life will be longer.
Soniboy84 said:
Apparently if you do a full discharge the battery life will be longer.
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not really, you should avoid deep discharges...
Byr0x said:
not really, you should avoid deep discharges...
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+1 If you had been reading around...you would know Lithium Ion batteries are designed to 'maximize' their efficiency within about two weeks of 'top up' charging. Cycle-charging is generally considered a less efficient method of charging. You will need to 'TopUp charge' this means charging as much and as often as possible. If your battery is at 89% for instance and you find yourself near a socket, plug your adapter in and charge it up to 100%. After a few days of doing this you will notice an improvement in the life of your battery when you are not able to charge.
Actually,,,
It is not matter of running your battery down to 0%.
It is ok to run it down till phone does to power on itself.
As you know battery is a single cell Li-Ion @ 3.7v
when it is fully charged it's peak voltage is 4.2v
By the time battery mah is drained down (galaxy s has 1500mah)
battery voltage should be around 3.2~3.4v range. this will depend on condition of the battery.
Battery should never go below 3.2v personally, 3.4v is my cut off.
If your battery voltage goes below 3.2v... it's time for a new battery as this kind of voltage will damage your battery, either it will leak or puff (battery will actually get bloated.
Phone has a voltage cut off so it will not over charge over 4.2v but if it does, it will likely start to smoke and catch fire.
I am sure anyone who is into electric Radio control knows all about these batteries.
Oh btw,,, long time storage voltage should be 3.8v
You'll be asking how do I know what voltage my battery is... I personallly don't know of any apps but GPS Status actually shows the temperature & voltage of your battery.
Soniboy84 said:
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
Click to expand...
Click to collapse
First, take into consideration the comments above regarding deep discharge of your battery...but, to answer your question, there's an app in the market place called 'Battery Refresh' which attempts to drain your battery quicker.
Well if it's all true above than its a good sign, and thanks for the info! I'm not an expert but in the old times I remember batteries had to discharged completely, maybe even if it's just a few times. Now somebody can also tell me why my battery is discharging when it's plugged in the socket with original charger? All I do is using the internet, and has. nimbuzz and a live wallpaper on. :S
You could probably enable the GPS/BT/WIFI ( connected to a router ) and run the interactive mode on Neocore benchmark.. that should enable most of the hardware components on the phone and stress the GPU/CPU.. probably would see a 25% battery drain for every 35-40mins.
I don't know what has changed with the batteries but as far as I know...
it is good to discharge new batteries 3~4 times down until phone does not power on.
Like I have said... it's about the voltage of the battery, not whether battery has any juice left in it or not.
These batteries have a protective circuitry so that it will not charge over 4.2v,
also as for discharge it is usually down to 3v but usually with a charger/discharger units that can control mah/volts/amps. With typical usage from the phone, it'll likely be discharged down to about 3.2`3.4v. Which is very safe.
You can do whatever you feel but I personally do this to every batteries I have for phone and every batteries I use with my radio controled cars.
For my RC cars, I have about 6 batteries ranging from 1cell to 3cell LiPo packs.
Each cell is 3.7volts.
But you don't have to force discharge and hurry the process.
Just use the phone normally and let it run down to nothing... than recharge to full peak.
Than again, choice is yours.
I'm looking for the same kind of applications. It's very useful for recalibrating your battery. Wipe the battery history then do a full cycle.
Sent from my GT-I9000 using XDA App
The old saying in RC Helicopters was that the difference between discharging 50% and 100% was the difference between getting 500 uses and 5 uses.
You should certainly avoid ever fully dischaging any lithium based battery.
Older nickel batteries (Ni-cd, Ni-MH) required full dischage cycles to get rid of memory the the metals pertained, lithium-ion and lithium-ion-polymer not only do not require this; but doing so will damage them.
And yes, the older ipods came with Nimh cells and they did reccomended full discharge cycles.
Im pretty sure the idea was to try not to let the voltage get below 3.5v/cell and never below 3.3. Dead flat is 3 or 2.85 which is when the battery simply cant produce any real current. The phone should have circuitry though to not let the voltage get above 4.25 or below ~3.5.. If the low battery warning comes on, set the brightness to dim, and stop any activities (unless its a phone call, its not THAT important but if youre playing games or watching a movie...) until yo can get to a charger.
By the way this being my first post (i meant to ages ago) Ill just mention that my galaxy S came with recovery mode and download mode Enabled, i got it just last month, Virgin network, Australia.
draining the battery fully was for the older battery types, new age batteries are not recommended to be drained fully
Thanks!
One more question:
I'm using my phone as a desktop replacement, because I don't have Internet at the moment. I'm using xda, dolphin browser and listening music. It's plugged into the mains and it's not charging. It says 49%, and stuck there. Is it possible I'm using too much battery?
Sent from my GT-I9000 using XDA App
Ok, this will be my last reply.
Fully draining or not is not the issue.
In RC, most modern electronic speed controllers have a built-in battery cut-off which will cut off power once it reaches certain voltage. Because OVER-draining battery without cut off can damage/kill/ or make it unable to hold voltage.
Also, once the battery voltage reach certain point (still within safe range) you will notice the motor being powered slow down. This would also be a recommended time to stop.
Cellular phones have built in safe cut off aswell. As I have said I have measured my battery after being full drained, voltage was around 3.55v or so. Which is very normal considering voltage of the battery is 3.7v only with peak charged voltage of 4.2.
Now, Someone mentioned that fully draining your battery repeatedly will dramatically reduce battery life.
Reducing life of the battery has more to do with the amount of AMP used to charge the battery. Faster charging is usually reduce battery life dramatically.
And without hobby grade chargers, you won't be able to control this charge rate.
Slow charge is better but charging at 1C rating is the normal. But charging at 1C means regardless of batteries mah rating, battery can be charged in about 60 minutes. As we all know, our phone batteries doesn't charge from zero to full in 60minutes, right? just like most of the portable devices it takes nearly 3~4hours to fully recharge. Last 20% usually takes longer because Amp provided to charge slowly lowers. That is why.
For example, if Galaxy S battery is 1500mah, than 1C charge rate is @ 1.5amp.
If battery is 3000Mah, 1C is 3.0Amps and so on.
So like I have said over and over before, drain your battery away if you have to by choice or not. Just use it up, I will bet you your battery will last longer than you keep your phone.
U should avoid draining ur battery to 0% (witch is not possible with ur phone. When it shows 0% the charge of the battery is at 10-15%). Li-ion batteries dont have a memory effect, so it would be usless discharching it completely anyhow. Best for sgs battery is charging it before it goes under 50% that will improve the lifetime of ur battery (not how long it lasts before u have to charge but how long it lasts before u have to go and buy a new one)
How do i know? Simply cause i had to learn that a few weeks ago for the job im learning.
@xxgg: yes ur right, it wont really damage the battery if u runn it till thr phone shows its empty. But using an app to drain battery as quick as possible will, since the app forces the battery to give out more Ampere than its built to give out
Sent from my GT-I9000 using Tapatalk
Under mango or one of the firmware updates which had been updated recently , u will see yr battery saver is fluctuating , at one time saying u have a 1 day, while another time it says u only 2 hours on a reasonably fuller charge.
there is a problem with HTC original batteries, rather i will say a safety regulation after recent incidents with battery safety
yr htc only charges up to 85% level even though the phone indicator shows 100%
when u unplug it from the charger, it immediately drains and stays at 80%.
THis is likely why the HTC phones have a shorter battery life, whether its android or windowsphone 7
this is not a defective battery, its made intentionally by HTC for 2 reasons 1) safety , 2)battery longevity ,the safety mechanism built in stops charging it to 100%, thus overcharging, overcharging means the battery is out thru stress which may pose a hazard. if a battery is fully charged to true 100 % , it poses a hazard if one of the pins in the phone connectors break. apparently this pin tells the charger or the phone not to charge anymore once reaching 100%. there is a possibility that if this pin breaks, the phone will overcharge and pose a safety hazard. So this is why HTC batteries dont charge to true 100% and this particular pin is tweaked to full charge to only 80%
wheareas, mugen batteries ect do not have this safety regulation or charging limit although they are safe to use, so they seem to last 20% more than stock HTC battery because they fully charge to 100%.
Mugen or other reputed aftermarket batteries are more likely to wear out sooner than stock batteries unless depending on the quality of the battery..
in order to get yr HTC battery to full charge it u need to bump charge it.bump charging is a technique to fully charged the battery closer to its real capacity
to bump charge
1) fully charge the battery from 20% to 100% , as indicated by the phone OS
2) turn off the charger, turn on again, u will notice the phone charges again even though its 100% full for 1/2 a minute. wait for it to fully charge
3) repeat the above step 2) for 10 times
4)use a timer plug to simplify the process. Set the timer plug to on/off every minute for 10 times. u need to get a digital timer for this purpose with mutiple timer settings
Magpir said:
yr htc only charges up to 85% level even though the phone indicator shows 100%
when u unplug it from the charger, it immediately drains and stays at 80%.
THis is likely why the HTC phones have a shorter battery life, whether its android or windowsphone 7
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Interesting. I noticed this with my HTC Mozart; battery indiactor drops one bar (to 80-85%) as soon as I take it off charge. Always assumed it was a WP7 thing - like it was drawing a lot of current.
Where did you get this info from? Looks like I'll be ordering a new (non-HTC) battery asap!
If it's true i won't buy a plug timer but a new battery, not from HTC...at least i hope it's true caus my battery capacity sucks and that gives me hopes, enjoying my hd7 more than a half day without plugging it (when it's possible)...so nuff thanks for the tip.
Sent from my HD7 T9292 using XDA Windows Phone 7 App
Funny, I have always done this with every device (maybe not the x 10 repeat!). never knoew that was the reason though thanks!!
not only HTC, there are couple of other devices like samsung galaxy ect
now u know why they claim mugen and other aftermarket batteries last longer...
mugen 1500 mah battery with the same size as the stock 1230 mah batt>
thats bull..because a 1500 mah battery looks much bigger ... the samsung omnia 7 has a 1500 mah battery and its 30% larger than than the HD7 battery....
Aphasaic2002 said:
Interesting. I noticed this with my HTC Mozart; battery indiactor drops one bar (to 80-85%) as soon as I take it off charge. Always assumed it was a WP7 thing - like it was drawing a lot of current.
Where did you get this info from? Looks like I'll be ordering a new (non-HTC) battery asap!
Click to expand...
Click to collapse
thats because the battery stops charging once it reaches 85%
u may have heard of the HTC bump charging technique. thats what this si all about , but u need to do it everyday, so get a timer plug and leave it to do its job overnight everyday
the best is to use a digital programmable timer plug .
Ok, had a google and looks like your post is only partially true:
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Appears it's an issue with all smartphones, not just HTC! Also bump-charging will dramatically reduce battery life.
As someone in the comments says; why can't the phone just stop charging and switch to running wall power once battery gets to 100%, same as laptops? I assume this is what Apple do, as the iPhone doesn't suffer from the same issue.
Interesting because I have no problems with my battery doing that running Mango beta 7712 on my HTC 7 Pro.
The moment I take my battery off once it turns green, it stays at 100% for hours if there's absolutely no activity on it.
I think it's how far you guys are draining your batteries. Ever since I've gotten my phone, only twice did I push the battery lower than 15% charge; once on accident and another to recalibrate it. After that, I never pushed it lower than 15% and made sure to only recharge it after at least a good 20% of usage (days i feared i wouldn't be near a charger and needed full charge).
Granted, I'll add that it maybe be because I swap the battery out every other night with a spare, and if I do so I make sure there's between 50-58% charge left.
No bump charging either.
ScottSUmmers said:
Interesting because I have no problems with my battery doing that running Mango beta 7712 on my HTC 7 Pro.
The moment I take my battery off once it turns green, it stays at 100% for hours if there's absolutely no activity on it.
I think it's how far you guys are draining your batteries. Ever since I've gotten my phone, only twice did I push the battery lower than 15% charge; once on accident and another to recalibrate it. After that, I never pushed it lower than 15% and made sure to only recharge it after at least a good 20% of usage (days i feared i wouldn't be near a charger and needed full charge).
Granted, I'll add that it maybe be because I swap the battery out every other night with a spare, and if I do so I make sure there's between 50-58% charge left.
No bump charging either.
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yes its better to maintain 20% charge .
If u noticed the iPhone batteries wear out faster.
About year or so.
Just to confirm I have used the timer plug technique twice the last 2 days .
This is what I have
30% charge
8 hours since last charge
Moderate usage.
Somehow those who claim to use momax or mugen batteries claim to have the same results above .
the charge-controller is in the phone not the battery.
schranz01 said:
the charge-controller is in the phone not the battery.
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apparently it still the battery...
up for awareness.....
My HD7 doesn't do this. Tried several times even over a 5 minute span keeping the battery indicator in view. It never dropped to 80%.
---------- Post added at 08:57 AM ---------- Previous post was at 08:54 AM ----------
Magpir said:
yes its better to maintain 20% charge .
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You should not let Li-ION batteries fully discharge, ever. It's good to keep it on a charger whenever you can, than keep it off a charger and let it fully discharge. That wears the battery out.
Also, there's no risk in overcharging the battery because almost all decent phones will stop charging when the battery is full. They know when to stop charging, just like they know when to alert you that the battery is fully-charged (via a notification and/or changing the LED Notification light color).
You actually can overcharge it by exposing a fully charged battery to higher temperatures - putting the phone in direct sunlight or setting it in a car holder in the way of hot air from the heater deflector while using Satnav, for example. In order to avoid these conditions, controllers do prevent batteries from 100% charge. That being said, I don't think there's a standard for marking battery capacity, and an honest manufacturer should put real effective battery assembly capacity accounting for those limitations, not the sum of capacities of included cells. Don't think they do it really.
vangrieg said:
You actually can overcharge it by exposing a fully charged battery to higher temperatures - putting the phone in direct sunlight or setting it in a car holder in the way of hot air from the heater deflector while using Satnav, for example. In order to avoid these conditions, controllers do prevent batteries from 100% charge. That being said, I don't think there's a standard for marking battery capacity, and an honest manufacturer should put real effective battery assembly capacity accounting for those limitations, not the sum of capacities of included cells. Don't think they do it really.
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Yea, its like computer hard drives and flash cards....Formated they never will be the size your quoted or paid for.
I wish there was standards for this and it's only sold on the actuall usable space or time.
N8ter said:
Also, there's no risk in overcharging the battery because almost all decent phones will stop charging when the battery is full. They know when to stop charging, just like they know when to alert you that the battery is fully-charged (via a notification and/or changing the LED Notification light color).
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It's actually still not good to leave li-ion batteries plugged in when they are fully charged and stopped charging. They will suffer from capacity loss that way as well. Not to mention any heat coming off the device.
Update: i did not bump charge today..
and the old symptom returned again.. draining fast