I bought a 1900 mAh battery from mobilfun.co.uk, appears as an official O2 battery but have had to send 3 back.
The first did not charge at all, either in the cradle or the phone.
The second charged fully in the craddle and lasted 2 hours before going dead. It would not recharge in the craddle or through the usb cable - battery not seen.
The third again seemed to charge OK in the cradle but when put on the phone it immediately caused a hard reset (internal battery at 100%).
The company has changed the battery each time but I'm at a loss to understand why this is happening. Is it a bad batch of batteries or the phone?
There were no instructions with the battery to indicate the need to charge the battery on the phone first instead of the cradle so I used the craddle.
Any adice gratefully appreciated.
to plane-crazy:
would u mind to send me the link? so that I know which battery u have bought....
This is the link to the extended battery on the mobilefun site:
http://www.mobilefun.co.uk/product/5268.htm
Related
OK, put the BA in the cradle to charge and, I also put the spare in to charge at the same time. So, to my surpise, the main battery discharged to 0% and then warned me to replace the battery. So, I changed it for the spare that was at 100% according to the power setting montior. Anyway, the backup battery was at 36% (not 100%) but started to charge nontheless.
So, whats going on? why did one battery discharge (very rapidly) and the other charge.
By the way, the battery that discharges when in the phone, charges ok when in the aux slot of the cradle.
Can someone help? I am very confused.
Hello people,
I bought a 3600mAh battery from eBay and just received it couple of hours ago.
So I plugged in the charge cable... and its been a few hours but the battery level still shows as 0%.
Have I gotten a defective battery, or is there something I can do?
Look forward any comments...
Jay.
nowadays I have seen many of this questions; cradle and usb cannot charge a battery like that; I'm using a 3400mAh battery on my pda; had the same problem.
but it works great with charger.
no, i think usb crade should still charge the extended battery, that is, if you can actually fit it in it charges a lot longer though, that's why i always use charger.
Is that made in china?
I have even seen this on my 1490mah battery. I couldn't keep the phone on and charge at the same when the battery was depleted to zero. I had to turn the phone off and let it charge for about an hour and then it would charge. Don't know if its the same thing for you but you may want to try.
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
Click to expand...
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.
my captivate is v2.2 froyo rooted w z4 and lagfix, My stock battery barely lasts me through a night at work,
I ordered a 3500mah battery from ebay and when i received it I charged it overnight with my phone off....
The next day was a miracle! Battery stayed at 100% for 2 hours, by the end of the day I still had 60% battery left!
I read that the first couple charges need to be cycled so i tried to drain the battery by playing a movie over and over with screen brightness and volume at max.....
the battery lasted forever, after getting it down to 7% I charged it overnight- sameway with phone off, but now nomater what i do it only lasts the length of a stock battery.
I tried unplugging,plugging back in, phone off , phone on, waiting hours after it says 100%(on charger overnight) and tried ac and usb charging, but it just isnt seeming to charge all the way.
I was going to buy a second extended battery and an external battery charger but all the external chargers i see on ebay say are only good for li-ion batteries up to 2000mah, plus i had to modify my otterbox defender case to support my new battery and it would be a pain to have to take case apart everytime i swap batteries.
Ive been reading for days about what to do to no avail, all the external chargers i see arent rated for 3500mah capacity and I wouldnt mind flashing a custom rom that would support extended battery charging but the more research i do the more confused i get.....
Is there a kernal out there that is stable and supports charging these batteries with no bugs or issues????
What custom rom would be best?
please help......
any info is greatly appreciated
there is no such thing as a rom that supports extended batteries
the phone does
the chargers ALL work for the extended batteries there is no capacity rating limit on them. they do have a charging rate but it is around 350 to 800 mA/H and the batteries are acutally around 2500 mA so devide 2500/500 is 5 hours to charge.
[Review] 3500mah extended battery pictures heres my review - and would have been a better place to post and ask.,...
Cheap Chinese Battery Charger heres my charger. works fine.
[Mod] Battery Charger - USB Upgrade Mod heres my charger mod to charge faster thru USB. 800 ma/h so under 3 hours for extended,
charging on the wall charger or thru the phone takes longer than a regular battery.
charging thru the phone on USB is faster with the official samsung or with a hacked usb charger like above
i get upto 60 hours out of my battery. - under volted properly and custom kernel options..
you may want to wipe your battery stats. but i switch back and fourth no problem.
or your battery has a bad cell. those extendeds are just 2 batteries linked together.
deezdrama said:
my captivate is v2.2 froyo rooted w z4 and lagfix, My stock battery barely lasts me through a night at work,
I ordered a 3500mah battery from ebay and when i received it I charged it overnight with my phone off....
The next day was a miracle! Battery stayed at 100% for 2 hours, by the end of the day I still had 60% battery left!
I read that the first couple charges need to be cycled so i tried to drain the battery by playing a movie over and over with screen brightness and volume at max.....
the battery lasted forever, after getting it down to 7% I charged it overnight- sameway with phone off, but now nomater what i do it only lasts the length of a stock battery.
I tried unplugging,plugging back in, phone off , phone on, waiting hours after it says 100%(on charger overnight) and tried ac and usb charging, but it just isnt seeming to charge all the way.
I was going to buy a second extended battery and an external battery charger but all the external chargers i see on ebay say are only good for li-ion batteries up to 2000mah, plus i had to modify my otterbox defender case to support my new battery and it would be a pain to have to take case apart everytime i swap batteries.
Ive been reading for days about what to do to no avail, all the external chargers i see arent rated for 3500mah capacity and I wouldnt mind flashing a custom rom that would support extended battery charging but the more research i do the more confused i get.....
Is there a kernal out there that is stable and supports charging these batteries with no bugs or issues????
What custom rom would be best?
please help......
any info is greatly appreciated
Click to expand...
Click to collapse
there as an app in the market to wipe battery stats I forgot what its name it might be helpful to you since you're on stock froyo. probably your phone battery stats was in line with your oem battery so to maximized your extended batt you will have to wiped out the current battery stats for your phone to adjust to your new extended battery. I will post the app name later if I could find it. since you are rooted it will be of use to you.
edit: ok I found the app it's called battery calibration by nema download it from the market give it a whirl and observe how it goes..
i remember reading about such an app for rooted phones on a different forum but someone replied saying that it would wipe battery stats but still wouldnt help since the phones stock software is written to only charge a battery to 1500mah then it stops charging.....
Do u think it would work or am i screwed unless i flash a new kernal?
would be worth a shot.......
Is it best to wipe battery stats when extended battery is drained b4 charging.... or when fully charging .... or does it matter?
thanks guys for the fast responses!.....
so any of the chargers that fit my battery should work then.... they have the same specs as yours... so i will go ahead and order one for now,
I guess the surest way to know i am getting full charge would be to use the external charger...
So an extended battery should fully charge in the phone with no issues? Ive read so many forums that say a custom kernal is only way to charge them 100% in the phone???
no.. to charge at 100% speed. and i havent heard of any kernel for that in the captivate forums...
ie using the official samsung charger (usb) will charge at full speed the one that comes with your phone is 750 ma/h. if you plug into a non official charger the phone will only let in about 350ma/hour through the usb. or hack it.
i have the usb that came with the phone.... so i will get 750ma per hour if i connect usb to computer only or it will charge that fast on the samsung wall adapter also?
the wall adapter only!
the phone has to see the official CHARGER to charge full speed. or hack the other CHARGER, other wise it charges at what it calls "usb" so charging using usb would be slower too. if you read the [mod] link above, or all the other times i said CHARGER above, you would understand,
alright....thanks bro
charging via usb from your pc will always be slower than using a wall adapter.
not true.
aftermarket chargers (not samsung) wont charge the phone any faster than the pc
....unless you mod it!
[Mod] Battery Charger - USB Upgrade Mod
unless the middle 2 pins of a USB cable or the charger itself has the 2 pins shorted the phone charges in USB mode 350ish mA/h with the OEM chargers or a modded charger it charges in "AC mode" upto 1100 ish mA/h
the charger that comes with it supports this mode but only 750mA/h max output.
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ya.....
Hi I've just bought one of these and will only charge my s3 to approx 80% . With my s3 battery being 2100mah it should charge it fully and have approx 1300mah left. Or am I missing something?
princepilot said:
Hi I've just bought one of these and will only charge my s3 to approx 80% . With my s3 battery being 2100mah it should charge it fully and have approx 1300mah left. Or am I missing something?
Click to expand...
Click to collapse
nope. EVERYONE with those battery cases are experiencing exactly what you are: no-one is figuring the loss of power from trying to charge a battery with a battery.
here is a test:
1.fully charge phone and case
2. kill phone
3. use case to recharge phone
4. kill phone
5. use case to recharge phone
6 repeat until the case no longer charges phone.
I bet it is just equalizing, not emptying the case (because that involves a "joule thief", and I am betting they did not bother with that circutry.) and you can kill the phone multiple times, getting less charge each time.