N900 stops charging and only charges until 72%
 

Hey guys,

well I have had my N900 since February and until some weeks ago I haven't had a problem with it. But then, one day I wanted to charge it and plugged it into the charger. After half an hour the phone made two little sounds. I looked at the phone and the orange LED was still blinking so I thought everything was still fine. But then I unlocked it and A) the battery symbol wasn't moving anymore and B) the LED was still blinking!. I unplugged it and tried again but after some minutes the same thing happened. Now the LED keeps blinking, it normally happens when the battery is charged by 72%. The thing is that when I unplug the phone, the normal message comes up! The one in a yellow bar upside. After that I tried to charge it by plugging it in to my PC. Well the same thing here. I bought a new battery, still the same. I flashed the phone with the latest software update and I keep having this problem.

So... any ideas? :D

Re: N900 stops charging and only charges until 72%
 

i am having the same prob..it stops charging after 86 percent.new battery just bought it yesterday

Re: N900 stops charging and only charges until 72%
 

You have to let it discharge properly until it shuts down by itself, then charge it to max (from the wall, not USB). Do you have original Nokia batteries?

Re: N900 stops charging and only charges until 72%
 

i had the stock battery for over a yr..due to low performance i bought a new battery.BL5J of 1430 mAh.after buying this battery this problem occured.

Re: N900 stops charging and only charges until 72%
 

That explains it.

Re: N900 stops charging and only charges until 72%
 

the new battery is also original.its 1430 mAh...BL5J...isnt there any way to fix this problem?

Re: N900 stops charging and only charges until 72%
 

trying to drain thw whole battery until turn off and charge it again..lets c...but y this problem is occuring the first place.any idea?

Re: N900 stops charging and only charges until 72%
 

Just to state the obvious, the Stock ORIGINAL battery is 1320mAh, the super SCUD battery is 1420mAh@1510mAh.
I would suggest that you charge it externally and if it still only goes to 86% then get another battery cause it might be the protective circuit in the battery that bad because of fake/crappy quality battery.

When you have your battery "fully" charged, then post the value here of "lshal | grep battery.voltage.current"

Re: N900 stops charging and only charges until 72%
 

AND WRITE FULLY!!!!!!!!!!

i really don't get all the short letters, im not in to the LAZY writing and have never been.

Re: N900 stops charging and only charges until 72%
 

my new battery stops charging after 86 percent and shows full.what shud i do.this is my new battery information after it sed fully charged.at 83 percent after i browsed for 10mins



BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ lshal|grep bat
battery.charge_level.capacity_state = 'full' (string)
battery.charge_level.current = 8 (0x8) (int)
battery.charge_level.design = 8 (0x8) (int)
battery.charge_level.last_full = 8 (0x8) (int)
battery.charge_level.percentage = 83 (0x53) (int)
battery.charge_level.unit = 'bars' (string)
battery.is_rechargeable = true (bool)
battery.present = true (bool)
battery.rechargeable.is_charging = false (bool)
battery.rechargeable.is_discharging = true (bool)
battery.remaining_time = 10800 (0x2a30) (int)
battery.remaining_time.calculate_per_time = false (bool)
battery.reporting.current = 1187 (0x4a3) (int)
battery.reporting.design = 1424 (0x590) (int)
battery.reporting.last_full = 1214 (0x4be) (int)
battery.reporting.unit = 'mAh' (string)
battery.type = 'pda' (string)
battery.voltage.current = 4088 (0xff8) (int)
battery.voltage.design = 4200 (0x1068) (int)
battery.voltage.unit = 'mV' (string)
info.capabilities = {'battery'} (string list)
info.category = 'battery' (string)
udi = '/org/freedesktop/Hal/devices/computer_power_supply_battery_bq27200_0'
battery.charge_level.current = 1670 (0x686) (int)
battery.charge_level.design = 2056 (0x808) (int)
battery.charge_level.last_full = 1724 (0x6bc) (int)
battery.charge_level.percentage = 97 (0x61) (int)
battery.charge_level.rate = 406 (0x196) (int)
battery.is_rechargeable = true (bool)
battery.present = true (bool)
battery.rechargeable.is_charging = false (bool)
battery.rechargeable.is_discharging = true (bool)
battery.remaining_time = 11040 (0x2b20) (int)
battery.reporting.current = 1670 (0x686) (int)
battery.reporting.design = 2056 (0x808) (int)
battery.reporting.last_full = 1724 (0x6bc) (int)
battery.reporting.rate = 406 (0x196) (int)
battery.reporting.technology = 'Li-ion' (string)
battery.reporting.unit = 'mAh' (string)
battery.technology = 'lithium-ion' (string)
battery.type = 'primary' (string)
battery.voltage.current = 4054 (0xfd6) (int)
info.capabilities = {'battery'} (string list)
info.category = 'battery' (string)
info.udi = '/org/freedesktop/Hal/devices/computer_power_supply_battery_bq27200_0' (string)
~ $

Re: N900 stops charging and only charges until 72%
 

battery reporting done..and i tried but cudnt buy the scud because they dont supply in my country.i contacted the supplier

Re: N900 stops charging and only charges until 72%
 

it's showing a voltage of 4.086V and that is about 85-90%, i still think that it is the battery you bought that is "faulty", if your old battery did charge to 100% (4.200V-4.230V), and you have not installed any power kernel og someting like that since you used your old battery.

Re: N900 stops charging and only charges until 72%
 

with my old battery i got a max of 96 percent and after discharging it.within few minutes on standby it used to come down to 93 percent. yes i had kernel power 47 installed.i am using karam's speed patch and battery patch. so does my battery information show that its fault.i hav contacted the man who sold me this battery. he sed that he will replace it with a stock one of 1320 mAh.what do you recommend.how to check it before buying it.

Re: N900 stops charging and only charges until 72%
 

you can't check before buying, that's also why i made my thread.

It is normal not to get to 100% charge because the N900 stops at 4.200V and 100% is 4.230V, more info in my thread.

your battery info from your phone is not wrong, i of course only go by voltage, and the voltage you posted is correct for approx 85-90% charge.

Re: N900 stops charging and only charges until 72%
 

Out of curiosity, can anyone link a decent desktop charger for the battery? I've tried finding one but all I can find are cheapo $3 ones, not sure of the quality of those.

Re: N900 stops charging and only charges until 72%
 

I'm using one of those direct plugs for charging bl5j batteries and haven't noticed a problem so far.

Re: N900 stops charging and only charges until 72%
 

You should PM dr_frost_dk... He is the battery expert around here. ;)

Re: N900 stops charging and only charges until 72%
 

Yes battery, i haven't been checking up on desk chargers, i usually make my own chargers for everything.

Re: N900 stops charging and only charges until 72%
 

the voltage post is correct for the battery then y does it stop after 85 percent.is there any solution? by the way i have ordered a scud battery from Lucia Lui.will it solve all other problems?

Re: N900 stops charging and only charges until 72%
 

I don't think anyone here can tell the future, so you will have to wait and see if it works right or not..... :rolleyes:

ps. I bought the scud battery about 1 month ago and it is working perfectly, and for me the percentage (after charging separately on an external socket charger) is 96-98% ... and I would also like to take this opportunity to thank dr_frost_dk for doing all the different battery tests for us! THANK YOU!!!

regards,
Csaba