Battery Consumption gone crazy since new SD Card

[Guest Stevieblueyez]

Hi,

I did do a cursory search before posting this and didn't see any similar topics so hopefully this isn't a repost.

I just purchased a 16GB SD card from play.com (PNY 16GB Micro SD Memory Card / Class 10 (Mobile) ) to replace my old 8GB card (I bought the old 8gb card about a week after the Nokia N95 came out so it was a few years old)

Prior to the swap over I was getting at least 24-48 hours of standby from the OSF. Since changing to the 16gb I barely make it to 8PM without hearing the phone make it's Battery Low noise.

I looked up the forum to charge fully, then turn off and change again, then delete battery stats, but not seen any major signs of improvement. I took the phone off the mains charge at about 07:00 this morning and it's dropped 2 bars already at 13:35.

By 18:00 today it'll be in the red zone and by 20:00 it'll be sounding the battery low and somewhere between 20:00 and 21:00 it'll die.

Anyone come across this before?

Edited May 12, 2011 by Stevieblueyez

[Guest ColdEmbrace]

Hi,

I did do a cursory search before posting this and didn't see any similar topics so hopefully this isn't a repost.

I just purchased a 16GB SD card from play.com (PNY 16GB Micro SD Memory Card / Class 10 (Mobile) ) to replace my old 8GB card (I bought the old 8gb card about a week after the Nokia N95 came out so it was a few years old)

Prior to the swap over I was getting at least 24-48 hours of standby from the OSF. Since changing to the 16gb I barely make it to 8PM without hearing the phone make it's Battery Low noise.

I looked up the forum to charge fully, then turn off and change again, then delete battery stats, but not seen any major signs of improvement. I took the phone off the mains charge at about 07:00 this morning and it's dropped 2 bars already at 13:35.

By 18:00 today it'll be in the red zone and by 20:00 it'll be sounding the battery low and somewhere between 20:00 and 21:00 it'll die.

Anyone come across this before?

Seems highly unlikely that an SD card can cause a huge battery drain unless your phone is trying too access files on the SD card constantly. Did you have apps stored on the SD card before change over, did you remember too copy them too?

Also check for backgroup apps that may be zapping power.

I don't claim too know much about SD Cards but i own a 16GB one Class 4 I think, idk how too tell but I get 48hours before low battery notification on light usage.

[Guest pa49]

Hi,

I did do a cursory search before posting this and didn't see any similar topics so hopefully this isn't a repost.

I just purchased a 16GB SD card from play.com (PNY 16GB Micro SD Memory Card / Class 10 (Mobile) ) to replace my old 8GB card (I bought the old 8gb card about a week after the Nokia N95 came out so it was a few years old)

Prior to the swap over I was getting at least 24-48 hours of standby from the OSF. Since changing to the 16gb I barely make it to 8PM without hearing the phone make it's Battery Low noise.

I looked up the forum to charge fully, then turn off and change again, then delete battery stats, but not seen any major signs of improvement. I took the phone off the mains charge at about 07:00 this morning and it's dropped 2 bars already at 13:35.

By 18:00 today it'll be in the red zone and by 20:00 it'll be sounding the battery low and somewhere between 20:00 and 21:00 it'll die.

Anyone come across this before?

Class 10s use considerably more power and will suck the life out of your battery and therefore reduce usable time.

If you have apps installed on the card that won't help either!

[Guest jimwormold]

Class 10s use considerably more power and will suck the life out of your battery and therefore reduce usable time.

If you have apps installed on the card that won't help either!

I've not heard this before - do you have a reference to somewhere I can read up about this?

[Guest Anil k Solanki]

Class 10s use considerably more power and will suck the life out of your battery and therefore reduce usable time.

If you have apps installed on the card that won't help either!

I'm sorry but pa49's assertion is totally untrue. A higher class memory card simply has memory cells that can change from one state to another faster, therefore read & write faster. It has absolutely nothing to do with power consumption.

Your battery drain woes have nothing to do with the card, perhaps the data on the card is creating a problem? A simple and quick test would be, charge your handset to 100%, Turn off your handset, remove the SD card, once booted turn the handset to Airplane mode. Now leave the phone running for an hour or so without touching it or launching any apps, then check and see what level the battery is at.

If you have a huge drain on your battery your problem is not the SD card, if everything seems normal, reinsert the SD card, connect to a PC, backup the contents of the card, then reformat the card in Windows (Fat32). Rinse and repeat the process. if your problem is solved, copy back the data to your card, rinse & repeat.

I hope this is helpful.

Anil

[Guest dandroidme]

Power consumption varies depending on individual cards and in fact Class 10 cards are allowed to use 2x as much power as slower cards (200mA vs 100mA) - they need "High Speed" mode to acheive the rating and the extra power may be needed to drive the interface faster (not necessarily for the flash itself). Go to sdcard.org, download the simplified spec (part 0) and it's in section 3.9.6 if you are massively interested...

However, unless you're constantly reading/writing to the card (not a good thing) it should be powered down most of the time and won't make a massive difference over the course of a day - I think it's almost unheard of for there to be such a difference just from changing cards. You could be the first, or you could possibly have a misbehaving out of spec card; there's always a few around in the first year or so of a new feature being available.

f.