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Old 12-13-2006, 01:20 PM   #1 (permalink)
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I have had the Pearl for about 2 months. I usually keep it charging all day in the office. I used to leave work at night with a full charge and by morning (not many calls just a bunch of emails, etc..), it was just under full bar capacity. All of a sudden in the morning it is down to 3 bars or so and dropping.

1. what is the best method to charge these batteries to max its life?

2. cheapest source for replacement batteries? I saw one advertising an OEM for $19.95 and others for $39.95. Can you trust an OEM for this battery? What is recommended as good cheap batteries. For other phones I had always used cell phone accessories - Nokia, Motorola, Sony ericsson, Samsung, LG, Nextel, Sanyo, Kyocera, Audiovox accessory (from China) and they had proven to be the cheapest and reliable but they don't carry Pearl batteries yet.

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Old 12-13-2006, 01:30 PM   #2 (permalink)
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Quote:
Originally Posted by hkozlovsky
I have had the Pearl for about 2 months. I usually keep it charging all day in the office. I used to leave work at night with a full charge and by morning (not many calls just a bunch of emails, etc..), it was just under full bar capacity. All of a sudden in the morning it is down to 3 bars or so and dropping.

1. what is the best method to charge these batteries to max its life?

2. cheapest source for replacement batteries? I saw one advertising an OEM for $19.95 and others for $39.95. Can you trust an OEM for this battery? What is recommended as good cheap batteries. For other phones I had always used cell phone accessories - Nokia, Motorola, Sony ericsson, Samsung, LG, Nextel, Sanyo, Kyocera, Audiovox accessory (from China) and they had proven to be the cheapest and reliable but they don't carry Pearl batteries yet.

Thanks
What OS version are you running on your Pearl?
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Old 12-13-2006, 01:31 PM   #3 (permalink)
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1. Let it run completely dead and then let it completely charge before using it.

2. OEM stands for 'Original Equipment Manufacturer'. You have an OEM battery in your phone.
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Old 12-13-2006, 01:38 PM   #4 (permalink)
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Quote:
Originally Posted by mckinneycm
1. Let it run completely dead and then let it completely charge before using it.
Wrong, wrong and... wait for it... wrong.

This is a common mistake that for some reason is being spread around the forum. Discharging the battery before recharging will do absolutely nothing to lengthen the life of your battery because it is not subject to the "memory effect" that the old-school Ni-Cd batteries were plagued by.

If your battery is losing its lifespan its simply because of the number of charges you're running it through. It dies over time like any other batter. Whether you discharge it fully or charge part-way through, your battery has a specific lifespan and the more you use your BB, the shorter your BB will last.

For more info on the different battery technologies and how they compare, have a look here: Google Answers: Lithium vs. Ni-MH Rechargeable Batteries
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Old 12-13-2006, 02:03 PM   #5 (permalink)
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Ok, -1 for me, but how do explain 2 months of battery life. They should definitely have a longer life span than that.
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Old 12-13-2006, 02:13 PM   #6 (permalink)
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Quote:
Originally Posted by stac
What OS version are you running on your Pearl?

.064

Thanks
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Old 12-13-2006, 02:16 PM   #7 (permalink)
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Quote:
Originally Posted by mckinneycm
1. Let it run completely dead and then let it completely charge before using it.

2. OEM stands for 'Original Equipment Manufacturer'. You have an OEM battery in your phone.

My Mistake. How come a site will sell it for $19.95 RIM Blackberry Pearl 8100 BATTERY: Cell phone batteries replacement batte and others $39.95 if they are from original manufacturer?
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Old 12-13-2006, 02:31 PM   #8 (permalink)
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Quote:
Originally Posted by hkozlovsky
.064

Thanks
You really should consider upgrading to either the Telefonica or Cingular OSes... I and many others have upgraded to this release for the battery savings alone... I'm getting at least a 50% bump in battery life with the new OS.

About the battery issue - the user who posted earlier is correct. Lithium Ion batteries have a number of 'recharge cycles' that they are good for. A 'recharge cycle' is defined as a time that you plugged in the device and it starts charging. So, charging it at home, going to work and syncing the device with your computer, plugging it into a car charger on the way home, and replugging it to charge overnight would claim 4 recharge cycles from your battery, regardless of whether you charged it to full capacity or not. Modern Lithium Ion batteries are generally good for 300-600 recharge cycles before they start to take a dump... and if you plug in your phone every chance you get, you are doing yourself a disservice... YMMV, but this is my understanding of how it all works...

Peace,

Stac
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Old 12-13-2006, 02:39 PM   #9 (permalink)
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Quote:
Originally Posted by stac
You really should consider upgrading to either the Telefonica or Cingular OSes... I and many others have upgraded to this release for the battery savings alone... I'm getting at least a 50% bump in battery life with the new OS.

About the battery issue - the user who posted earlier is correct. Lithium Ion batteries have a number of 'recharge cycles' that they are good for. A 'recharge cycle' is defined as a time that you plugged in the device and it starts charging. So, charging it at home, going to work and syncing the device with your computer, plugging it into a car charger on the way home, and replugging it to charge overnight would claim 4 recharge cycles from your battery, regardless of whether you charged it to full capacity or not. Modern Lithium Ion batteries are generally good for 300-600 recharge cycles before they start to take a dump... and if you plug in your phone every chance you get, you are doing yourself a disservice... YMMV, but this is my understanding of how it all works...

Peace,

Stac

Thank you. I will know for the future as I likely burned it out.

I am still waiting on any recommendations for battery replacement sites?

Thanks
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Old 12-13-2006, 03:28 PM   #10 (permalink)
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Quote:
Originally Posted by stac
So, charging it at home, going to work and syncing the device with your computer, plugging it into a car charger on the way home, and replugging it to charge overnight would claim 4 recharge cycles from your battery, regardless of whether you charged it to full capacity or not...

Stac
So anytime someone plugs into the USB port to do something with Desktop Mgr, this counts against the battery life?

Can you connect to Desktop Mgr via BT? If so, I guess this would result in battery drain due to the radio usage, which would then lead to the need to charge sooner.
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Old 12-13-2006, 03:29 PM   #11 (permalink)
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Do you have anything running (like IM clients) that do constant polling of the data connection? That might be draining your batt.
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Old 12-13-2006, 03:31 PM   #12 (permalink)
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^^ yeah that would do it.

My friend had the same problem he showed me his blackberry and the blue tooth was on thats another contributing factor of batteries dyin fast i shut it off for him and he says its much better now...
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Old 12-13-2006, 03:46 PM   #13 (permalink)
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Quote:
Originally Posted by NonCom
So anytime someone plugs into the USB port to do something with Desktop Mgr, this counts against the battery life?

Can you connect to Desktop Mgr via BT? If so, I guess this would result in battery drain due to the radio usage, which would then lead to the need to charge sooner.
Theoretically, yes. In practice, though, the 'recharge cycle' limits are not hard/fast limits - every battery is different. I don't think it makes sense not to use the desktop manager/usb charging when necessary - for myself, I use the desktop sync stuff judiciously.

Stac
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Old 12-13-2006, 04:03 PM   #14 (permalink)
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Quote:
Originally Posted by stac
You really should consider upgrading to either the Telefonica or Cingular OSes... I and many others have upgraded to this release for the battery savings alone... I'm getting at least a 50% bump in battery life with the new OS.

About the battery issue - the user who posted earlier is correct. Lithium Ion batteries have a number of 'recharge cycles' that they are good for. A 'recharge cycle' is defined as a time that you plugged in the device and it starts charging. So, charging it at home, going to work and syncing the device with your computer, plugging it into a car charger on the way home, and replugging it to charge overnight would claim 4 recharge cycles from your battery, regardless of whether you charged it to full capacity or not. Modern Lithium Ion batteries are generally good for 300-600 recharge cycles before they start to take a dump... and if you plug in your phone every chance you get, you are doing yourself a disservice... YMMV, but this is my understanding of how it all works...

Peace,

Stac


I download the Cingular .69 upgrade and installed it on my PC. I assume I can leave my desktop software at the same T-mobile level. When I went to app loader, it did not offer me an option to install any upgrade. What am I doing wrong?
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Old 12-13-2006, 04:09 PM   #15 (permalink)
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Quote:
Originally Posted by hkozlovsky
I download the Cingular .69 upgrade and installed it on my PC. I assume I can leave my desktop software at the same T-mobile level. When I went to app loader, it did not offer me an option to install any upgrade. What am I doing wrong?
Search your computer for the vendor.xml file and delete that file - then re-run the app loader...

Stac
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Old 12-13-2006, 05:43 PM   #16 (permalink)
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Quote:
Originally Posted by stac
About the battery issue - the user who posted earlier is correct. Lithium Ion batteries have a number of 'recharge cycles' that they are good for. A 'recharge cycle' is defined as a time that you plugged in the device and it starts charging. So, charging it at home, going to work and syncing the device with your computer, plugging it into a car charger on the way home, and replugging it to charge overnight would claim 4 recharge cycles from your battery, regardless of whether you charged it to full capacity or not. Modern Lithium Ion batteries are generally good for 300-600 recharge cycles before they start to take a dump... and if you plug in your phone every chance you get, you are doing yourself a disservice... YMMV, but this is my understanding of how it all works...
That's not really correct...
links to follow (in my 11th post heh)
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Old 12-13-2006, 05:44 PM   #17 (permalink)
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Sorry about that...

see here: Apple - Batteries

or for a much more thorough investigation, here (and other pages on this site): Battery performance as a function of cycling

Last edited by fgizzard : 12-14-2006 at 12:19 AM.
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Old 12-13-2006, 08:44 PM   #18 (permalink)
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Quote:
Originally Posted by srotman
Wrong, wrong and... wait for it... wrong.

This is a common mistake that for some reason is being spread around the forum. Discharging the battery before recharging will do absolutely nothing to lengthen the life of your battery because it is not subject to the "memory effect" that the old-school Ni-Cd batteries were plagued by.

If your battery is losing its lifespan its simply because of the number of charges you're running it through. It dies over time like any other batter. Whether you discharge it fully or charge part-way through, your battery has a specific lifespan and the more you use your BB, the shorter your BB will last.

For more info on the different battery technologies and how they compare, have a look here: Google Answers: Lithium vs. Ni-MH Rechargeable Batteries
Actually, there's more to this. the battery state you see on the Pearl's screen is a calculated, not a measure value. Running your battery down ocaisionally and the charging it fully recalibrates the gas guage so that the indicated state is more accurate. There is also the belief in the battery industry that when you do charge your battery, it should be to full capacity and not some interim level.
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Old 12-14-2006, 12:02 AM   #19 (permalink)
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guys try visiting batteryuniversity.com for all your concerns regarding rechargeable batteries
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