Anyway to reset chips on a battery?
Hello, I had my battery dead just two days ago.
The lithium ion battery doesn't have memory effect like NiCd battery.
However, when I left it uncharged for a day after using MacBook until it automatically went to sleep mode due to lack of battery juice.
Then when I came back home and found out that it said "Condition : Replace Now".
What is funny is that the cells don't seem to be dead. Although it still says 0%, after a while, it says 100% charged. If I unplug the power cable, I can use it for 3h or 3h 30m just like as it did before.
However, if I reboot it, it can't be rebooted. So, at this moment, I have to plugin the power cable. Then it says "0%"
As far as I know, the rechargeable battery has a chip to monitor battery state. The chip should be functioning whether the battery itself is charged or not. I believe the chip should have a power. Probably it has a on-chip-battery like SRAM. It seems to me that the chip is somehow not operating, not the battery cells are dead.
Is there a way to make the chip or whatever functions correctly?
I read this comment posted to Apple Store web site for the battery.
"Like another reviewer said, DO NOT LEAVE YOU LAPTOP IN SLEEP WHILE UNPLUGGED FOR OVER A DAY OR SO. In sleep mode it'll drain the batt far past it's reserve level and into the point of no return. I accidentally did it when I thought I shut my computer down, and now the batt shows 0% all the time, or a little slash through the battery icon. Sad face. Now I need a new battery. The lamest part of this is if you accidentally disconnect the power supply (trip over it or move the computer) the whole thing shuts off. (it's an obvious statement, but a "
There are a couple of messages like that.
It looks very reasonable, and it sounds like that the battery cells themselves don't seem to die.
There must be a way to reset the content of any memory which holds the battery information so that it reports to MacBook correct battery charge level.
I have used ThinkPad, PowerBook 140 and so on, but never had this problem. ( PB 140 battery did have memory effect, though. ) So, isn't this Apple's design fault for the battery or power manager of the OS X?
The lithium ion battery doesn't have memory effect like NiCd battery.
However, when I left it uncharged for a day after using MacBook until it automatically went to sleep mode due to lack of battery juice.
Then when I came back home and found out that it said "Condition : Replace Now".
What is funny is that the cells don't seem to be dead. Although it still says 0%, after a while, it says 100% charged. If I unplug the power cable, I can use it for 3h or 3h 30m just like as it did before.
However, if I reboot it, it can't be rebooted. So, at this moment, I have to plugin the power cable. Then it says "0%"
As far as I know, the rechargeable battery has a chip to monitor battery state. The chip should be functioning whether the battery itself is charged or not. I believe the chip should have a power. Probably it has a on-chip-battery like SRAM. It seems to me that the chip is somehow not operating, not the battery cells are dead.
Is there a way to make the chip or whatever functions correctly?
I read this comment posted to Apple Store web site for the battery.
"Like another reviewer said, DO NOT LEAVE YOU LAPTOP IN SLEEP WHILE UNPLUGGED FOR OVER A DAY OR SO. In sleep mode it'll drain the batt far past it's reserve level and into the point of no return. I accidentally did it when I thought I shut my computer down, and now the batt shows 0% all the time, or a little slash through the battery icon. Sad face. Now I need a new battery. The lamest part of this is if you accidentally disconnect the power supply (trip over it or move the computer) the whole thing shuts off. (it's an obvious statement, but a "
There are a couple of messages like that.
It looks very reasonable, and it sounds like that the battery cells themselves don't seem to die.
There must be a way to reset the content of any memory which holds the battery information so that it reports to MacBook correct battery charge level.
I have used ThinkPad, PowerBook 140 and so on, but never had this problem. ( PB 140 battery did have memory effect, though. ) So, isn't this Apple's design fault for the battery or power manager of the OS X?
iMac 17 & MacBook, Mac OS X (10.6.6)
