102%?! That's really really dangerous. You need to wrap your laptop in a duvet and leave it for a couple of days in case it explodes!
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Your Battery Life at 400 Cycles?
- Thread starter Terenc3
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Exactly. Unless it's a dramatic drop in health before 1000 cycles, comparing a battery's health is meaningless.
The chip that's keeping count of the cycles will disable your battery long before the actual cells wear out. It is programmed to start cutting down on capacity after the cycle number passes certain thresholds (1000 and greater), for safety reasons.
That's completely false. There are many whose batteries are still running fine after well over 1000 cycles. Just because it reaches 1000 cycles doesn't mean it's no longer a good battery.
No, I didn't mean it will disable the battery at 1000, but it will gradually allow less power in when recharging. All "smart" batteries now have these chips to regulate the charging mechanism (trickling down in the last few % for example), and with cycle count threshholds programmed in them as well.
As cycle counts goes passed certain pre-set safety thresholds, the chip will regulate the charging accordingly and cut off the charge at lower capacities and can even render the battery inoperable (cannot be charged) when it reaches dangerous levels in terms of cycles, even if from a chemical standpoint it still has some capacity left.
I can't remember where I read about this. I'm looking for the article that explains this mechanism and how flashing the EEPROM and resetting the cycle count of dead batteries can bring them back to life again (but very dangerous to do so!).
I'll post a link when I find it.
I don't know where you read that, but it's not true about Apple batteries. There's no such thing as "dangerous levels in cycles."
It is perfectly normal if your battery health (maximum capacity) is greater or less than 100% when new or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the Apple Notebook Battery FAQ.
Well I can't seem to find it.
So I'll admit that I could be wrong or that I misunderstood what I read.If I come across it again, I'll post it up.
*hides*
No need to hide. If you find it, be sure to post it. There's a lot of misinformation out there. It would be interesting to know where such ideas get started.Well I can't seem to find it.
If I come across it again, I'll post it up.
*hides*
Haha, well obviously that was just a joke. But yeah, I could swear I read that some integrated charge controllers had kill-switches based on cycles, as well as the standard monitors that are in place for things such as temps, voltages, etc. with regards to regulating the charging mechanism.
mine is so far so good- i just try and remember to calibrate it once a month. It's good practice for taking care of your battery.
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries. Read the Apple Notebook Battery FAQ in post #6.
What? 631 cycles in 1 year? Do you spend 24/7 on this machine?? Seems abnormally high? My MBP is 2 years old and I use it daily off the charger and I'm at 379 cycles and 87%.
No, I take my laptop everywhere I go and I use it on battery more than using it on AC since I'm not always near an outlet. Even if I am, normally I don't feel the need to plug it in just because there's an outlet.
Normally, the only time it's 100% charged it at night when I'm asleep
Hmm.. I thought 1 cycle was = to a battery reaching full charge, in other words you must be charging too 100% 2 times per day to get 671 in 1 year?? Just put a new battery in my 13" MBP charged it full 1 time shows one cycle.
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Read the WHAT IS A CYCLE? section of the following link. This should answer most, if not all, of your battery questions:
Well, battery cycles for me isn't something I follow religiously. In fact, if you do have to follow it closely, you should probably find something else to do, no offense.
I just let it naturally be.
Thanks for the link.
Ok based on this information 1 charge cycle = expending the full capacity of the battery. 621 cycles still seems odd in 1 year.
Wirelessly posted (iPhone 4s: Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)
My unibody alu mac is on 301 cycles at 92% health.
Wasn't those ment to be 300 cycle batteries??
My unibody alu mac is on 301 cycles at 92% health.
Wasn't those ment to be 300 cycle batteries??
that works out to about 1.7 cycles a day. While that may be high for many users, it's not unusual.Thanks for the link.
Ok based on this information 1 charge cycle = expending the full capacity of the battery. 621 cycles still seems odd in 1 year.
Read the BATTERY LIFESPAN section of the Battery FAQ.
None taken.
I agree, but when your once 6-8 hour battery only holds a charge for 2 hours... well it's something that gets your attention and you might want to check out how many cycles it's been through!