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Discussion in 'MacBook Pro' started by rjheys, Jan 4, 2009.
yes correct. I would also calibrate your battery before bringing it to apple's attention that way you are as certain as possible of your battery health.
You can find instructions on calibrating your battery here.
Sounds about right. When you get up to about 500 cycles that is when you need to replace the battery.
Again I would calibrate the battery just to be sure that is correct. My MBP's battery is getting up there and I'm not looking forward to replacing the battery.
Go to your local Apple Store or call Apple and they will replace the battery for free if its less than a year old or if you have Applecare
A Slightly related question. Im Currently on 89% after 188 Cycles, will i be under the 300/80% Margin by the time i reach 300 cycles? Im hoping i will to get a free battery, and im not because, well its bad.
Don't sweat it. If it happens you get a free battery, if not you battery meets the specs.
Hi guys i seem to also have crappy battery life (24%) at 51 charge... though i did upgrade my mbp to 4gb ram... would this be a factor if i take it in to apple? i only get like 50~58mins or so of internet use before it dies - this is after calibration.
The RAM isn't related. you could definitely get a new battery.
Does it simply shut off with no warnig too? if so then theres a 99% chance of a new battery. I got one in about 10 seconds from the Apple Genius.
Today my battery is showing 98% Health after 189 Cycles...
My MBP battery is only holding about 20% of its original maximum charge with < 50 cycles on it. It's 16 months old. I took it to a "genius" on Saturday and he told me that was normal (which is pretty hard to believe). I have a 5 year old powerbook battery that has held up better.
Its very cut and dry. According to Apple.com, if you have under 80% with less than 300 cycles its bad.
Yeah, my problem is that I didn't realize my battery was a lemon until a couple of months after my warranty expired. My MBP is plugged in most of the time. The "genius" I talked to said it was basically my fault for not draining the battery more frequently. Would Applecare have covered me in this situation?
The key issue is not just one of just cycles, but of lifetime. If you leave your laptop plugged in and do 1 cycle a year, they won't cover you for 300 years if your health drops to 60%.
I've had a battery replaced out of warranty.
My battery is at 194 cycles and iStat reports 100% health, which is bull-$h1t BTW because when it was new I was getting 4+ hours and now only 3-3.5 hours with the same usage, so its not at 100% health anymore.
Unless your battery is miscalibrated, yes it is. iStat reads the same reports from the battery's microcontroller that the OS uses to let you know when the power is gone, and go to sleep.
I calibrated it like 3 weeks ago...
Late 2007 (December) 15"MBP
191 cycles 56% capacity
Applecare just replaced it without question.
Well done Apple.
In one word, no. (use warranty, if available, and get it replaced)