No, 90% health on a brand new battery is not normal. I'd take it back. It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time, but 90% is too low for brand new. Also, ignore what the store employees told you. Apple recommends that when you first get a Mac (applies also to new batteries), you should fully charge it when you first get it. There is no need to drain it, or to plug it in for a specific period of time, as long as you fully charge it when you first get it.Hi, I have a Macbook white mid 2010, and i just replaced my battery yesterday. The ppl in the mac store told me to use the initial charge, and when it's done plug it for 4 hours, and i did it. But after i unplugged it, i saw iStat Pro and CoconutBattery and they say that my battery's health is 90%...
Is that normal? I'm really concerned 'bout that... and i don't know if i have to ask for a guarantee for my new battery....![]()
It's not acceptable on a brand new battery with zero cycles.90% is perfectly acceptable.
(April 2010 MBP, 371 cycles, 90% battery health here.)
No, 90% health on a brand new battery is not normal. I'd take it back. It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time, but 90% is too low for brand new. Also, ignore what the store employees told you. Apple recommends that when you first get a Mac (applies also to new batteries), you should fully charge it when you first get it. There is no need to drain it, or to plug it in for a specific period of time, as long as you fully charge it when you first get it.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
No, the condition of the charger doesn't affect the battery's health.The repairment of the cable has something with the jump of the new battery from 100% to 90% health ?![]()
The Service Battery indication appears when the battery health drops to 75% or below. Your battery will continue to function with a lower health, but you won't get as much time on a charge. You can get it replaced anytime you choose to.491 cycles
38 months
67% health
At what percentage should I get a replacement? I've noticed my old gal isn't lasting as long as she used to
Edit: Just saw that I'm getting the Service Battery warning. Ruh roh.
No, the condition of the charger doesn't affect the battery's health.
The Service Battery indication appears when the battery health drops to 75% or below. Your battery will continue to function with a lower health, but you won't get as much time on a charge. You can get it replaced anytime you choose to.
The battery health is independent of the condition of the charger. If you switch chargers, your battery health remains the same.Why the condition of the charger doesn't affect the battery's health?![]()
The battery health is independent of the condition of the charger. If you switch chargers, your battery health remains the same.