The conversation on this page has been archived and is no longer active.

iBook battery only charges to 95%

Message #1 - Posted 2003/09/28 - ads123

I usually keep my iBook plugged in and I've noticed lately that it only charges to 95%. I recently plugged it into a UPS but I have also plugged it into other outlets and the 95% things still remains. Is this a sign the battery is going bad? Should I let it run down to empty and recharge it? I did that about two months ago -- this behaviour has started since then.

ads123

Message #2 - Posted 2003/09/28 - Andy Mulhearn

On Sun, 28 Sep 2003 17:31:03 +0100, ads123 wrote
(in message <bl72cl1dva@enews2.newsguy.com>):

I usually keep my iBook plugged in and I've noticed lately that it only charges to 95%. I recently plugged it into a UPS but I have also plugged it into other outlets and the 95% things still remains. Is this a sign the battery is going bad? Should I let it run down to empty and recharge it? I did that about two months ago -- this behaviour has started since then.

Mine does the same, apparently it's designed to avoid small discharge-charge cycles which are not good for the battery. If you unplug and let it go below 95% then charge it should go a all the up to 100%.

Andy

Message #3 - Posted 2003/09/29 - Hobo

Previously, Andy Mulhearn wrote:

Mine does the same, apparently it's designed to avoid small discharge-charge cycles which are not good for the battery. If you unplug and let it go below 95% then charge it should go a all the up to 100%.

When I bought my iBook in sept 2001 the battery would always charge up to 100%. I bought a replacement battery 3 weeks ago and it almost never goes beyond 98% or 99%. Is this because the new battery has this feature you just mentioned?

Message #4 - Posted 2003/09/29 - Andy Mulhearn

On Mon, 29 Sep 2003 9:41:33 +0100, Hobo wrote
(in message <noemail-6B7419.01413329092003@cnews.newsguy.com>):

Previously, Andy Mulhearn wrote:

Mine does the same, apparently it's designed to avoid small discharge-charge
cycles which are not good for the battery. If you unplug and let it go below
95% then charge it should go a all the up to 100%.

When I bought my iBook in sept 2001 the battery would always charge up to 100%. I bought a replacement battery 3 weeks ago and it almost never goes beyond 98% or 99%. Is this because the new battery has this feature you just mentioned?

I don't know. I don't believe it's in the battery and there's an apple knowledge base article here
http://docs.info.apple.com/article.html?artnum=88344 which describes what i see.

Andy

Need Help? Have a Question?

Looking for more help, comments, and answers?

Ask your questions on Ask Different. Ask Different is a community of Apple users ready to help.