View Full Version : Powerbook battery cycle count

Jan 1, 2006, 08:37 PM
I was just looking at the battery info for my PB which is about 1.5 years old... It says that my cycle count is 59. I was wondering how many cycles the average battery will do with a resonable charge time? My absolute max capacity is 4400.

I found the information with the following command:

ioreg -l -w 0 | grep IOBatteryInfo

beige matchbox
Jan 1, 2006, 09:10 PM
well, that command says mines done 139 cycles, and the max capacity is 4400

I'm getting 3-4 hours from a full charge, eg. light goes green.

So there should be lots more cycles left in yours :cool:

mad jew
Jan 1, 2006, 09:26 PM
Tiger has that information in System Profiler for those who think Terminal may bite. I've done 204 cycles on a battery that's about 1.5 years old FWIW. :)

Jan 1, 2006, 09:43 PM
My count is 1004... No typos there. My iBook's about 2 years old, as I got it for X-Mas two years ago. The current capacity is 996 out of an original 4400, and it only lasts about 50 minutes on a full charge. I bought a new battery from Apple last week, should be here Monday or Tuesday!! :D

Feb 19, 2006, 05:50 PM
It says that my cycle count is 59. I was wondering how many cycles the average battery will do with a resonable charge time?
I've got a new battery (two weeks) and it's cycle is 2.

I just starting looking for this because I was trying to decide which of my old batteries were better to carry around for a spare. Should I let the cycle count be the deciding factor?

One is at 372 and one at 204. The 372 is the one that I believe is the older one. So it's kind of a no brainer to keep to 204 on hand, right? (They're also 3567 and 3677 respectively for their capacity a lot closer than the cycles).

Or should I factor in other "stuff"?


Feb 19, 2006, 05:58 PM
The cycles is usually a very good indication of how the battery will perform. However, that command and system profiler give you even better information than the cycles. The capacity tells you how much power it has at a full charge. The higher the number the longer the battery will last no matter how you look at it.

Mine is 182 cycles, 22 months old, 4075 mAh max capacity.

Feb 19, 2006, 06:10 PM
My powerbook is a year old now.

216 cycles and now my battery is 4171 max out of an original 4400

getting about 3 hours.

(rev d 12")

Feb 19, 2006, 09:38 PM
Here are my results: Thought I would post them. this is a 5 year old TiBook with original battery... it lasts about a minute when unplugged. I don't have that many cycles, as it stayed plugged in a lot.
When plugged in:
Geoffs-Computer:~ geoff$ ioreg -l -w 0 | grep IOBatteryInfo
| | | "IOBatteryInfo" = ({"Capacity"=263,"Amperage"=0,"Cycle Count"=416,"Current"=258,"Voltage"=16212,"Flags"=838860805,"AbsoluteMaxCapacity"=3600})
| | | | "IOBatteryInfo" = ({"Capacity"=263,"Amperage"=0,"Cycle Count"=416,"Current"=258,"Voltage"=16212,"Flags"=838860805,"AbsoluteMaxCapacity"=3600})

When running on battery:
Geoffs-Computer:~ geoff$ ioreg -l -w 0 | grep IOBatteryInfo
| | | "IOBatteryInfo" = ({"Capacity"=263,"Amperage"=0,"Cycle Count"=416,"Current"=258,"Voltage"=15345,"Flags"=4,"AbsoluteMaxCapacity"=3600})
| | | | "IOBatteryInfo" = ({"Capacity"=263,"Amperage"=18446744073709551399,"Cycle Count"=416,"Current"=258,"Voltage"=15345,"Flags"=4,"AbsoluteMaxCapacity"=3600})

Any ideas why the amp count is so high on the last one?

Feb 19, 2006, 09:40 PM
I'm up to 159 cycles in just under a year. I haven't noticed any difference in the time I get out of the battery though.

Feb 19, 2006, 11:22 PM
Cycle Count=406 with my NewerTech battery from OWC. Still running longer than the Apple battery when it was new. Best purchase I've ever made.

Oct 15, 2010, 01:08 PM
Not sure if anyone watches this forum anymore but iowamensan: did you ever figure out why your amperage is so high? My ~2003 17" Powerbook also has 17-digit amp counts while on battery and lasts about a minute. It's not my primary computer anymore (phew!), so just curious!

Oct 16, 2010, 01:20 PM
Nope, never figured anything out. Not using the computer anymore.

Oct 16, 2010, 02:32 PM
Pretty weird. Thanks for the reply!