How many hours are you getting on your MBAs (13")?
I'm getting roughly 6-7 on light usage and it still doesn't feel like it's enough. lol
Bluetooth off, screen brightness on 4th bar from the lowest setting.
Ok.. so how bad is it that my 21 months MBA has dropped to 79% current capacity?
I have reached 830 cycles Is that too much? I use it for work and pretty much anything else, but its life is almost the same (it changed a bit when I upgraded to Mountain Lion). The battery life varies from time to time. When I work it lasts even for 4 h (wi-fi on, music on, 2 browsers on).
When I travel, it lasts up to 5-5 1/2 h. When I'm traveling I watch only movies, the wi-fi is 98% of the time turned off.
My biggest problem is that now (for 2 days) it shows from time to time Service Battery. Have I reached a critical situation where I really really have to change it? My battery life is influenced somehow by that?
I'm assuming you have a 2011 MBA. If that is the case, the battery is rated for 80% after 1000 charge cycles. You've pretty much have used up its life, especially being at 830 charge cycles. The service battery message is coming up because you have dropped below 80%. You might be able to get the health above 80% for a little bit longer, but asa it continues to drop the service battery message won't go away until you replace the battery.
My girlfriends battery only last to 450 charges before dropping below 80%. Even though it is rated at 1000 cycles, different factors will change that number.