When mine started to get old, I could leave my laptop plugged up all week, and it still would die within two hours of being unplugged even when set to the power saver power plan aka low performance.
If your battery is going bad, then maybe your system can't read the amount of charge left accurately.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kotch_Foot_Milo</div><div class="ubbcode-body">My laptop just started playing a trick on me.
If I'm running it on the battery alone it dies with approx 50% left showing on the battery life display.
Any thoughts? </div></div>
Lythium batteries dies while still showing a full charge because as it ages it looses the ability to release it's charge.
So if It is showing 50% and not running long enough it is a sign That the battery is on it's last legs.
Lucky it is not your iPhone.
You simply would have to trade it St the closest Mac store.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kotch_Foot_Milo</div><div class="ubbcode-body">My laptop just started playing a trick on me.
If I'm running it on the battery alone it dies with approx 50% left showing on the battery life display.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Peasie</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kotch_Foot_Milo</div><div class="ubbcode-body">My laptop just started playing a trick on me.
If I'm running it on the battery alone it dies with approx 50% left showing on the battery life display.
Any thoughts? </div></div>
I think I am keeping my laptop away from yours </div></div>
Just go get a new pack. When you recover from the sticker shock, stay near an outlet. It's never worth it IMO to get another battery pack unless it under warranty, especially at the prices of today's laptops. You might be lucky enough to have a popular laptop and the pack is around $50, but I doubt it. Even when you discharge the batteries properly, most packs have a limit of charge/discharge cycles and as posted they eventually loose the original capacity. In the old days, we used to be able to hack the battery pack to restart the charge/discharge counter. I haven't bothered in a while. Not worth the time anymore in our disposable society.
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