[coin]

> I would just add to this, don't keep battery at 100% (unplug it when it's done charging)

Absolutely incorrect. What makes you think that keeping a 100% charged battery plugged in bad? The device has its own charging circuitry that stops charging when full.

[sireat]

Anedoctal evidence, my SOs Dell's battery is basically dead(about 2-3minutes of charge) even though it has spent 95% of time plugged in fully charged.

Laptop forums are full of stories like this.