I found that fully discharging and recharging such a battery 3-4 times will bring it back to (near) its original levels.
I've always had laptops plugged in all the time (desktop replacements) for months at end, with the battery acting as a UPS.
When first disconnecting the power adapter, the batteries always discharged much faster than they should. After a few cycles, they went back to normal.
I believe that leaving a laptop plugged in all the time is better for the battery than doing complete discharge-recharge cycles (5-100%).
I've always had laptops plugged in all the time (desktop replacements) for months at end, with the battery acting as a UPS.
When first disconnecting the power adapter, the batteries always discharged much faster than they should. After a few cycles, they went back to normal.
I believe that leaving a laptop plugged in all the time is better for the battery than doing complete discharge-recharge cycles (5-100%).