... FYI the battery stops charging when it's FULL, and it won't charge if you battery level is at 95% to 100% so you don't have to worry about being 99% and it keeps charging to 100 then go back to 99%, it doesn't work like that. It simply won't charge itself unless it's below 94%.
And the battery is not removable in G46, it's best to keep it plugged in whenever possible and avoid using the battery if you want to prolong it's life. it's best to Keep it plugged in whenever you use it, unplug it if you not gona use it for a long period. It will not over-charge. The battery has been improved to not have memory effect like the old ones, but it's still limited to the number of recharges possible. Anyways don't have to worry about the battery life for few years, that's the life expectancy of laptops now days
Asus G46 vw
3rd Gen Intel® Core™ i7-3820QM processor
16GB-DDR Corsair Vengence 1600
128GB Samsung 830 Msata SSD + 750 GB HDD
GTX 660m + Windows 7 ultimate db Windows 8 pro