It’s a bit embarassing buy I’m gonna say it. Brought my MBP for upgrading to Maverick. The vendor found my trackpad not working well as it is less sensitive. After he said that, I realized probably his right. It maybe a progressive problem thru time for last 4 yrs coz I’m used to it. He said it’s the battery problem that causes the trackpad to become less sensitive esp in pressing the corners. He advised me to change the battery and I agreed. After brought home, the charger light always remain orange with indicator remains at 99%. It never reach 100%. When run on battery, it went dead twice even with abt 30% strength left. Than I realized the readings after checking Battery Information. Cycle Count is already 99 Condition: Check Battery I shld hv checked all these info first before paying. Trusting the vendor too much. Now I suspected the battery could be either recycled or cloned. I called him informing him this problem and his prepared to replace it. Questions: 1) Can the battery affect the sensitivity of the trackpad? 2) Supposing he replace another battery, how can I tell under Battery Information that the battery is original? I don’t have the time to stay there to watch him opening a new package. 3) Under Condition: Check battery – what does this means? I can’t be paying good money for such a battery. Tks for advise.