I've finally gone Wireless and got it set up yesterday with my Inspiron 8100. (I used D-Link router and PC card) After barely ever using my I8100 away from its home desk I'm finding my battery life is terrible! Maybe an hour total! I got a message that it was half gone and had "an hour" left and it died in 15 minutes. Is the battery burned out from leaving it in the I8100 for a year+ and not using it? Will it "come back" if I discharge it a few times (I thought these Lithium batteries didn't work that way). Should I cave in and buy a new battery? TIA SCD