REPLACEMENT DELL JKVC5, 312-1021, K456N, 5YRYV, 9JJGJ, NKDWV, TRJDK FOR INSPIRON 1464, 1564, 1764 SERIES LAPTOP BATTERY, HIGH CAPACITY 6 CELLS 5200MAH. 20% MORE POWER THEN ORGINAL BATTERY WITH LAPTOP IS 6 CELLS 4400MAH ONLY.