Battery type: Li-ion; 6-cell; Capacity: 5200mAh/58Wh; Voltage: 11.1V (fit 10.8V) Replace for P/N: MU06 MU09 WD548AA WD549AA HSTNN-CB0X HSTNN-CBOW MU06 MU09 HSTNN-CBOW HSTNN-CBOX NBP6A174B1 HSTNN-OBOX HSTNN-I79C HSTNN-I81C HSTNN-IBOX HSTNN-LB0W HSTNN-LBoW 636631-001 593550-001 Compatible with: HSTNN-IB0X HSTNN-OB0X HSTNN-YB0X 586006-361 586006-321 HSTNN-Q61C GSTNN-Q62C CE-/FCC-/RoHS-Certified for safety; Grade A cells ensure fast charges and low power consumption Warranty: Full refund within 30 days/ Free replacement within 12-month/ 24hr Friendly Customer Service Support