TechFuel TD06, HSTNN-UB68, HSTNN-UB69, KU531AA, 482962-001 Battery for HP EliteBook 8440p, 6930p ProBook 6440b, 6445b, 6450b, 6540b, 6545b, 6550b, 6555b Laptops - Professional 6-cell 48Wh This TechFuel battery replaces HP 458640-542 | 482962-001 | 484786-001 | HSTNN-CB69 | HSTNN-IB68 | HSTNN-IB69 | HSTNN-UB68 | HSTNN-UB69 | HSTNN-XB24 | HSTNN-XB59 | HSTNN-XB61 | HSTNN-XB68 |HSTNN-XB69 | KU531AA batteries. High performance 6-cell Li-ion spare battery pack produces 10.8V (volts) and 4400mAh/48Wh of power storage capacity; Lithium-ion battery can support up to 500 complete charges over its lifetime, making it a valuable long-term investment for your HP tech and hardware. TechFuel batteries have advanced circuit board technology including thermal circuit protection for safety, stability, and performance; grade-A cells are used in all TechFuel battery packs for faster charging and more efficient power consumption with up to 500 charge cycles over the life of the battery TechFuel lithium-ion batteries are built to reliably power your laptop; operating time will vary depending upon computer settings and hardware use; generally 1 hour of operation for 2000mAh of capacity Customer support is included in your purchase; if you need help with your new replacement battery, our US-based, knowledgeable staff are ready to assist; your purchase comes with a no-hassel 30-day money back guarantee and a 1-year full replacement warranty