?Dual Series Precise Compatibility? Replacement for HP Probook 640 645 650 655 G0 G1 CA09 CA09XL, Perfect Match Part No.: CA06XL, HSTNN-DB4Y HSTNN-LB4X HSTNN-LB4Y HSTNN-LB4Z HSTNN-LP4Z. ?Business Long Life? 56Wh high-density lithium-ion battery supports 7-8 hours of office work (based on MobileMark test), 30% more usage time than third-party batteries ?HP Original Standard? HP Smart Battery certified, compatible with all HP Battery Health Manager functions (including charging threshold settings). ?Military Grade Durability? Passed MIL-STD-810G shock/drop test, 6 series aluminum alloy shell is 200% more impact resistant than ordinary batteries. ?Worry-Free Replacement? 12 months long warranty + free installation video guide, enterprise users enjoy bulk purchase discounts. ? Professional HP Battery Solution Manufactured with grade A+ lithium-ion cells to meet HP's original performance specifications. ? Compatibility Guarantee: Compatible with Laptop Models: HP ProBook 640 G0 HP ProBook 640 G1 HP ProBook 645 G0 HP ProBook 645 G1 HP ProBook 650 G0 HP ProBook 650 G1 HP ProBook 655 G0 HP ProBook 655 G1 Replacement for Battery Original Part Numbers: CA06 CA09 CA06XL CA06055XL 718677-421 718677-421(3icr19-66-2) 718678-421 718755-001 718756-001 E7u21ut-nrp-000 HSTNN-DB4Y HSTNN-LB4X HSTNN-LB4Y HSTNN-LB4Z HSTNN-LP4Z Hstnn-i15c-4 Hstnn-i15c-5 Hstnn-i16c Hstnn-db4y Hstnn-lb4y Hstnn-lb4x Hstnn-lb4z ? Technical Specifications: Capacity: 56Wh / 10.8V 5200mAh(6-cell configuration) Battery Type: Lithium-ion Polymer Special Feature: Supports HP BIOS Battery Health Detection. ? Pro Business Tips: Enable ?Maximize Battery Health? mode to extend cycle life up to 500 cycles. Fully charges and discharges once a month to maintain accurate battery metering. ? Professional Packaging: 1 CA06XL Replacement Battery 1 User Manual