⚠️ IMPORTANT BUYING NOTICE:

• CA06 Cylindrical External Layout Blueprint: This professional-grade 10.80V Lithium-Ion (Li-ion) replacement battery pack features a standard 6-cell stick-profile casing layout measuring exactly 204.60 x 49.00 x 20.55 mm and weighing 391.45 g. Designed for seamless user access, this external module slides cleanly into the rear docking bay of your notebook's outer chassis framework and locks instantly into position using a spring-loaded physical slider toggle, requiring no technical installation tools.

• Model Generation & Platform Verification (Crucial Rule): This high-efficiency power pack is custom-engineered exclusively to bridge the first-generation (G0/G1) corporate mainstream HP ProBook 640, 645, 650, and 655 series laptops. Please note that it will not fit subsequent generations (such as the ProBook 640/650 G2, G3, G4, G5, or newer variants), which utilize entirely non-interchangeable internal flat ribbon batteries or alternative external configurations (like the CI04 profile), distinct structural alignment grooves, and different voltage settings. Before completing your checkout, slide your laptop's physical release tabs, remove your stock battery, and verify that its casing explicitly features tracking markers like CA06, CA06XL, CA09, HSTNN-DB4Y, or 718755-421.
  
  

⚡ DEPENDABLE MOBILITY & COMMERCIAL BUSINESS RUNTIME RESTORATION: Recover the original wireless freedom and active multi-tasking endurance of your corporate workstation or enterprise notebook fleet with this brand-new, premium replacement external battery engine. Assembled around six high-density cylindrical cells and optimized for a stable 10.80V circuit layout, this battery module delivers a consistent, heavy-duty capacity rating of 5200 mAh (56.00 Wh). It smoothly handles enterprise software suites, multi-tab web browsing, office document workflows, remote virtual meetings, and daily professional multi-tasking. It serves as an immediate, drop-in remedy to correct common age-related hardware wear symptoms, including rapid battery percentage drops, processing thermal throttling under sudden application loads, or an immediate system blackout whenever you disconnect your factory AC wall charger. Outfitted with an on-board smart protection microchip array, it continuously safeguards your investment from over-charge, over-discharge, unexpected short circuits, and localized internal heat shifts.

Compatible Original Part Numbers: CA06, CA06XL, CA09, CA09XL, 718677-421, 718678-421, 718755-421, 718756-421, HSTNN-DB4Y, HSTNN-IB4X, HSTNN-LB4X, HSTNN-LB4Y, HSTNN-LB4Z, HSTNN-LP4Z, TPN-Q133

Comprehensive Laptop Compatibility List:

HP ProBook Mainstream Enterprise 640 / 645 Series

• HP ProBook 640 G0 & G1 Mobile Fleet: ProBook 640 Series, 640 G0, 640 G1, 640 G1 (F2R10UT), 640 G1 (G3K49PA)

• HP ProBook 645 G0 & G1 AMD Fleet: ProBook 645 Series, 645 G0, 645 G1, 645 G1 (F2R16UT)
  
  

HP ProBook Mainstream Enterprise 650 / 655 Series

• HP ProBook 650 G1 Mobile Fleet: ProBook 650 Series, 650 G1, 650 G1 (F2R25UT), 650 G1 (G2F54PA)

• HP ProBook 655 G1 AMD Fleet: ProBook 655 Series, 655 G1, 655 G1 (F2R33UT)
  
  

Disclaimer: The batteries and other products supplied by our Company are [replacement for] sold for use with certain products of computer manufacturers, and any reference to products or trademarks of such companies is purely for the purpose of identifying the computers with which our products [are replacement for] may be used. Our Company and this Website are neither affiliated with, authorized by, licensed by, distributors for, nor related in any way to these computer manufacturers, nor are the products offered for sale through our Website manufactured by or sold with the authorization of the manufacturers with which our products [are replacement for] may be used