PR06 Notebook Battery For HP Probook 4540S 4530S 4440S 4430S 4540S Series 58Wh | eBay
Amazon.com: GHU Premium 58Wh Battery PR06 Compatible with Battery for HP ProBook 4530s, 4540s, 4430s, HP Spare 633805-001, QK646AA - UL CE FCC Tested, Long-Lasting, Easy Installation, Reusable 500 Times : Electronics