New 11.55V RE03XL L32656-005 Laptop Battery for HP ProBook 450 G6 440 G6 430 G6 - Newegg.com
Amazon.com: DR. BATTERY 851610-855 RR03XL Laptop Battery Replacement for HP ProBook 430 440 450 455 470 G4 ProBook 440 450 470 G5 66 Pro G1 Mt20 Series 851477-421 851610-850 HSTNN-PB6W HSTNN-Q01C [11.4V] : Electronics
Amazon.com: HP RR03XL 11.4V 48Wh Notebook Battery for HP ProBook 430 G4,440 G4,450 G4,455 G4,470 G4,430 G5,440 G5,450 G5,455 G5,470 G5, HP MT20, MT21 Mobile Thin Client Series : Electronics
How to Battery Replacement HP ProBook 455 G5 Disassembly - YouTube