Replace the Battery | ProBook 455 G2 Notebook PC | HP Support - YouTube
Synergy Digital Laptop Battery, Compatible with HP ProBook 450 G3 (T6R24ES) Laptop, (Li-ion, 14.4V, 2200mAh) Ultra High Capacity, Replacement for HP RI04 Battery - Walmart.com
HP ProBook 450 G3 Battery Replacement - iFixit Repair Guide