HP ProBook 440 G1 Battery Replacement - iFixit Repair Guide
Synergy Digital Laptop Battery, Compatible with HP ProBook 450 G1 Laptop, (Li-ion, 10.8V, 4400mAh) Ultra High Capacity, Replacement for HP FP06 Battery - Walmart.com
HP ProBook 440 G1 replacement battery 56Wh - sparepartworld.com
NEW Genuine HP FP06 FP09 Battery HP ProBook 440 445 450 470 G0 455 G1 708457-001 - Newegg.com
HP FP09 Battery For ProBook 440 445 G0 450 G1 @ Best Price Online | Jumia Kenya