HP ProBook 640 G1 Laptop Battery

Battery Type: Lithium-Ion (Li-ion) Voltage: 10.8V / 11.1V (compatible range) Capacity: 4400mAh – 5200mAh (depending on model) Cell Configuration: 6-Cell battery design Compatibility: HP ProBook 640 G1 Series Protection Features: Overcharge, over-discharge & short-circuit protection Installation: Plug-and-play replacement