|The model you list is a model series.|
Your specific model - your particlar configuration of the hardware, the language of the software, etc. - is specified by one of the numbers shown, the Product number, which is also on the same label as the model series number on the bottom of the laptop:
HP lists 4 batteries for your model series, one is no longer available.
The last one is the high capacity one.
Normally a laptop comes with one of the ones with lesser capacity when it's new
You can buy any battery compatible with the same part numbers.
484170-001 Battery pack (Primary) - 6-cell lithium-ion (Li-Ion), 2.2Ah, 47Wh
484171-001 Battery pack (Primary) - 6-cell lithium-ion (Li-Ion), 2.2Ah, 55Wh
511872-002 Battery (Primary) - 6-cell lithium-ion (Li-Ion), 2.55Ah, 55Wh
Part 511872-002 is no longer supplied. Please order the replacement, 484171-001
484172-001 Battery pack (Extended) - 12-cell lithium-ion (Li-Ion), multi-charge options, 95Wh