How can I replace the wortmann terra mobile 1515 parts?

Today's promotion: Brand new wortmann terra mobile 1515 14.8V 2950mAh laptop batteries

    Price: N$104.69, free shipping
    Voltage: 14.8V
    Capacity: 2950mAh (44Wh)
    Battery cells: 4-cell
    Chemical: Li-ion
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months
    Shipping time:7-15 business days

The battery is available here: https://www.storebattery.co.nz/wortmann-terra-mobile-1515-14.8v-2950mah-laptop-battery-store-for-new-zealand-p-423699.html