What to do when a Lenovo thinkpad t470s battery cannot be fully charged in the standard charge time when the computer is powered off?

Solution: The battery might be over-discharged. Do the following:

    Turn off the computer.
    Ensure that the over-discharged battery is in the computer.
    Connect the ac power adapter to the computer and let it charge.

If a quick charger is available, use it to charge the over-discharged battery.

If the battery cannot be fully charged in 24 hours, use a new battery.

 The above sources from official website. 

Brand new lenovo thinkpad t470s 11.46V 2274mAh laptop batteries

    Voltage: 11.46V
    Capacity: 2274mAh (27Wh)
    Battery cells: 3-cell
    Chemical: Li-ion
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months

The battery is available here: https://www.storebattery.co.nz/lenovo-thinkpad-t470s-11.46v-2274mah-laptop-battery-store-for-new-zealand-p-197772.html