When should you connect your Hp 17-bs0xx to external power? Keep this in mind:

Connect the computer to external power under any of the following conditions:
● When charging or calibrating a battery
● When installing or updating system software
● When updating the system BIOS
● When writing information to a disc (select products only)
● When running Disk Defragmenter on computers with internal hard drives
● When performing a backup or recovery.

hp 17-bs0xx battery

Also the original hp 17-bs0xx 10.95V 2850mAh laptop battery is available on https://www.storebattery.co.nz/hp-17-bs0xx-10.95v-2850mah-laptop-battery-store-for-new-zealand-p-209950.html. Also you can search this battery according to battery part number like JC03, 919700-850, HSTNN-LB7V. 

Voltage: 10.95V

Capacity: 2850mAh (31.2Wh)
Battery cells: 3-cell
Chemical: Li-ion
Battery Color: black
Condition: new original battery
Warranty: 9 months

Testing and calibrating the HP JC03 battery using HP Support Assistant

HP JC03 Battery Check is a utility in HP Support Assistant that provides a simple but accurate test of the battery in Windows. To use HP Support Assistant to check and calibrate the battery, follow the instructions in this section.
   NOTE:
HP occasionally makes updates to HP Support Assistant. To download and install the latest version, go to the HP Support Assistant website.
In Windows, type HP Support Assistant into Search, then select HP Support Assistant in the Search results.
Select the My devices tab, then select your PC from the device list.
Select Diagnostics and tools, then select HP Battery Check.
Wait while the battery check completes.
HP Battery Check displays the battery status.
Source from support.hp.com

HP JC03 Battery

HP JC03 Battery

HP JC03 10.95V 2850mAh laptop batteries
Voltage: 10.95V
Capacity: 2850mAh (31.2Wh)
Battery cells: 3-cell
Chemical: Li-ion
Battery Color: Black
Condition: new original battery
Warranty: 9 months

Product link: http://www.storebattery.co.nz/hp-jc03-10.95v-2850mah-laptop-battery-store-for-new-zealand-p-205869.html