Asus zenbook 14 ux425ea-bm098t battery charge indicator does not light up. What's wrong?

Fristly, this is not always the battery problem. Firstly, you may check whether the power adapter or battery pack is attached correctly. You may also disconnect the power adapter or battery pack, wait for a minute, then reconnect them again to the power outlet and Notebook PC.

asus zenbook 14 ux425ea-bm098t battery

Brand new asus zenbook 14 ux425ea-bm098t 15.48V 4347mAh laptop batteries

    Voltage: 15.48V
    Capacity: 4347mAh (67Wh)
    Battery cells: 4-cell
    Chemical: Li-ion
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months

The battery is available here: https://www.storebattery.co.nz/asus-zenbook-14-ux425ea-bm098t-15.48v-4347mah-laptop-battery-store-for-new-zealand-p-465751.html

What should you do when get a new acer concept d 3 ezel cc315-72p-76l8 battery pack

Before you use a battery pack for the first time, there is a conditioning
process that you should follow:
1. Connect the AC adapter and fully charge the battery.
2. Turn  on  the  computer  and  complete  setting  up  the  operating
system.
3. Disconnect the AC adapter.
4. Operate the computer using battery power.
5. Fully deplete the battery until the battery-low warning appears.
6. Reconnect the AC adapter and fully charge the battery again.

Follow  these  steps  again  until  the  battery  has  been  charged  and
discharged three times.

acer concept d 3 ezel cc315-72p-76l8 battery

Brand new acer concept d 3 ezel cc315-72p-76l8 11.55V 3634mAh laptop batteries

    Voltage: 11.55V
    Capacity: 3634mAh (41.9Wh)
    Battery cells: 6-cell
    Chemical: Li-Polymer
    Battery Color: black
    Condition: new original battery
    Warranty: 9 months

 For more details please kindly visit https://www.storebattery.co.nz/acer-concept-ezel-cc315-72p-76l8-11.55v-3634mah-laptop-battery-store-for-new-zealand-p-498909.html

General knowledge about Hp spectre folio battery

WARNING! To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP.

When a charged battery is in the computer and the computer is not plugged into external power, the computer runs on battery power. When the computer is off and unplugged from external power, the battery in the computer slowly discharges. The computer displays a message when the battery reaches a low or critical battery level.
Computer battery life varies, depending on power management settings, programs running on the computer, screen brightness, external devices connected to the computer, and other factors.

NOTE: When you disconnect external power, the display brightness is automatically decreased to conserve battery charge. Select computer products can switch between graphic controllers to conserve battery charge.

 The above sources from official manual. 

 

original Hp spectre folio battery

A original Hp spectre folio battery is available here: https://www.storebattery.co.nz/hp-spectre-folio-13-7.7v-7050mah-laptop-battery-store-for-new-zealand-p-261543.html