Battery Not Recognized, Not Charging - HP ZBook x2 Manual

Battery not recognized, not charging

Items
Symptoms
No battery status light
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Blinking amber (critically low battery level)
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● No boot without AC adapter
Procedures
Possible causes
Defective AC adapter and/or battery.
NOTE: Before proceeding, verify that the computer can boot to BIOS or Windows
with a good AC adapter.
Troubleshooting steps
Visual inspections
1. Inspect battery connectors for any signs of damage.
2. Verify that battery is installed properly in battery bay without gap or
obstructions and latch locks are tight. Reseat battery (for models with
removable batteries).
3. Determine whether battery gets hot (batteries heat up when charging, but not
too hot to touch).
Check battery warranty to see whether the battery is new or its warranty is expired.
Battery capacity degrades over time.
Verify front battery status light
1. Battery status light is off: battery not recognized.
2. Battery status light is blinking amber: critically low battery level.
Reset
1. Hard reset (8. Hard reset on page
2. Soft reset (9. Soft reset (Default Settings) on page
Verify AC adapter
1. Determine whether the computer needs the AC adapter to boot and operate.
Sometimes, intermittently bad AC adapter and loose connection between
adapter and computer results in inability to charge battery which causes short
run time.
2. Inspect AC adapter to verify that it is functioning.
3. Test with a working AC adapter and confirm whether battery is charging.
4. Be sure that battery is fully charged (AC adapter plugged in at least 2.5 hours).
Diagnostics: HP tools will report results such as passed, calibrate, weak, replace, no
battery and unknown, and suggest corresponding actions.
Use HP Hardware Diagnostics (UEFI)
on page 64)
HP PC Hardware Diagnostics (UEFI) is a good tool to use to isolate and
●
determine faulty battery, especially for quickly discharging (short life) battery.
Use HP Support Assistant tools in Windows
on page 66)
1. Verify that battery is recognized and charging.
2. Verify battery condition if battery cycle life is over specs (i.e., long life of 1000-
cycle life and 3-year warranty). Battery may have premature capacity loss
within its cycle life or warranty.
70)
71)
(6. HP Hardware Diagnostics and Tools
(HP Support Assistant (HPSA)
Common issues and possible solutions 81