- Phones and tablets
- Android phones and tablets
Battery health: Reduced
Google Pixel Battery health Reduced: capacity below 80 percent
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Low
Quick answer
If Settings, Battery, Battery health shows "Reduced", your Pixel estimates the battery holds less than 80 % of its original capacity. Google recommends a replacement; the phone keeps working, just with shorter runtime.
Safety first
Stop and check this first
- With a swollen battery, Google says not to press on the glass or back cover, not to pry the phone open and not to put it in household waste: stop charging it and use official repair.
- Before sending the Pixel for repair, Google advises backing up and doing a factory reset, which erases all data on the phone.
Safe checks you can perform
- Check the status and estimated capacity
- Look up charge cycles and battery dates
- Review Battery health assistance
- Look for a lifting screen or back cover
Leave these tasks to a qualified professional
- Do not attempt this professional task: Battery replacement through Google repair service
- Do not attempt this professional task: Warranty claim if the battery degrades early
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Battery replacement through Google repair service
What they doGoogle recommends replacing the battery when the status is Reduced and handles repairs through Google Store Repair, by mail or walk-in depending on the country.
They must show youthe battery health status and capacity reading before and after the swap.
In writingthe repair number, the IMEI or serial number, whether the battery is under warranty and what you will be charged.
Warranty claim if the battery degrades early
What they doGoogle states that the Pixel warranty covers defective batteries during the warranty period, alongside any rights under local consumer law.
They must show youthe cycle count and date of first use their tool reads.
In writingthe warranty decision with the reason and the case reference.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Check the status and estimated capacity
- Who:
- you, on a Pixel 8a or later.
- How:
- open Settings, tap Battery and then Battery health; for the percentage tap Battery capacity. Note whether the status reads Normal, Reduced or Unavailable.
- Result that matters:
- the exact status and estimated capacity reported by the phone itself.
- If it reads Reduced:
- capacity is under 80 % and Google recommends replacing the battery.
- If it reads Unavailable:
- the phone cannot determine the status and it is worth asking support.
- Evidence to keep:
- a screenshot of the Battery health screen with the capacity shown.
Evidence: Understand your Pixel battery
Look up charge cycles and battery dates
- Who:
- you, on a Pixel 8a or later.
- How:
- open Settings, tap About phone and then Battery information. Write down the cycle count, the manufacture date and the date of first use, and compare them with the 1000 cycles Google gives as the reference for these models.
- Result that matters:
- knowing whether the battery has reached the cycle count at which replacement is recommended.
- If it is at or near the reference figure:
- the Reduced status fits expected wear.
- If it shows few cycles yet reads Reduced:
- ask support to consider the warranty.
- Evidence to keep:
- a screenshot of the Battery information screen with cycles and dates.
Evidence: Understand your Pixel battery
Review Battery health assistance
- Who:
- you, on a Pixel 6a up to Pixel 9 Pro Fold.
- How:
- in Settings, Battery, Battery health, open Battery health assistance and check whether it is on. Google explains it lowers the maximum voltage in stages from 200 cycles and may slightly change charging speed.
- Result that matters:
- understanding whether slightly shorter runtime comes from this software adjustment.
- If it is on:
- Google recommends keeping it on to protect long term battery health.
- If you have a Pixel 9a:
- the feature is on by default and cannot be turned off.
- Evidence to keep:
- the toggle state and the exact model of your Pixel.
Evidence: Understand your Pixel battery
Look for a lifting screen or back cover
- Who:
- you, without pressing on the phone.
- How:
- lay the Pixel on a table and look from the side for any gap between the screen or back cover and the frame. Google explains that a swollen battery can lift the screen and let liquid or dust in.
- Result that matters:
- ruling out or spotting a swollen battery before you keep charging the phone.
- If there is no gap:
- the battery has only lost capacity and you can plan the replacement.
- If the screen is lifting:
- stop using and charging it and go to Google's repair options.
- Evidence to keep:
- side photos of the phone showing the gap, taken without squeezing the body.
Evidence: Understand your Pixel battery
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Phones and tablets
- Brand
- Product type
- Android phones and tablets
Known code variants
- batería Reducida Pixel
- battery capacity Reduced
- Battery health Reduced
- Battery health Unavailable
- capacidad de la batería Reducida
- estado de batería No disponible
- Estado de la batería Reducida
- Pixel battery Reduced
- Reduced battery health
What it means
Google's help page "Understand your Pixel battery" explains that Battery health (Pixel 8a and later, not Pixel Tablet) compares estimated capacity with the original and labels it "Normal", "Reduced" (below 80 %) or "Unavailable". Google notes that initial values come from lab results and may differ from the actual battery state. It is an estimate, not proof that a part is faulty. Other models or versions may not show it.
Warnings and stop conditions
- Highsource verified
With a swollen battery, Google says not to press on the glass or back cover, not to pry the phone open and not to put it in household waste: stop charging it and use official repair.
Evidence: Understand your Pixel battery
- Mediumsource verified
Before sending the Pixel for repair, Google advises backing up and doing a factory reset, which erases all data on the phone.
Evidence: Understand your Pixel battery
Symptoms and causes
Probable causes · in order
- Normal wear from charge cyclesCommon
Google says batteries from Pixel 3 to Pixel 8 Pro and Pixel Fold keep up to 80 % for about 800 cycles, and from Pixel 8a onwards for about 1000.
Evidence: Understand your Pixel battery
- Long exposure to heat while used or chargedPossible
Google advises charging at about 25 °C and avoiding six hours or more above 35 °C ambient, because temperature affects how long the battery lasts.
Evidence: Understand your Pixel battery
- Initial estimate differs from the real stateLess common
According to Google, initial battery health values are based on lab results and may not match the actual condition of your unit.
Evidence: Understand your Pixel battery
Virtual technician
Does Battery health: Reduced still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Google · 2026 · official_doc
- 2
Información sobre la batería de tu Pixel
Google · 2026 · official_doc
- 3
Google · 2026 · official_doc
Was this entry useful?