Xiaomi Charging Slowly After HyperOS Update in Northampton (2026 Fix)

If your Xiaomi, Redmi or POCO phone charges significantly slower after a HyperOS update, even when using the original charger, this guide covers the most common fixes. Slow charging after a system update is a known issue that affects several UK Xiaomi models.

Key Understanding

Slow charging after a HyperOS update does not automatically mean the battery or charging hardware has failed. First check the charger, cable, USB-C port, temperature and charging settings before assuming the update caused a hardware problem.

Before You Start – Quick Checks

  • Check you're using the original Xiaomi charger and cable – Third-party chargers and cables may not support the charging standards or power requirements of your specific Xiaomi model.
  • Clean the USB-C port – Even a small blockage can prevent proper contact.
  • Restart your phone – A restart can clear temporary software processes that may interfere with charging behaviour.
  • Check if the phone is too cold – In UK weather, charging speed may be reduced until the battery returns to a suitable temperature.
  • Avoid using the phone while charging – Heavy use during charging can slow speed and generate heat.

If these quick checks don't work, continue with the step-by-step guide below.

Quick Navigation

Diagnose the Issue First

Before making changes, use this quick diagnostic flow:

Quick Diagnostic Flow

  • Did the slow charging start immediately after a HyperOS update? → Likely software-related. Check charging settings first.
  • Is the phone in a cold room or has it been outdoors in UK weather? – Charging speed may be reduced until the battery returns to a suitable temperature.
  • Are you using the original charger and cable? – Third-party accessories often don't support fast charging speeds.
  • Does the phone charge normally when switched off? – If yes, a background app or system process is likely interfering.
  • Is the problem occurring on a specific affected model? – Redmi Note 12 Pro, Redmi Note 13 5G, and POCO models have known charging issues.

Why Charging Slows After HyperOS Updates

  • Optimised Charging or Battery Protection enabled by default – HyperOS has a battery protection feature that can limit charging speed and may prevent charging past 80%.
  • Cold weather protection – Charging speed may be reduced when the battery is cold to prevent long-term damage, until it returns to a suitable temperature.
  • Known HyperOS charging issues – Slow charging problems have been reported on Redmi Note 12 Pro, Redmi Note 13 5G, and other models after HyperOS updates.
  • Boost Charging setting disabled – Some models require "Boost charging speed" to be enabled in Settings to achieve full fast-charging speeds.
  • System reset of settings – Updates can reset charging-related settings, including Optimised Charging and battery protection preferences.

Northampton-Specific Notes

Local Context

  • Cold indoor environments – If your phone has been left in an unheated room, garage or vehicle during colder weather, allow it to return naturally to room temperature before testing fast charging.
  • Indoor charging – If charging becomes noticeably slower only when the phone is cold, temperature protection may be contributing to the reduced charging speed.

Step-by-Step Fixes

Step 1: Verify Charger and Cable

Why this matters: Using an underpowered charger with a fast-charge phone will result in slow charging. Many users assume the charger is the problem when it's actually a HyperOS setting.

  • Ensure you are using the original Xiaomi charger and cable bundled with your phone
  • Check the wattage – use the charger and cable recommended for your specific Xiaomi model to achieve its advertised charging speed
  • Try a different wall socket – unstable power delivery can affect charging

Note: Non-official chargers or cables may not support the charging standards or proprietary charging features required for your phone's maximum charging speed. For the most reliable test, use the charger and cable recommended for your specific Xiaomi model. [Source: Xiaomi UK Support]

If accessories are correct but charging is still slow, move to Step 2.

Step 2: Check USB-C Port

Why this matters: Foreign objects or dirt in the charging port can lead to poor contact and slow charging. [Source: Xiaomi Support]

  • Check the USB-C port for lint or debris
  • If it is obstructed, clean it carefully without forcing anything into the connector
  • If the port appears damaged or heavily obstructed, have it inspected professionally

If the port is clean but charging is still slow, move to Step 3.

Step 3: Check Battery Temperature

Why this matters: For safety and optimal user experience, charging strategies adjust the current based on temperature. Charging speed will slow down in high or low temperatures. [Source: Xiaomi Support]

  • If the phone is unusually cold, allow it to return naturally to room temperature
  • If the phone is hot, allow it to cool down before charging
  • Charging speed will return to normal once the device's temperature is within the recommended range [Source: Xiaomi UK Support]

Northampton tip: If you've been outdoors in cold weather, allow the phone to warm naturally before charging. Avoid using direct heat such as hair dryers or heaters.

If temperature is normal but charging is still slow, move to Step 4.

Step 4: Check Fast Charging or Boost Charging

Why this matters: If your Xiaomi model supports a Boost charging feature, check whether it is enabled. This setting speeds up charging within a safe temperature range. [Source: Xiaomi UK Support]

  • Settings → Battery → Additional features
  • Look for Boost charging speed or Speed up charging
  • If available, ensure it is toggled ON
  • Test charging speed

Note: This option is not available on all Xiaomi models.

If this doesn't help, move to Step 5.

Step 5: Check Battery Protection / Optimised Charging

Why this matters: HyperOS includes a battery protection feature that can limit charging speed and may prevent charging past 80%. This is often enabled by default after updates.

  • Settings → Battery → Battery protection
  • Look for Optimised charging or Battery Protection Mode
  • Toggle it OFF temporarily
  • Test charging speed

Important: This setting primarily affects charging near the top of the battery (80-100%). If your phone is slow from 0-50%, the issue is more likely temperature, charger, cable, or a software bug rather than battery protection.

Note: This is safe occasionally, but don't leave it off permanently if long-term battery health matters to you.

If charging speed improves, the issue was Optimised Charging. If not, move to Step 6.

Step 6: Restart and Install Latest HyperOS Update

Why this matters: Xiaomi sometimes releases quick fixes for charging issues. Some users have found that re-downloading and reinstalling the full update package resolves charging problems when the initial OTA update caused issues.

  • Restart your phone – Clears temporary software glitches
  • Settings → About phone → System update
  • Check for and install any available updates
  • If available, tap the menu icon (three dots) and select Download latest package or similar
  • Download and install the full update package
  • Restart your phone and test charging

Note: The "Download latest package" option may not be available on all Xiaomi models or HyperOS versions.

If this doesn't help, move to Step 7.

Step 7: Check Known Model/Build-Specific Issues

Why this matters: Charging problems have been reported for some Xiaomi models and HyperOS builds.

  • Models with reported issues:
    • Redmi Note 12 Pro 5G / Pro+ 5G – OS2.0.5.0.UMOINXM
    • Redmi Note 13 5G – OS2.0.2.0.VNQMIXM (Global)
    • Redmi Note 12S – OS2.0.2.0.VHZMIXM
  • Check for updates – Settings → About phone → System update
  • If you're on a known affected model and there's no update yet, move to Step 8.

Note: Check for the latest HyperOS update for your device. If Xiaomi has released a fix for your specific build, installing the latest available version should be your first step.

If this doesn't help, move to Step 8.

Step 8: Test Charging with Screen Off / Phone Idle

Why this matters: Charging speed can be affected by temperature and load. Charging while the screen is on is slower than when it is off. [Source: Xiaomi UK Support]

  • Close all apps and avoid using the phone while charging
  • Turn the screen off or leave the phone idle
  • Test charging speed with the phone switched off – if it's faster, a background app or system process is likely interfering

If charging is still slow, move to Step 9.

Step 9: Contact Xiaomi UK Support

Why this matters: If you've tried all steps and the problem persists, there may be a known issue affecting your specific model. Xiaomi is actively fixing charging issues in HyperOS updates.

  • Xiaomi UK Support Portal: mi.com/uk/support/
  • Send feedback: Settings → Services & feedback
  • Check Xiaomi Community forums for your specific model

Final Verdict – Decision Tree

Use this decision tree to determine the most likely cause and next action:

  • Slow charging started immediately after update → Check charger, cable, port, and charging settings first.
  • Phone is cold – Allow it to return to room temperature and test again.
  • Using original charger but still slow → Clean port and test with phone switched off.
  • Slow from 0-50% → Check temperature, charger, cable, and Boost Charging setting.
  • Slow mainly near 80-100% → Likely Optimised Charging or Battery Protection – temporary disable to test.
  • Known affected model → Check for updates – charging issues have been reported on Redmi Note 12 Pro, Redmi Note 13 5G, and others.
  • Persistent slow charging → Reinstall full update package and reset system settings.
  • Multiple models affected in Northampton → Check if cold weather is a factor in your charging location.

Frequently Asked Questions

Why did my Xiaomi start charging slowly after an update?

HyperOS updates can reset Optimised Charging settings, introduce temporary charging issues, or change battery protection behaviour. Charging problems have been reported on several models including Redmi Note 12 Pro and Redmi Note 13 5G.

Does cold weather affect Xiaomi charging speed?

Yes. Charging speed may be reduced when the battery is cold to prevent long-term damage, until it returns to a suitable temperature. In Northampton's cooler months, this is a common cause of slower charging.

Will a factory reset fix slow charging after an update?

Factory reset can help if there are system conflicts, but try the steps in this guide first – especially checking charger, cable, port, and charging settings. Some users have fixed charging issues by reinstalling the full update package.

Is disabling Optimised Charging safe?

It is safe occasionally if you need a quick top-up, but don't leave it off permanently if long-term battery health matters to you.

My Redmi Note 13 5G won't charge past 80% – what should I do?

This is a known issue on OS2.0.2.0.VNQMIXM. Check for the latest HyperOS update for your device. If Xiaomi has released a fix for your specific build, installing the latest available version should be your first step.

What is Boost Charging on Xiaomi?

Boost Charging is a setting available on some Xiaomi models that speeds up charging within a safe temperature range. If your device supports it, go to Settings → Battery → Additional features → Boost charging speed and toggle it ON.

Note: This guide is updated for 2026. Menu names may vary slightly between HyperOS and MIUI versions. Xiaomi is actively fixing charging issues in HyperOS updates – always check for the latest version.

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