Headphones & earbuds

Headphones or earbuds stop charging at a certain percentage (like 80%)

This is often an intentional battery-health charging limit feature designed to extend long-term battery lifespan, not a malfunction, though it can also indicate a charging fault in some cases. Checking the app for a battery care setting clarifies which it is.

Difficulty
Easy
Time
10–20 minutes

Symptoms

  • Charging consistently stops at the same percentage every time
  • Battery indicator shows charging has completed below 100%
  • Feature seemed to appear after a firmware or app update
  • No such limit existed when the headphones were first purchased

Likely causes

  • CommonIntentional battery care/optimized charging feature enabled in the appSome manufacturers now include a setting that caps charging around 80–90% to reduce long-term battery wear, similar to phone battery health features.
  • PossibleCharging cable or adapter unable to deliver enough power to reach a full charge in the expected timeA weak power source might cause charging to appear to stall well before completion.
  • PossibleBattery degradation causing the device to reach its effective maximum earlierAs batteries age, their effective full-charge capacity can decrease, which may display differently depending on the device.
  • Less commonFirmware bug misreporting charge statusA display bug could show an incorrect charge percentage despite actually reaching full charge.

What to do

  1. Check the companion app for a 'battery care', 'optimized charging', or similar setting that intentionally limits charge percentage.
  2. If such a feature exists and is unwanted, review the app for an option to disable it or charge to 100% on demand.
  3. Try a different charging cable and power adapter to rule out insufficient power delivery.
  4. Let the headphones sit on the charger for longer than usual to see if the percentage eventually increases past the apparent limit.
  5. Check the app or manual for any documentation specifically mentioning charge-limiting features for your model.
  6. If no such feature exists per the documentation, and charging genuinely won't progress past a certain point, this may indicate a charging fault.

When to call a pro

If no battery care feature is documented for your model and charging still won't progress past a certain percentage even with a good cable and adapter, contact the manufacturer's support, since the battery may need service.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.