Earbud runtime testing
Battery life numbers are meaningful only when the test conditions travel with them. Volume, phone, codec, noise-control mode, firmware, temperature, interruptions and battery age can change a result, while the left and right earbuds may not stop at the same time.
Direct answer
Fully charge the identified sample, confirm firmware and battery indicators, then run continuous playback from one source device with a fixed playlist, connection, volume and listening mode. Log start time, interruptions, low-battery alerts and the shutdown time of each earbud. Repeat the same conditions, then test how many controlled earbud recharges the case provides without claiming more than the observed sample showed.
Use this before requesting a quotation
Record the earbud and case model, sample ID, firmware, source phone, operating-system version, charger, cable and approximate sample age. Photograph the starting indicators. Similar housings can contain different cells or firmware, so the result belongs to this exact set.
Use the agreed cable and power source, allow the earbuds and case to reach their stated full indicators, then note any settling period before playback. If the app and case indicators disagree, record both instead of choosing the more favorable reading.
Choose one locally stored playlist or repeatable audio file, one phone, one volume setting and one stable connection. Record ANC, transparency, spatial features, equalizer and microphone use as on or off. Note room temperature without implying a formal environmental test.
Start a visible timer with playback. Write down pauses, calls, reconnections, low-battery prompts and control use. Record when the first earbud warns, when each side stops and whether playback resumes after returning it to the case. Do not average away a meaningful left-right difference.
Recharge under the same method and repeat the run. A single cycle may reflect an incomplete charge, an interruption or indicator error. Compare the two observations and investigate large differences before using the sample as an approval reference.
After a controlled earbud discharge, recharge both earbuds from the case without connecting external power. Record each completed or partial recharge and the case indicator after every cycle. Stop when the case can no longer complete the agreed recharge condition.
Write the sample runtime beside every condition and repeat count. Keep supplier specifications in a separate field. Production variation, user volume, calls, signal conditions, features, temperature and battery aging can change actual use, so approve a test method and tolerance rather than a detached headline.
Reusable buyer brief
Sample ID, model, firmware and age: Source phone and operating system: Audio file or playlist: Volume setting and connection state: ANC, transparency, EQ and other modes: Room condition and start charge indicators: Start time and interruptions: Left earbud alert and shutdown time: Right earbud alert and shutdown time: Second-run result and difference: Case recharge cycles and final indicator: Observed result, issue and approval decision:
Fill only the details relevant to your request
Before you send the request
Use a fully charged identified sample, fixed source device, content, volume and feature state. Time each earbud separately, log interruptions and repeat the same cycle before accepting an observed runtime.
Use the mode relevant to the intended claim or buyer use case, and state it. If both ANC-on and ANC-off matter, run separate controlled rows rather than mixing them in one average.
The sides can carry different processing, microphone or connection loads, and cell variation is possible. Record both results. A large or inconsistent gap needs investigation against the approved sample.
No. It creates a reference under recorded conditions. Production acceptance needs an agreed sampling plan, method and tolerance, with results tied to the actual production lot.
Keep the request specific
A claim such as all-day battery can hide the volume, mode, device and definition of a full cycle. For sourcing, keep the raw start and stop times, left-right result and case recharge log. That record is more useful than rounding one favorable sample into a marketing number.
Send this checklist on WhatsAppEditorial method
This worksheet is built around repeatability rather than a promised duration. It separates supplier specifications from timed sample observations and preserves the device, software, feature, volume, charge and interruption conditions that make two battery results comparable.
Ready with the key details
Send the product reference, estimated quantity and destination so the conversation starts with useful context.
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