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One NL25 earbud isn’t charging

Updated

Symptom

One NL25 earbud doesn’t charge in the case, even though the case light is on and the other earbud works normally.


Quick Fix

First check that the contacts are clean and any protective film is removed, then do a factory reset by holding the case button for 5 seconds with the lid open.

A classic case. One bud charges dutifully, the other lies in the case like a teenager on the couch – doesn’t react to anything. The case light is on, so there’s power. The problem is somewhere between the earbud and the case.

Good news: most of the time this can be fixed at home without service. Bad news: sometimes it can’t. Let’s go through both scenarios.

Check these first

Before you fear the worst, go through the basics:

  • Protective film on the contacts. If the earbuds are new, check that there isn’t still a thin plastic film on the charging pins on the bottom of the earbud. It must be removed. Sounds silly, but this is a surprisingly common cause.
  • Dirt on the contacts. There are small metal charging points in the case and on the bottom of the bud. Earwax, pocket lint, and other life’s grime build up on them over time. Wipe them with a dry cotton swab or microfiber cloth. You can also use a little isopropyl alcohol, but don’t pour it in by the bucket.
  • Bud’s position in the case. Make sure the earbud sits properly in the case. Press it down gently and check that it clicks into place. Sometimes a memory-foam tip keeps the bud slightly off the contacts.

Factory reset

If the contacts are clean and the bud sits correctly in the case, try resetting:

  1. Put both buds in the case
  2. Open the lid
  3. Hold the buttons on both buds until the light turns red
  4. Press the button on the back of the case and hold it for 5 seconds
  5. The case light blinks – the reset is done
  6. Close the lid, wait a moment, and open it again

The reset clears the earbuds’ pairing and restarts the charging process. Often that’s enough to bring the lazy bud back to life.

Try this too

If the reset didn’t help, try charging the case for at least an hour with a USB-C cable before trying again. Sometimes the case battery is so low it can’t charge both buds at the same time – even if the light is on.

Also try swapping the buds in the case – left to right and right to left. If the “broken” bud charges on the other side, the problem is the case’s contact, not the earbud itself. This information is useful for service.

If that doesn’t help

If none of the above worked, the fault is most likely either the bud’s battery or the case’s charging contact. In either case, the device needs service.

Send us an email at info@valco.fi and include:

  • Your order number
  • A photo of the earbud in the case (so we can see the condition of the contacts)
  • A brief description of what you tried

Our service in Kajaani will fix these. During the warranty period (24 months) it’s handled at no extra cost. After the warranty we’ll still repair it – then the repair package just costs a bit.

We don’t throw away earbuds because of a single faulty component. That would be crazy – and exactly what the big brands would like us to do.

Still stuck?

We get it — technology should just work. If these steps didn't help, our support team is ready. Include the following when reaching out:

  • Your product model and firmware version
  • A description of the issue
  • Steps you've already tried from this article

Small disclosure: we're a tiny company and none of us has time to hand-write all these articles, so they were generated by AI. Some of it is bound to be total crap. If this article is wrong, misleading, or just bad, flag it for us — we go through the flagged ones and either fix them or kill them.

Valco NL25 true wireless ANC earbuds

NL25

In stock

Jussi Timosen muotoilu ja Jasse Kestin virittämä äänimaailma tekevät NL25:stä kuulokkeet, jotka saavat korvasi hyräilemään onnesta. Ne istuvat lähes jokaiseen korvaan kuin etusormi sieraimeen ja tuovat studiotason äänen keskelle arkea. Uusin teknologia takaa, ettei NL25 vanhene heti käsiin – ja päivitysten myötä ne saattavat jopa parantua, toisin kuin me.