What's going on

When an Anker earbud stops charging while its twin charges normally, the root cause is almost always an interrupted electrical connection between the case's power delivery pins and the earbud's external contact points. True wireless earbuds rely on low-voltage DC current transferred via microscopic spring-loaded pins (pogo pins). Because skin oils, earwax, and moisture collect on the earbud body, even an invisible film of oxidation can disrupt this low-voltage bridge.

In other cases, the issue is logical rather than physical. Anker Soundcore cases utilize onboard micro-controllers to detect when an earbud enters the dock. If the earbud battery drops below a critical voltage threshold, the case may fail to recognize it altogether. You can review general earbuds hardware issues across different brands to see how common this behavior is.

Symptoms people notice

• Single-side audio output: Only the left or right earbud turns on when removed from the case.
• LED status mismatch: Inserting the healthy earbud causes the case LED to pulse, but inserting the dead earbud produces no light activity.
• Intermittent connection: The non-charging earbud briefly connects to Bluetooth while inside the open case, then immediately drops off.
• App mismatch: The Anker Soundcore application shows a green charging icon for one side and a greyed-out icon or missing indicator for the other.

Likely causes

1. Contact contamination: Dust, earwax, or skin oils creating an insulating barrier over the gold plating.
2. Stuck case pogo pin: One of the spring-loaded pins inside the charging pocket is jammed downward, preventing physical contact with the earbud.
3. Aftermarket ear tips: Third-party silicone tips holding the earbud a fraction of a millimeter too high off the charging bed.
4. Deep battery sleep: The earbud battery cell discharged so low that its protective circuit locked out standard charging.
5. Corrosion or fluid ingress: Sweat or water entered the charge pocket, degrading the terminal connections.
6. Internal hardware failure: A blown charging chip inside the case or a failed cell inside the earbud stem.

Quick checks first

Before assuming a permanent hardware failure, perform these basic triage checks:

• The Wiggle Test: Place the non-charging earbud into the pocket and press down gently with your finger. If the case LED lights up only while you apply pressure, a collapsed pin or mechanical obstruction is preventing contact.
• Strip the Tips: Pull off the silicone ear tips completely and dock the bare earbuds. If both charge properly, your ear tips are interfering with the magnetic pull.
• Try a Direct Wall Cable: Connect your charging case to a known-good 5V wall adapter rather than a high-wattage laptop charger or PC USB port.

When it's a real hardware fault

If cleaning and resetting do not restore charging, the fault likely lies within the sealed hardware. Because true wireless earbuds are sealed with heavy adhesives to meet IPX water-resistance standards, replacing individual lithium-ion micro-cells or internal micro-soldered leads is generally not feasible for DIY repair.

Physical indicators of a dead hardware component include:

• Visible rust, green verdigris, or black burn marks on the internal pogo pins.
• A pogo pin that remains completely flush with the plastic floor of the pocket and cannot be dislodged.
• The earbud rapidly heating up inside the case without retaining any battery charge.

If you are considering replacing your set or want to see how different brands compare in long-term durability, check our latest earbuds reviews and explore specific models from Anker.

Soft resets vs board/panel work

Performing a soft reset reboots the micro-controller in the charging case and forces it to re-evaluate the resistance across both charging channels. This clears logic loops where the case incorrectly assumes a pocket is empty.

However, if a pogo pin spring is snapped internally or the earbud's micro-battery has suffered permanent chemical degradation, a software reset will not help. Unlike larger electronics like TVs or laptops where power supply boards can be swapped, earbuds feature non-serviceable glued assemblies. Opening an Anker earbud housing almost always destroys the plastic shell and compromises water resistance.

Next steps

If your earbud remains completely dead after executing all cleaning and reset procedures:

1. Verify your purchase date. Anker typically provides an 18-month warranty on Soundcore products.
2. Contact Anker support with your order details and model number; they frequently offer single-earbud or case replacements under warranty.
3. If out of warranty, consider acquiring a standalone replacement earbud or case on secondhand markets, ensuring you perform a hard reset to pair the replacement piece with your original set.