CMF by Nothing Buds 2: problems, parts and running costs
Checked: 2026-10-05
Summary
Battery wear is the problem to plan around: a 2026 owner reports severe degradation near the end of the first year, with fast earbud drain and a case that no longer holds charge, and the earbuds have no documented user-replaceable battery. Sound is bass-forward — independent testing measured a bass elevation of roughly 5-9 dB above its preference curve, plus distortion at higher levels — while the noise cancelling itself rated strong for the price class. There is nothing to spend on year after year: no consumables beyond optional ear tips, no documented paid add-ons, and USB-C charging only. The Nothing US store sells the Buds 2 directly and lists them below their original listed price, which is where the value case holds; buyers who want flatter sound or a serviceable battery should pass.
Common problems and fixes
- Battery degradation near the end of the first year — one 2026 owner reports fast earbud drain and a case that no longer holds charge late in year one. It is a single report and does not show how common the fault is. Nothing documents a user-replaceable battery or a public parts program, so the fix is a warranty or return claim, not a battery swap; exact US handling of battery faults is not documented. [1][2][4]
- Failures to connect or play sound — another exact Buds 2 owner reports repeated connection and playback failures after several months. It is not established whether later firmware changed this, so re-pair through the Nothing X app and re-seat both buds in the case first; a fault that persists is a return case. [5]
- Bass-forward tuning — SoundGuys measured a bass elevation of roughly 5-9 dB above its preference curve, and the signature stays bass-heavy even after the improvement over the earlier model. The fix is in the Nothing X app: pull the low end down with EQ or leave Ultra Bass off. [3]
- Distortion at higher levels — SoundGuys found measurable distortion in its listening test. Lower the volume or re-fit the ear tips with a different included size; there is no part to replace. [3]
- The 48 dB ANC claim overstates what you get — Nothing’s claimed 48 dB is a peak marketing maximum, not a whole-band figure, and measured peak attenuation came in lower, even though ANC still rated strong for the class. Expect the useful reduction in low-frequency transport and HVAC noise, not silence. [2][3]
- No wireless charging — the case takes USB-C only, and the box includes a USB-C cable, so there is no Qi pad in the setup. [3]
- Sealed batteries with no service path — the earbuds are IP55-rated but not documented as user-serviceable, so battery wear ends the life of the set rather than one cell. Keep the purchase receipt, because the return window is what protects you. [1][2]
Parts and consumables
- Silicone ear tips (no part number published) — a spare set ships in the box. These are the only consumable; no store price or replacement interval appears in the research, and no owner reports replacing them on a schedule. [1][3]
- Charging case (no part number published) — supplied in the box. A case that no longer holds charge is a warranty matter, not a part swap, since no replacement case is offered through a documented parts program, and no case price is listed in the research. [4]
- Earbuds (no part number published) — no single-bud or spare-bud replacement channel is documented for the set, so a lost bud goes through warranty or return. [1][2]
Yearly running cost
These earbuds have no recurring consumables and no documented paid add-ons, so the only running cost is charging electricity, and the research does not measure it. Not enough data for a yearly figure. The larger cost risk is failure rather than use: with sealed batteries and no parts program, a set that degrades late in the first year means a replacement purchase, not a repair.
When it is a good buy
The Nothing US store lists the Buds 2 directly and below their original listed price, and its own checkout page sells the same set. The research carries no numeric price thresholds, so compare those listings rather than trusting any single number, and weigh the measured ANC and battery results rather than the 48 dB headline. It is a good buy for someone who wants real ANC, long rated playback and app control at a budget price, and a poor one for someone who listens to bass-heavy material or plans to keep a pair for many years. The research also names CMF Buds, CMF Buds Pro 2, CMF Buds 2a and CMF Buds 2 Plus as separate models with different hardware, but it does not compare them, so check any of those for the same bass-forward tuning and the same sealed-battery design before switching.