LG CordZero Kompressor (A925KSM): problems, parts and running costs

Checked: 2026-10-19

Summary

The LG CordZero Kompressor A925KSM is a cordless stick vacuum with two swappable batteries, a self-compacting 33.8 oz dust bin and a 10-year motor warranty. The main ownership concern is battery wear: LG states A9 batteries fade to about 80% capacity after 500 charge cycles, and replacements are a real recurring cost. At $499 (LG USA list) it is a defensible premium cordless stick, but above about $600 the value weakens.

Common problems and fixes

Batteries fade with age — LG’s July 2025 battery guidance says A9 batteries fade to about 80% capacity after 500 charge cycles; a used-unit owner on r/VacuumCleaners reports weak batteries (two bars dropping to one, Turbo shutting off). [13][15]
Dust cloud when emptying — the Kompressor lever compacts contents but emptying still throws a dust cloud. [11][12]
Noise at 84 dB — a consistent con at Best Buy. [2][12]
Poor suction reported by one owner — a Reddit owner reports chronically poor suction from the box and worsening head noise at 18 months; the post names no model code, so treat as same-family evidence. [14]
ThinQ app connectivity — some owners question the app’s usefulness; occasional connectivity complaints. [11]

Parts and consumables

Washable cyclone and filters — no routine filter purchases; wash regularly and dry fully before refitting. [1][2]
Dust bin — 33.8 oz (0.44 L); Kompressor lever compacts contents for up to 2.4x more capacity. [2]
Dual Floor Max nozzle — included in the box; features an LED light. [1][2]

Yearly running cost

There are no routine consumables beyond batteries. [2] Replacement batteries, filters and parts are sold through LG’s parts store, and owners of used units already shop for replacements — battery wear is the main long-term cost. [15][2] LG sells replacement batteries, filters and parts through its parts store for CordZero models. [2]

When it is a good buy

At $499 (LG USA list, October 2026), the A925KSM is a defensible premium cordless stick: two-battery flexibility, the Kompressor bin, washable filtration and a 10-year motor warranty. [1] At $479–$499 (Costco/LG list) it is a defensible premium cordless stick. [16] Above about $600, the unverified suction claim, battery-wear signals and missing instrumented data make alternatives with published numbers easier to justify. [11] National Appliance Warehouse had it at $581.99 on sale. [10]