The vacuum's runtime is much shorter than specified, even after a full charge.

Safety first: Allow the battery to cool before charging or testing.

• Step 1 – Service brushroll and filters: Clean the brushroll, remove hair, and clean all filters to reduce load.
• Step 2 – Compare modes: Time the runtime on low vs. high power. If both are significantly below spec, the battery is likely worn.
• Step 3 – Replace battery: Install a new genuine Dirt Devil battery pack.
• Step 4 – Usage habits: Avoid always using turbo mode for entire cleaning sessions to maximize runtime.