Battery appears to charge very quickly (within minutes) and the vacuum runs only for a short time before stopping.

Safety first: Do not continue to cycle a clearly failing battery; it may overheat.

Steps to try:

• Observe charge time: A healthy Eureka cordless battery typically takes several hours to charge from empty. If it shows full in under 30 minutes, capacity is likely lost.
• Measure runtime: Fully charge the battery, then run the vacuum continuously on standard mode. If runtime is far below the specification (e.g., less than 5–10 minutes), the pack is worn out.
• Check for swelling or heat: Inspect the battery casing for bulging or hot spots. If present, discontinue use immediately.
• Replace battery: Purchase a genuine Eureka replacement battery pack compatible with your model. Avoid third-party packs that may not match the BMS logic.