(Note: !!! 29.6V is Vacuum's battery voltage. !!! NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) Note: Rechargeable batteries typically last 1 to 3 years. If a battery is old or depleted, it may not charge, but this isn't necessarily the charger's fault. To determine if the charger is working, use a voltmeter. Compatible with listing item ASIN: B0C81Y6WVF -- Micol Cordless Vacuum Cleaner 30KPa, 6-in-1 Cordless Stick Vacuum Cleaner 60Min Max Runtime w/Strong Suction for Pet Hair Carpet Hard Floor, Wireless Vacuum Cleaner w/LED Display & Headlights Green AC Adapter Replacement For Micol MC-021 Pro MC021 MC-021Pro MC021Pro 29.6V 2600mAh Li-ion Battery 250W 30KPa 6-in-1 Lightweight Handheld Cordless Stick Vacuum Cleaner Power Supply Mains PSU