"Must have receive a defective one: 40v aftermarket Ryobi battery.

Battery received within 24 hours after ordering: KUDOs to Amazon! - Regarding Product: prior to use, battery was charged on a Ryobi 40v OEM unit to full. Operating a Ryobi 40v jet fan blower, 30 minutes run time was observed which was less then an OEM battery of lesser wattage. During the use, the battery cut out intermittently-causing the blower to cut in/out of operation. Based on the inconsistent performance, battery was returned. IMHO I would stick with Ryobi batteries. Also note: for all 18v and 40v Ryobi batteries, it is recommended not to run them down completely before recharging. Doing so will cause the Ryobi chargers to go into a "safe" mode shutting off the charge to the battery.

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