Battery: Power Tool/Mower (24-48v) (Bellevue EH7)

Hello, I'd like to find an unwanted power tool or lawnmower battery to repair an electric scooter. If anyone has a working 24volt (36v/48v) one and charger, it would be put to good use. Some batteries can be a bit dangerous if they've been left uncharged a while so, I'm looking for one that has been used fairly recently.
Can you help with this request?
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