New rechargeable power unit

My name is Greg McCombs and I am raising funds to replace the charging unit for the disabled scooter I purchased with GoFundMe nearly 6 years ago. It takes two rechargeable batteries at a cost of 500€ plus added installation costs at the garage for medical devices (OrthoSanity) in Acquaviva. I am a diabetic with neuropathy (lack of feeling) in my legs, have severe arthritis, and damaged and missing cartelage in my knees so I need the scooter to get around. I will download the funds to my bank account in order to pay OrthoSanity for the batteries and installation.