We carry nearly all accessories for the Best Technologies FE 2.1KVA BAT-0058 UPS. If you are looking for a battery or electronic accessory for the Best Technologies FE 2.1KVA BAT-0058 and cannot find it, please feel free to contact us. We are always adding new products to our site, and we would love to help you find it. We always have people, not computers, that answer the phone.