Based on this product's specifications, here are some alternatives and similar models
Battery Black & Decker BL5018 Lithium‑Ion 18V 5Ah replacement battery, overload protection, black
Summary description:
Rechargeable Lithium‑Ion battery Black & Decker BL5018 for 18 V power tools. Capacity 5 Ah provides extended runtime for DIY and professional tasks. Includes overload protection to help prevent damage from excessive current. Compact black pack designed as a direct replacement for compatible Black & Decker tool batteries, suitable for drilling, screwing and general cordless tool use.