Based on this product's specifications, here are some alternatives and similar models
Battery Maxximus for Lenovo K5 / C2 / K5+ 2250 mAh BL259 - Maxximus
Summary description:
Replacement smartphone battery Maxximus compatible with Lenovo K5, K5 Plus and C2, model BL259, nominal capacity 2250 mAh. Designed to restore portable power for devices using the original BL259 cell form factor and contacts. Suitable for daily use, device repairs, and maintaining runtime for calls, browsing and apps.