Based on this product's specifications, here are some alternatives and similar models
Battery DooGee Y7 Plus 4000mAh Li‑ion replacement for portable devices
Summary description:
Rechargeable Li‑ion battery for DooGee Y7 Plus with 4000mAh capacity. Designed as a replacement power source for the compatible DooGee Y7 Plus handset, it restores runtime for calls, apps and media. Intended for users needing battery renewal; supports standard charging procedures and offers portable backup power for everyday mobile use.