Based on this product's specifications, here are some alternatives and similar models
Rechargeable lithium 21700 battery XTAR 21700-6000 3.6V 6000mAh, Ø 21 mm × 74.3 mm, single cell
Summary description:
Single rechargeable lithium-ion 21700 cell XTAR 21700-6000 with nominal voltage 3.6 V and capacity 6000 mAh. Dimensions: diameter 21 mm and height 74.3 mm. Designed for devices compatible with 21700 cells such as flashlights, portable power banks and some e-bikes or tools. Supplied as one cell; handle and dispose according to safety warnings to avoid contact with battery contents.