Based on this product's specifications, here are some alternatives and similar models
Battery Datalogic RBP-GM40
Summary description:
The Datalogic RBP-GM40 is a Lithium-Ion battery with a capacity of 2100 mAh and a voltage of 3.7 V. It is compatible with Gryphon GBT4100, GBT4100-HC, GM4100, GM4100-HC, and GM4130 models. This reliable battery ensures prolonged usage of your barcode reader, providing efficient performance and durability.