After a slightly long search I found the model number for 3.7V li-ion 1/2 AAA cells @ 130mah the number is 10220
China LIC 10220 130mAh Lithium Battery. Guangzhou Manufacturer, Distributor
I am not sure if there is a supplier outside of china.
China LIC 10220 130mAh Lithium Battery. Guangzhou Manufacturer, Distributor
I am not sure if there is a supplier outside of china.