Seller suggestion for KTR-003 (Small New 3DS Battery Pack) Replacement

Anyone have a good suggestion for a seller of KTR-003 battery pack for the small factor new 3ds? It could be a good “OEM” or non-Nintendo branded if necessary. This specific model is not sold at the official USA Nintendo store site.
It should be able to deliver to either to the USA or Brasil.
The console works fine, problem is that the battery is swollen and I don’t want to do any changes to make it work directly on the power supply.