If anyone is still looking. The connector on the battery is HiGo. https://www.higoconnector.com/products/z311ag-p-00-fj-1000/tv99K#title If you can find the right charger, you should be able to splice on the connector and poof Bobs your uncle.
If anyone is still looking. The connector on the battery is HiGo. https://www.higoconnector.com/products/z311ag-p-00-fj-1000/tv99K#title If you can find the right charger, you should be able to splice on the connector and poof Bobs your uncle.