This battery is the correct physical size with the wrong plug - https://www.amazon.com/dp/B09FLHR48J?psc=1&ref=ppx_yo2ov_dt_b_product_details

This is the correct plug that you can solder on - https://www.amazon.com/dp/B013JRWCBU?psc=1&ref=ppx_yo2ov_dt_b_product_details

I have been using it for about a month now.