Here’s the battery I purchased for my headphones. You will need to cut and solder the wires together. I used heat shrink tubing to cover the wires where I soldered. You can use electrical tape if that’s all you have. The benefit of using this battery is it’s almost twice the capacity of the original, yet small enough to fit. I also purchased some gorilla glue hot glue gun sticks. That battery is not going anywhere!!
Happy to help a fellow audiophile. If you like these you have a good ear.
AKZYTUE 3.7V 700mAh 603035 Lipo... https://www.amazon.com/dp/B07TS8N25G?ref=ppx_pop_mob_ap_share
Without a doubt, these...
Atlantic Adjustable Height Speaker Stands Black - Set of 2 Holds Satellite Speakers, Adjustable Stand Height from 27 to 48 inch, Heavy Duty Powder Coated Aluminum with Wire Management PN77305018 https://smile.amazon.com/dp/B000289DC6/ref=cm_sw_r_cp_api_glc_fabc_Sk88Fb06NBYVA
I got these on Amazon. They work.
PERLESMITH Adjustable Height Speaker Stands-Extend 31-48 Inch-Hold Small Satellite Bookshelf & Bluetooth Speakers Weight up to 6lbs(i.e. Bose, Polk, JBL, Sony, Samsung, and Klipsch) -1 Pair (PSSS3) https://www.amazon.com/dp/B07VMQW7MT/ref=cm_sw_r_cp_api_glc_fabc_ar3-Fb03KKPMK?_encoding=UTF8&psc=1
They only provide some mounting brackets. I recommend these speaker stands, it's the ones I'm using right now.
https://www.amazon.com/dp/B000289DC6/ref=cm_sw_r_cp_apa_i_SweKFbGZP4M49?_encoding=UTF8&psc=1