I purchased an Anker bluetooth speaker in 2015 and now, it won’t charge completely. The speaker will work for a few minutes after charging for hours. I am looking to see if I can change the rechargeable battery, what type to use and how do I access the battery (ies).
The model I have is Premium Bluetooth Speaker (https://www.anker.com/products/variant/Premium-Bluetooth-Speaker/A3143011)
Thank you for your help.