Xiaomi India — Phone Spare Battery Unavailable POCO F1

POCO F1 was launched in India by Xiaomi in second half of 2018 And i had purchased the same on 29/10/2018 Now my phone is working perfectly fine but seeing huge drop in usability as battery has degraded . When visited service centre in Malad West was informed that company has stopped producing spares for a phone they were selling like 2 years back also they advised me to go for secondary market china options, however these china battery are not regulated and always risk of incident and not giving optimum experience . Request the company to provide adequate spare battery for my POCO F1.