For OnePlus 6T 3.85V 3610mAh Li-ion Polymer Battery Replacement Part (Encode: BLP685) (without Logo) Wholesale | TVCMALL
New BLP685 Battery Replacement For T-Mobile OnePlus 6T A6013 Tools | eBay
Im so glad I replaced the battery on my 3+yr old Oneplus 6T. I could probably use it another 3yrs. Take it to a local shop if you dont diy : r/ oneplus