Amazon.com: Long Lifespan Substitutable Li_ion Excellent Spare 3400mAh Battery Repair Screwdriver Tool Set Compatible with OnePlus 5 A5000 : Tools & Home Improvement
Original Back Battery Cover Rear Door Housing Case for OnePlus 3 3T With Camera Lens Repair Parts For OnePlus 3 3T back housing
OnePlus 3 Quick Tear Down For Screen DIY Repair
OnePlus 3 Battery
Oneplus 7Pro) After 3 years I finally replaced my back and battery!! Total $25. It was tough but really fun process to do. Took about 30minutes. The battery health was around 78%