Hi Zed, the BLP829 battery won't fit in a model LE2117 for T-mobile in the US. You can use the Oppo BLP821 battery which has the same voltage and capacity as the BLP829. I hope this answer can help you.

Hi, the BLP829 battery will not fit in a model LE2117 for T-Mobile in the US. You may need to find a different battery model that is compatible with your device. You can use the Oppo BLP821 battery2, which has the same voltage and capacity as the BLP829 battery, but you should check the dimensions and connector type before buying it. Alternatively, you can contact OnePlus customer service and ask them for a recommendation or a replacement service.