OnePlus launched the OnePlus X smartphone in India last month starting at Rs. 16999. The OnePlus Onyx version went on sale in the country last week on Amazon.in for those who have invites. We brought you the review of the smartphone recently, here we have its battery test results. The OnePlus packs a 2525mAh built-in battery, which is less than 3,100 mAh battery on the OnePlus One and 3,300 mAh battery on the OnePlus 2 smartphone. It has a 5-inch 1080p AMOLED display, is powered by a Quad-Core Snapdragon 801 processor and runs on Oxygen OS 2.1 based on Android 5.1 (Lollipop). Check out the test results below.