OnePlus 3 review: Third time's the charm, but only if you can overlook the battery life- Tech Reviews, Firstpost
DXOMARK on Twitter: "The @OnePlus 9 Pro's #battery performance was below average in terms of autonomy and efficiency; however, it comes with a fast charger and offers a very good charging experience.
OnePlus 7 Pro Review: Battery life | Trusted Reviews
Review: OnePlus 3 battery life is surprisingly pretty damn amazing – Phandroid
OnePlus 3 Battery Life Test
OnePlus 3 review: King of the budget phones, but no heir to the flagship throne