Battery life is one of the biggest considerations for many consumers when picking up a new Android smartphone. A longer battery life means you are less likely to spend time charging your phone in the middle of the day, despite heavy usage. Although the battery situation has improved somewhat in recent years — largely because smartphones are packing bigger batteries and have better software optimization — some Android smartphone brands continue to outperform the others on the battery front. Extensive testing by CNET has shown that Chinese smartphone maker OnePlus particularly shines in terms of battery life and easily pips the likes of Google or Samsung, two of the most popular smartphone makers. According to CNET, the company's OnePlus 15 is the Android phone with the best battery life to buy at the time of writing. However, it's not the only OnePlus phone to find a place among the top phones with the best battery life.…