Just three months after introducing the Xiaomi 17 series of phones, Xiaomi is back with the Xiaomi 17T Pro. The company has had a somewhat odd release schedule for its smartphones lately, often cramming launches into short periods of time, but that won't matter much to the average consumer, who'll just want to know which of the new Xiaomi phones is the best buy right now. Having spent a few days with the Xiaomi 17T Pro, I can say that it's a very strong contender. It doesn't have the most powerful chip or cameras; those honors belong to the over-the-top Xiaomi 17 Ultra , and the "regular" Xiaomi 17 which we saw during the Mobile World Congress in Barcelona in March this year. The first time a Xiaomi T-series phone has gotten a 5x telephoto lens. Credit: Stan Schroeder / Mashable But the Xiaomi 17T Pro wins on battery life. With a humongous, 7,000mAh silicon-carbon battery, it stands on top of Xiaomi's smartphone lineup, and a lot of potential buyers will take notice.…