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OSCAL Tank 1: The 20000mAh Rugged Phone That Redefines Outdoor Power

The Tank 1 isn’t just another rugged phone — it’s the debut of a new OSCAL series, and the headline is a 20,000mAh ExploVolt battery that quadruples a typical flagship’s cell. OSCAL lab tests show 84 hours of calling, 23 hours of video, and a staggering 1,080 hours of standby, while the built-in 170-lumen dual LED flashlight runs 45 hours straight; 55W fast charging refuels it in about 3.7 hours, and 5W reverse charging turns the phone into a power bank. Around that endurance sits a genuinely premium spec sheet: a 6.78-inch 120Hz FHD+ main display plus a 2.01-inch rear touchscreen, a 64MP main camera joined by a 20MP infrared night vision camera and a 50MP front shooter, and a Dimensity 7050 5G chip with up to 16GB RAM and 512GB storage. Triple-certified IP68, IP69K, and MIL-STD-810H, running DokeOS 4.2 on Android 15 with three years of updates, it’s built for outdoor pros, adventure travelers, and anyone who’d rather charge once every few days.