The 573442P is a premium lithium polymer battery, featuring a nominal 3.7V voltage (4.2V full charge), 800mAh capacity, and 2.96Wh energy output. Engineered with advanced lithium polymer chemistry and a slim prismatic form factor (5.9*33.5*44.8 mm), it merges ultra-thin flexibility, stable performance, and lightweight design—making it the ideal power source for wireless earbud charging cases, mini smartwatches, portable Bluetooth speakers, IoT sensors, and other compact consumer electronics that demand space-saving power without compromising runtime.