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RTC CMOS Battery for Lenovo ThinkPad T14s Gen 3 (Type 21BR, 21BS) Galaxy S20 High-quality and reliable CMOS batteryHigh quality and reliable CMOS battery for your Lenovo ThinkPad T14s Gen 3 (Type 21BR, 21BS) Lenovo ThinkPad T14s Gen 3 (Type 21BR, 21BS) CMOS batteries are the highest quality lithium ion batteries on the market. High power ensures efficient operation and long service life of up to 10 years. Compatible with various devices like laptops, portable computers, scanners, tablets, and other industrial or consumer devices that require a backup battery.