The RJD2430C1 is a rechargeable 3.7 VDC lithium-ion coin cell battery designed for wearable electronics and IoT memory backup circuits, offering a nominal capacity of 110 mAh with a minimum of 104 mAh. It features a standard charging voltage of 4.2 VDC (±0.03V) with a charging current of 55 mA at 0.5C rate and a standard discharge current of 22 mA at 0.2C rate, achieving full charge in less than 3 hours using constant current/constant voltage (CCCV) charging. The cell maintains excellent temperature performance with >95% capacity retention at 60°C and >60% at -20°C, operates reliably across -20°C to +60°C, and delivers a cycle life of 72.8 mAh after 500 cycles. With a maximum internal resistance of 4.5 mO and compact dimensions of 24.5 mm diameter by 3.25 mm thickness, the RJD2430C1 is ideal for long-life backup power in portable medical devices, smart sensors, and memory retention applications where reliability and extended shelf life are critical.