LIR1632 & LIR1220 Micro Rechargeable Button Battery Charger Docks & Precision Equipment Power Solutions

In miniature electronic products and high-precision instruments, LIR1632 (16mm diameter, 3.2mm thickness) and LIR1220 (12mm diameter, 2.0mm thickness) serve as essential micro rechargeable power sources.

Because of their small physical footprint and typical capacity between 10mAh and 20mAh, these miniature button cells require extreme precision control from the charger dock.

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1. Specification Overview & Comparison

LIR1632: 3.7V / 20mAh capacity. Widely used in automotive key fobs, heart rate chest straps, and digital vernier calipers.

LIR1220: 3.7V / 12mAh capacity. Frequently deployed in RTC clock backup, micro laser pointers, and compact camera sub-boards.

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2. Micro-Current Safety Engineering

VSZAPOWER has developed a stepped trickle charging algorithm specifically tailored for LIR1632 / LIR1220 micro lithium button cells: 1. 10mA Initial Pre-Charge: Protects miniature battery chemistry from high current thermal shock. 2. Dual-Color Status LED Indicators: Red for charging, solid green for 100% full cut-off. 3. USB 5V Flexible Power: Operates seamlessly from laptop USB ports, power banks, or automotive 5V adapters.