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3.7V 4.2V Li Battery Charging Module, Solar Battery  Board LED Indicator Efficient Compact  for Outdoor

<ul><li>Efficient Charging: Using high efficiency MPPT control algorithm, the maximum power tracking effect is excellent, and the charging efficiency is higher</li><li>Voltage : Support 12V solar panels, voltage adjustable, and with reverse current  and overvoltage, undervoltage  function</li><li>Wide Compatibility: Built in a variety of battery types to choose from, compatible with a variety of lithium batteries, safe and reliable</li></ul>

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<p>The 3.7V 4.2V Li Battery Charging Module is a compact and efficient battery charging board designed for outdoor use. Made from durable ABS material, this module supports an input voltage of 12V and provides a nominal output voltage of 3.7V with a full stop voltage of 4.2V. It features a 2-pin PH2.0 JST interface and supports a charging current of 2A. The module operates with a PWM switching frequency of 300KHz and maintains a constant voltage charging voltage of 4.2V ± 1%. The package includes one battery charging board module and two cables, making it ready for immediate use. This module is ideal for charging lithium batteries safely and reliably.</p>

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