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  • $11.79
  • Free 30-day Returns
  • Ships from China.
    Sold by ThermalNest

    Shipped by ThermalNest

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    Meet Your Seller

    AJMRTC CD42 2A 5V Integrated Charge Discharge Module, 3.7V/4.2V Lithium Battery Boost Power Management Board, DIY Mobile Power Supply Charging & Discharging Protection Module for Electronic Projects

    • - CD42 all-in-one power management module, supports 3.7V/4.2V lithium battery charge & boost discharge, stable 5V@2A output for DIY mobile power builds
    • - Built-in multi-protection: overcharge, over-discharge, over-current and short-circuit protection to safeguard lithium batteries and loads
    • - Features 4-level LED battery indicator, clearly displays remaining battery capacity for convenient power status checking
    • - High conversion efficiency and ultra-low quiescent current, reduces power loss for long standby time of portable devices
    • - Compact PCB design, simple wiring, widely used for homemade power banks, small portable gadgets and electronic DIY projects
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    Overview
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    Any questions? Our AI mode will help you find out quickly.

    AJMRTC CD42 integrated charging and discharging module is a complete lithium battery power management board for single-cell 3.7V/4.2V Li-ion batteries. It combines battery charging, DC boost conversion and multiple safety protections on one tiny board, delivering steady 5V 2A output to power your USB devices.

    The module comes with 4 LED indicators to show real-time battery level. It adopts low quiescent current design to extend battery standby time. Integrated protective circuits prevent battery damage from overcharging, overdischarging, overcurrent and short circuit. This lightweight board is easy to assemble, perfect for DIY mobile power banks, portable sensors, small handheld electronics and various maker circuit projects.


    Specifications
    1. Brand: AJMRTC
    2. Model: CD42
    3. Function: Lithium Battery Charge & Discharge Boost Integrated Module
    4. Battery Compatibility: 3.7V / 4.2V single-cell lithium battery
    5. Output: DC 5V, Max 2A
    6. Indicator: 4-level LED battery capacity display
    7. Protection: Overcharge, Over-discharge, Over-current, Short-circuit Protection
    8. Application: DIY Mobile Power Bank, Portable Electronics, Electronic DIY


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