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5V Step-Up Power Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P

5V Step-Up Power Module Lithium Battery Charging Protection Board USB For DIY Charger 134N3P

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SpecificationDetails
Input Voltage3.7V to 5.5V DC
Charging Current1A (Max)
Output Voltage5V DC
Output Current1A (Max)
Battery Discharge Stop2.9V
Charging Efficiency85%
Standby Current8uA
Price
₹ 29.66 ₹ 29.66
(Tax included)

Product Description

The 134N3P Module is a highly integrated Power Management IC (PMIC) solution. It features a Micro-USB port for charging the connected lithium battery and a USB Type-A port for discharging power to external devices. The board includes a status LED that indicates the charging state (typically red for charging and green/blue for fully charged). Its internal protection logic prevents the battery from overcharging, over-discharging, and short-circuiting, making it a safe choice for beginner-level power projects.

Key Features

  • Triple Functionality: Combines charging, boosting, and protection on one miniature PCB, reducing the need for multiple separate modules.

  • Smart Charging: Automatically manages the charging cycle for 3.7V lithium batteries, ensuring long-term battery health.

  • Automatic Load Detection: The module intelligently wakes up when a device is plugged into the USB-A port and enters a low-power standby mode when no load is detected.

  • Integrated Protection: Safeguards your battery against discharging below 2.9V, which is critical for preventing permanent damage to Li-ion cells.

  • Compact DIY Design: Its small size makes it easy to fit into 3D-printed enclosures for custom portable chargers or "Jugaad" power banks.

Technical Details

  • Dimensions: Approx. 20mm x 18mm.

  • Indicator: Dual-color LED status.

  • Battery Compatibility: 3.7V Li-ion (18650) or Li-Polymer batteries.

Prototyping and Engineering Tips from Robogears

  • Polarity is Permanent: Be extremely careful when connecting your battery to the B+ and B- pads. This module does not have reverse polarity protection; swapping the positive and negative wires will instantly burn the 134N3P chip.

  • Heatsink for Continuous Use: While rated for 1A, the chip can get quite warm during extended charging or heavy 5V boosting. If you plan to draw 1A continuously, ensure there is adequate airflow or a small thermal pad in your enclosure.

  • The "Standby" Feature: If your project draws a very low amount of current (less than 50mA), the module might "think" there is no load and shut down the 5V output to save power. For low-power IoT sensors, you may need a TP4056 module paired with a separate boost converter instead.

  • Battery Capacity: This module works best with battery capacities between 1000mAh and 5000mAh. Larger batteries will work but will take a significantly long time to charge at the 1A rate.

Package Includes

  • 1 x 5V Step-Up Power Module (134N3P)

Disclaimer

Use only with 3.7V/4.2V Lithium batteries. Never connect this module to AA, Ni-Cd, or Lead-Acid batteries, as the charging parameters are incompatible and could lead to a fire hazard.