MH-CD42 Battery Module Buying Guide

The MH-CD42 is a compact, high-efficiency lithium battery management module widely used in DIY electronics and mobile power applications. Based on the IP5306 SoC, it integrates charging, protection, and a 5V boost converter into a single unit Techobsessed Done.

Key Market & Product Insights

High Performance: It offers a significant upgrade over the standard TP4056, providing a 2.1A charging current and a regulated 5V output Techobsessed Hackaday.
Compact Integration: The board includes a 4-level LED "fuel gauge" and power-path management, making it ideal for compact portable power banks Techobsessed Robotics.
Market Limitations: Its "auto-off" feature triggers if the load drops below 45mA–100mA, which limits its use for low-power microcontrollers in sleep mode Hackaday Reddit.
B2B Trends: The module is highly commoditized, with wholesale prices on platforms like Alibaba ranging from $0.10 to $1.06 per unit depending on quantity and specific port configurations (e.g., Micro-USB vs. Type-C) Alibaba Alibaba.