1. Introduction
The core function of the 7.4V battery pack DC charging step-down module is to convert the wide range of external input DC voltage (such as 5V-24V) to a stable charging voltage of 8.2-8.4V (suitable for fully charged lithium battery requirements), while supporting three-stage intelligent charging modes of trickling, constant current, and constant voltage, which can quickly replenish energy while avoiding overcharging damage to the battery;The module integrates overcharge, over-discharge, over-current, under-voltage, over-temperature and multiple protection functions, can monitor the charging state and battery safety in real time, and can also provide fixed low-voltage power supply of 5V through the output interface for external devices, compatible with 4-15Ah capacity 7.4V lithium batteries, widely used in children's electronic toys, portable devices, small household appliances and other scenarios, providing a safe, efficient and stable charging solution for lithium batteries.
2. Schematic
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Module Parameters
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4, Circuit Board Size
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5, Technical Parameters
Name: 7.4V Lithium Battery DC Charging Buck Module
Model: HS-P02
Installation method: screw/brick fixed
Module Size: 68mm*34mm
Hole diameter: 3.2mm Hole spacing: 28/64mm
Input voltage: 7.4V (Supports various power sources, such as AA batteries, lithium batteries, etc.)
Output voltage: stable 3.3~5V DC voltage;
Output current: If the module has a power supply output, it is common to have a fixed 5V output, the output current is usually 2.4A, the maximum can reach 3A, the charging current at the battery terminal is generally 1A, meeting the power supply needs of most small devices.
6, Test Environment Setup
Test Environment Setup
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Accessories:Pending update...
7, Video tutorial
Video tutorial:Click to view
8, Test conclusion
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