2S/3S/4S Lithium Battery Charger Boost Module 1A-4A Type-C Input Boost Charging Board

2S/3S/4S Lithium Battery Charger Boost Module Product Overview
This product is a high-performance 2S/3S/4S lithium battery charger boost module that supports Type-C and DC 3-6V wide voltage input, boosting low-voltage DC power to 8.4V/12.6V/16.8V for safe and efficient charging management of multi-cell lithium battery packs. The module is available in three current versions: 1A, 2A, and 4A, with a switching frequency of up to 1MHz for excellent conversion efficiency. Featuring quasi-CV charging mode, the module integrates multiple safety mechanisms including battery overvoltage protection, auto-recharge, input undervoltage protection, and battery short-circuit protection. It is widely used in solar charging, portable devices, digital products, and various lithium battery-powered equipment charging management.

2S/3S/4S Lithium Battery Charger Boost Module Key Features
Supports 2S (8.4V), 3S (12.6V), and 4S (16.8V) lithium battery pack charging to meet diverse battery configuration needs. Available in 1A, 2A, and 4A input current versions for flexible selection based on application requirements, with the 4A version ideal for fast charging of large-capacity battery packs. Quasi-CV charging mode effectively compensates for voltage losses caused by battery internal resistance and line resistance, ensuring charging accuracy. Auto-recharge function automatically restarts charging when battery voltage drops below the set threshold, keeping batteries fully charged at all times. Integrated battery overvoltage protection prevents safety hazards caused by overcharging. Input undervoltage protection provides good adaptability to input power sources and effectively protects upstream power devices. Built-in battery short-circuit protection automatically cuts off output during output short circuits, ensuring device and personal safety. Switching frequency of up to 1MHz reduces the size of external inductors and capacitors, lowering overall solution cost. Dual LED indicators: "CR" LED indicates charging status, "OK" LED indicates full charge or constant voltage mode. Wide operating temperature range from -40℃ to +85℃ suits harsh environments. Ultra-compact module size of only 39×18×6.3mm and weight of only 5g for easy integration. Supports Type-C and DC 3-6V input, with recommended input voltage of 3.7V to 5V, compatible with common USB chargers and solar panels.

2S/3S/4S Lithium Battery Charger Boost Module Applications
This charging module is widely used in solar charging systems for charging multi-cell lithium battery packs using solar panels. Suitable for battery charging management in handheld devices such as POS terminals and portable fans. Provides battery charging solutions for consumer electronics including laptops, gaming consoles, and mobile phones. Supports various Type-C charging devices. Specifically designed for lithium battery and 18650 cell multi-cell battery pack charging. Applicable to portable multimedia devices including PDAs, MP3 players, and MP4 players. Provides battery charging management for digital cameras and audio equipment. Widely used in various Bluetooth devices and other portable equipment lithium battery charging applications.

2S/3S/4S Lithium Battery Charger Boost Module Key Advantages
All-in-one solution supporting 2S/3S/4S lithium battery pack charging, simply select the appropriate version for 8.4V, 12.6V, or 16.8V battery packs to meet diverse charging needs. Three current versions flexibly available: 1A version for standard charging of small-capacity battery packs, 2A version for fast charging of medium-capacity battery packs, and 4A version for efficient charging of large-capacity battery packs. Quasi-CV charging mode effectively compensates for voltage losses from battery internal resistance and line resistance, ensuring every cell is fully charged to extend battery life and runtime. Multiple safety protection mechanisms including battery overvoltage, input undervoltage, and battery short-circuit protection comprehensively ensure safe and reliable charging. Type-C + DC dual-input design with strong compatibility, supporting common Type-C chargers as well as DC 3-6V power supplies or solar panels for broad application scenarios. High 1MHz switching frequency allows for smaller inductors and capacitors, significantly reducing overall solution footprint for space-constrained portable device designs. Dual LED indicators provide intuitive charging status and full charge status display, allowing users to easily monitor the charging process. Ultra-compact size of 39×18×6.3mm and weight of only 5g enables easy integration into various portable devices and handheld products.

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