TP5100 1S/2S Lithium Battery Charging Module (2A)

Description

The TP5100 1S/2S Lithium Battery Charging Module is a high-performance, switch-mode battery charger designed to safely and efficiently charge either single-cell (1S - 4.2V) or dual-cell (2S - 8.4V) lithium-ion and lithium-polymer batteries. Unlike traditional linear chargers that generate excess heat, the TP5100 utilizes a 400kHz switching buck topology, allowing it to deliver up to 2A of charge current while remaining incredibly cool and energy-efficient.

Available at Tomson Electronics, this module is a massive upgrade over the standard TP4056 for high-capacity applications. It features a wide input voltage range of 5V to 18V, making it highly versatile for use with various power supplies, solar panels, and DC adapters. By default, the module charges 1S batteries at 4.2V, but it can be easily configured to charge 2S battery packs at 8.4V simply by bridging a single solder pad on the board.

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Specifications

• Main IC: TP5100
• Input Voltage Range: 5V to 18V DC
• Output Voltage: 4.2V (1S - Default) or 8.4V (2S - Configurable)
• Maximum Charge Current: 2A
• Switching Frequency: 400kHz
• Protection Features: Over-current, over-temperature, and battery reverse polarity protection
• Status Indicators: Dual-color LED (Red = Charging, Blue/Green = Fully Charged/Standby)

Applications

• High-Capacity Power Banks: Rapidly charging large single-cell lithium arrays where 1A chargers are too slow.
• Robotics & RC Vehicles: Creating built-in charging circuits for 7.4V (2S) battery packs used in motors and servos.
• Portable Audio: Powering and charging custom Bluetooth speakers utilizing 2S battery configurations for higher amplifier voltage.
• Solar Charging: Harnessing 12V solar panels to efficiently step down and charge lithium batteries in remote IoT nodes.

Frequently Asked Questions (FAQ)

Q: How do I change it from 1S (4.2V) to 2S (8.4V) mode?
A: On the top of the module, there is a small pair of solder pads labeled "SET". By default, these pads are disconnected, and the module outputs 4.2V for a 1S battery. To switch to 8.4V for a 2S battery, simply use a soldering iron to bridge (connect) the two "SET" pads together with a blob of solder.

Q: Is TP5100 better than the TP4056 module?
A: Yes, for higher power applications. The TP4056 is a linear charger maxing out at 1A, which means it burns off excess voltage as heat. The TP5100 is a switching charger, meaning it efficiently steps down the voltage, generates far less heat, supports up to 2A, and has the added benefit of supporting 2S batteries.

Q: Does this module protect the battery from over-discharging?
A: No. The TP5100 is strictly a battery charger. It does not feature built-in low-voltage disconnect (over-discharge) protection for the load. You will still need a separate BMS (Battery Management System) attached to your battery pack to protect it during use.

Package Includes

• 1 × TP5100 1S/2S Lithium Battery Charging Module (2A)