TP5100 4.2V/8.4V Li-ion Battery Charging Module

Switch-Mode Synchronous Charging (2A Max): Powered by the high-efficiency TP5100 switch-mode buck charging IC, delivering up to 2A continuous charge current with low heat generation compared to linear chargers.

Dual-Cell (1S/2S) Configurable Output: Easily selectable between single-cell (4.2V) and dual-cell (8.4V) lithium-ion/Li-Po battery charging by bridging or opening the onboard SET solder pads.

Wide Input Voltage Range: Accepts DC input supply voltages from 5V up to 18V DC, accommodating a broad selection of power adapters, solar panels, and bench supplies.

Integrated Protection Circuitry: Onboard protection includes input overvoltage protection, undervoltage lockout, battery temperature monitoring (NTC interface), and short-circuit protection.

Dual LED Status Indicators: Onboard status LEDs provide instant feedback for active charging and charge-complete states.

Compact Buck Regulator Design: Heavy-duty power inductor and high-frequency switching architecture fit into an ultra-compact footprint suitable for space-constrained electronics.

Housing & PCB Style: High-density double-sided FR-4 glass epoxy PCB with SMD circuitry and high-power toroidal/SMD inductor.

Contact & Terminal Style: Gold/nickel-plated solder pads for power input (VIN+, VIN-), battery terminals (BAT+, BAT-), and external NTC sensor.

Technical Specifications:

Input Voltage: 5V – 18V DC (Input voltage must exceed target battery voltage by at least 1V).

Charging Voltage: 4.2V (1S mode default) or 8.4V (2S mode with SET jumper bridged).

Max Output Charge Current: Up to 2A max (Programmable via sensing resistors).

Switching Frequency: Approx. 400kHz.

Color: Green PCB with silver/black surface-mount components.

Usage Advice: When configuring for 2S 8.4V charging mode, ensure your DC input supply is at least 9V – 12V. Double-check battery polarity before applying power.

Maintenance: Keep board contacts clean and free of flux residue. Store in anti-static packaging when not in active use.

Essential Multi-Cell Lithium Charging Workhorse: Position as the ultimate step-up choice over basic TP4056 modules for applications requiring 2S 8.4V battery configurations or higher 2A charging speed.

Highlight High-Efficiency Buck Architecture: Emphasize the switch-mode buck design that operates cooler and handles higher input voltages (5V – 18V) without overheating.

Recommended Cross-Sell Add-ons: Pair with TP5410 5V 1A LiPo Charger & Boost Converter, TP4056 1A lithium charging module Type-C, Lipo Battery USB Converter XT60, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Battery Charger Module collection page under dual-cell synchronous charging modules.