5V 1A Mini USB TP4056 Lithium Battery Charger

1A Linear Charging Control: Powered by the proven TP4056 IC to deliver a stable, regulated 1A charging current using a Constant Current / Constant Voltage (CC/CV) charging profile.

Mini USB Input Port: Features a classic Mini USB connector for power input alongside direct solder input pads (IN+ and IN-), allowing connection to legacy power supplies or custom external DC sources.

Integrated Protection Architecture: Onboard DW01 protection IC and 8205A dual MOSFET switch guard against overcharging (4.2V cut-off), overdischarging (2.5V cut-off), overcurrent, and output short circuits.

Real-Time LED Status Indicators: Dual onboard surface-mount LEDs provide clear charging feedback (red LED active during charge, blue/green LED when fully charged or on standby).

Compact Breakout Board Design: Ultra-small PCB footprint enables seamless integration into tight enclosures, retro handheld console mods, and portable electronics.

Automatic Re-Charge Cycle: Maintains optimal cell readiness by automatically terminating at full charge (4.2V) and topping up if cell voltage drops below 4.05V.

Housing & PCB Style: High-density FR-4 glass epoxy PCB with SMD circuitry and onboard status LEDs.

Contact & Terminal Style: Nickel-plated solder pads for BAT+, BAT-, OUT+, OUT-, IN+, IN-, and an onboard female Mini USB receptacle.

Technical Specifications:

Input Voltage: $4.5\text{V}\text{–}5.5\text{V}$ DC (via Mini USB or input solder pads).

Full Charge Cut-Off Voltage: $4.2\text{V} \pm 1.5\%$.

Max Output Charge Current: $1\text{A}$ (Programmable via RPROG resistor).

Overdischarge Cut-Off Voltage: $2.5\text{V}$.

Weight: $0.05\text{ kg}$.

Color: Blue PCB with white component silkscreen.

Usage Advice: Pay strict attention to battery polarity when soldering to BAT+ and BAT-; connecting in reverse can permanently damage the TP4056 controller IC.

Maintenance: Store in an anti-static bag in a dry, room-temperature environment when not installed in an active module.

Essential Modular Power Charger: Position as an indispensable charging breakout module for DIY power banks, legacy USB device revamps, custom ESP32/Arduino mobile nodes, and portable 18650 projects.

Highlight Integrated Protection & Legacy USB Support: Emphasize the onboard battery protection circuitry and Mini USB interface, making it an ideal choice for specific field equipment and retro fitting projects.

Recommended Cross-Sell Add-ons: Pair with 5V 1A 18650 TP4056 Lithium Battery Charger, TP4056 1A lithium charging module Type-C, 2 x 18650 Lithium Battery Shield Power Expansion Board, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Staple: Display prominently on your Battery Charger Module collection page under single-cell 1S charger options.