Mobile Power Boost DIY 18650 Lithium Battery Digital Dual

Digital LCD Display Panel: Features an integrated backlit LCD screen displaying real-time battery charge percentage, output current, and active port connection status.

Dual USB Output Ports: Provides two USB Type-A ports (5V 1A and 5V 2.1A) to allow simultaneous charging of smartphones, tablets, or microcontrollers.

Integrated Step-Up Boost & Charger Circuit: Combines a 3.7V lithium-ion charger with a high-efficiency DC-DC boost converter, turning raw 18650 cells into a custom portable power station.

Multi-Port Charging Inputs: Equipped with Micro-USB and Type-C input connectors to recharge connected batteries using standard mobile chargers.

Comprehensive Multi-Protection IC: Onboard protection guards against cell overcharging, overdischarging, short circuits, and overcurrent conditions.

Built-in LED Flashlight Feature: Features a small built-in bright LED light for emergency lighting and field utility use.

Housing & PCB Style: High-density double-sided FR-4 glass epoxy PCB with SMD componentry and integrated digital LCD panel.

Contact & Terminal Style: Solder pads for battery connection (B+ and B-), dual USB-A female output ports, and Micro-USB/Type-C input ports.

Technical Specifications:

Input Charging Voltage: 5V DC via Micro-USB / Type-C.

Output Voltage: 5V DC.

Output Current: Dual output (5V 1A and 5V 2.1A max).

Compatible Battery Chemistry: 3.7V Nominal Lithium-Ion / Li-Po (18650 cells connected in parallel).

Color: Black PCB with silver shield connectors and backlit LCD screen.

Usage Advice: Pay strict attention to battery polarity (+ and -) when soldering to B+ and B-; connecting in reverse will permanently damage the controller IC.

Maintenance: Store in an anti-static pouch in a dry area. Keep the LCD screen and solder pads clean and free of solder flux or debris.

Essential DIY Digital Power Bank Module: Position as the ultimate solution for makers and technicians building custom multi-cell 18650 power banks, portable field chargers, or emergency battery backup systems.

Highlight Real-Time LCD Monitoring & Dual USB Output: Emphasize the clear, easy-to-read LCD screen showing percentage readout, allowing users to precisely monitor remaining battery juice.

Recommended Cross-Sell Add-ons: Pair with 2 x 18650 Lithium Battery Shield Power Expansion Board, 4 x 18650 Lithium Battery Shield Power Expansion Board, IP5328P dual USB 18650 bidirectional Fast charge Module, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Battery Charger Module collection page under digital display power boost modules.