Key Features:

✔ Dual USB Outputs – 5V 2.1A (max) for fast charging + 5V 1A for smaller devices. ✔ Integrated Protection –

• Overcharge, over-discharge, and short-circuit protection.

• Auto-cutoff when battery voltage is too low (<3V). ✔ Boost Converter – Efficiently steps up 3.7V (Li-ion/LiPo) to 5V. ✔ LED Power Indicators – Shows charging status and battery level. ✔ Micro USB Input – 5V/2A charging for the internal battery. ✔ Compact Design – Fits in DIY enclosures or existing power bank cases.

Applications:

• DIY Power Banks – Turn 18650/26650 batteries into portable chargers.

• Emergency Phone Charger – Backup power for outdoor trips.

• Solar Chargers – Store solar energy in Li-ion batteries.

• IoT Devices – Portable power for Raspberry Pi Zero/Arduino.

Wiring Guide:

1. Battery Input (B+/B-) → Connect to 3.7V Li-ion/LiPo cell(s).

2. Micro USB Input → Plug in 5V/2A charger to recharge the battery.

3. USB Outputs → Charge phones, tablets, or gadgets.

Technical Specifications:

• Input (Battery): 3V–4.2V (single-cell Li-ion/LiPo).

• Output (USB): 5V ±0.2V, 2.1A max total (shared across ports).

• Charging Current: 1A (standard) / 2A (fast charge, if supported).

• Efficiency: Up to 92% (DC-DC boost).

• Dimensions: ~50mm × 25mm.

Package Includes:

• 1x 5V 2A Power Bank Charger Module.

Why Choose This Module?

✅ Plug-and-Play – No coding or complex wiring. ✅ Safe & Reliable – Built-in protections prevent battery damage. ✅ Cost-Effective – Cheaper than buying a pre-made power bank.