Dual USB 3.7v to 5V 2A Power Bank DIY 18650 Li-Ion Charger with Indicator Led [Blue]

Dual USB 3.7V to 5V 2A Power Bank DIY 18650 Li-Ion Charger with Indicator LED [Blue] – by Ekastore

Build your own power bank with this DIY Dual USB 18650 Li-Ion Charger Module. Designed for hobbyists, makers, and tinkerers, this board allows you to charge and discharge 18650 lithium-ion cells safely while powering your devices.

🔹 Key Features:

• Input: 3.7V (1x 18650 Li-ion battery – not included)

• Output: Dual USB ports, 5V up to 2A

• Inbuilt charging circuit with micro-USB input

• LED indicator for charging/discharging status

• Compact and portable design, perfect for DIY power banks

• Overcharge and short-circuit protection

🔹 Applications:

• DIY portable power banks

• Emergency backup for smartphones, Arduino projects, and small electronics

• Power supply for embedded and IoT projects

🔹 Note:
Battery cells are not included. Use only high-quality 18650 Li-ion batteries for safety and performance.