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

Dual USB 3.7V to 5V 2A Power Bank DIY 18650 Li-Ion Charger with Indicator LED [Blue] – by EkastoreBuild 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 2AInbuilt charging circuit with micro-USB inputLED indicator for charging/discharging statusCompact and portable design, perfect for DIY power banksOvercharge and short-circuit protection�� Applications:DIY portable power banksEmergency backup for smartphones, Arduino projects, and small electronicsPower supply for embedded and IoT projects�� Note:Battery cells are not included. Use only high-quality 18650 Li-ion batteries for safety and performance.