EC Buying 5Pcs 5V Charge & Discharge Module 3.7V/4.2V 18650 Lithium Battery Charger Power Bank USB Type-C with Protection

["Efficient 5V Charge and Discharge Integrated Module for 3.7V/4.2V 18650 lithium batteries, ensuring full 4.2V charge with programmable linear charging current up to 1A, perfect for DIY projects and portable devices","Advanced Protection Features in this 5V charge and discharge integrated module, including over-temperature protection, soft start, and battery reverse protection, safeguarding your 3.7V/4.2V 18650 lithium batteries","Dual Output Indicators on the 5V charge and discharge integrated module provide real-time status updates for charging, no battery, and fault conditions, making it easy to monitor your 3.7V/4.2V 18650 lithium battery's health","Low Power Standby Mode in the 5V charge and discharge integrated module extends the life of your 3.7V/4.2V 18650 lithium batteries by minimizing power consumption when not in use, ideal for long-term storage and energy efficiency","Wide Operating Temperature Range (-40°C to 80°C) and input voltage range (4.2V to 6.5V) make this 5V charge and discharge integrated module versatile for various environments, ensuring reliable performance for 3.7V/4.2V 18650 lithium batteries"]