Adjustable Step Up 18650 Li-ion Battery Charger & Discharge HW-357 3.7V 9V 5V

HW-357 Adjustable Step-Up Module – 18650 Li-ion Battery Charger & Discharge

Features:

• Micro USB Input Terminal With A Female, Can Be Directly Input To Do With The Phone Charger Rechargeable Lithium Battery, And Still Retains The Input Voltage Wiring Pads, Can Be Very Convenient DIY
• It Can Be Used For Voltage 3.6 3.7V, Etc. 18650, Polymer And Other Lithium Battery Charge And Discharge Protection
• It Support Charge Discharge Over Current Protection
• It Supports Simultaneous Charging And Discharging
• Charge Cutoff Voltage: DC 4.2V±1%
• Charging Mode: Linear Charge
• Working Environment Temperature: -20-85 Degrees Celsius
• For Example: VIN+ Port Input 5V Solar Panels, BAT+ Port Can Output 4.2V To Charge 3.7V 18650
• Battery Note: The OUT+ Port Can Output An Adjustable Voltage

Specifications:

• Input Voltage: 4.5-8V
• Output Voltage: Continuous Adjustable 4.3-27V (Counter Clockwise To Boost Voltage)
• Charging Voltage: 4.2V
• Charging Current: Up To 1A
• Discharge Current: The Maximum 2A
• Output Reference Maximum Current: 5V 1.4A, 9V 0.8A, 12V 0.6A
• Quiescent Current: About 0.5 MA
• Overshoot Protection: Yes
• Over Discharge Protection: None (Also Can Be Said Yes, Because 2V Cut-Off Boost But Does Not Block The Output, Output Has 2V)
• Deadline Boost:: 2V, Depending On Whether Added The Additional Protection Board
• Size: 3.3 X 2.3 X 0.5cm
• Connecting Example, VIN + Connect 5V Solar Panel, BAT + Terminal Can Output 4.2V To Charging 3.7V 18650 Battery, OUT + Side Can Output An Adjustable Voltage
• Can Be Used For Multimeter, Modified Lithium Battery Charging

Connections:

• VIN+ Connect 5V Solar Panel
• BAT+ Terminal Can Output 4.2V To Charging 3.7V 18650 Battery
• OUT+ Side Can Output An Adjustable Voltage

Applications:

• Portable Power Banks: Provides a compact solution for creating custom power banks using 18650 Li-ion batteries.​
• Battery-Powered Projects: Supplies adjustable voltage to various electronics projects requiring portable power.​
• DIY Electronics: Ideal for hobbyists and makers building battery-operated devices with specific voltage needs.