Type-C USB 3.7V 4.2V 1A 5W Li-ion 18650 Lithium Battery Charger Board DC-DC Step Up Boost Module TP4056 DIY Kit

Specification:
：Working temperature - 40~80 ℃
：Input voltage range 4.2V~6.5V
：Output voltage 4.2V-28V adjustable
：Maximum power 5W
：0V activation, 2.9V trickle charging
：Up to 1A programmable linear charging current
：For single 3.7V lithium battery, fully charged with 4.2V
：Constant current/constant voltage charging, with over-temperature protection
：Soft start limit surge current, with battery reverse connection protection
：Low power standby, extended battery life
：Dual output of charging status, no battery and fault status display