[Upgrade Version] USB Smart Charger with Over-Charge Protection and Over-Voltage Protection- 3 Pack

[Upgrade Version] USB Smart Charger with Over-Charge Protection and Over-Voltage Protection- 3 Pack

• UNIVERSAL 510 THREAD: Compatible with all 510-threaded devices, it can be connected to desktop computer, tablet, car charger and other USB ports for charging at any time. It can be used in various scenarios for your convenience.
• 100% SAFETY: With overcharge protection circuit, built-in safety circuit, intelligent IC control, even if the power supply unexpectedly short circuit will not damage the equipment.We offer a one-year after sale service, and you can contact us with any questions about the use of the products.
• PRODUCT SPECIFICATIONS:Input Voltage 5V/500mA, Output Voltage 4.2V/420mA. Height is 1.8 inches, width is 0.75 inches, thickness is 0.5 inches, very easy to carry. There are two color indicators, when your device is fully charged, the USB line indicator changes from red to green, indicating that your device is fully charged.
• BETTER HEAT DISSIPATION: Boasting high quality PCB and larger size, ensures better heat dissipation and longer life span. In this marketplace, the upgrade version 510-thread charger could be the best USB charger for all 510 threaded devices.
• PACKAGE LIST: 1* 510-Thread USB Charger Cable, 2 * Cordless USB Charger. Warm Tips: The input Voltage/Current are not allow to exceed 5V/1A, which means you can't use fast charger to power it.