UPS System 18650 Power Supply Box for Networking Devices 18650 Case With Overcharge Protections Stable Output

Hard Case. Not need Welding: The 4pcs 3.7V 18650 rechargeable kit is with welding less design, which allows users to assemble it quickly without professional skills and saves time. Safe and Stable: The case supports the use of four 18650 batteries in series to ensure a stable power supply. Perfect for toys, LED lights and small electronic devices, ensuring safe and stable charging you use it. UPS System 18650 Power Supply Box for Networking Devices 18650 Case With Overcharge Protections Stable Output Features: Not need Welding: The 4pcs 3.7V 18650 rechargeable kit is with welding less design, which allows users to assemble it quickly without professional skills and saves time. Safe and Stable: The case supports the use of four 18650 batteries in series to ensure a stable power supply. Perfect for toys, LED lights and small electronic devices, ensuring safe and stable charging you use it. This rechargeable kit is compatibles most 18650 batteries on the market, both brand and capacity. T